{"id":218,"date":"2026-07-24T07:31:08","date_gmt":"2026-07-24T07:31:08","guid":{"rendered":"https:\/\/5speedtransmission.com\/?post_type=product&#038;p=218"},"modified":"2026-07-24T07:31:08","modified_gmt":"2026-07-24T07:31:08","slug":"anti-backbend-chains-for-pushing-window","status":"publish","type":"product","link":"https:\/\/5speedtransmission.com\/fr\/produit\/anti-backbend-chains-for-pushing-window\/","title":{"rendered":"Cha\u00eenes anti-retournement pour pousser une fen\u00eatre"},"content":{"rendered":"<div style=\"font-family: Arial, Helvetica, sans-serif; color: #1c2333; line-height: 1.75; max-width: 1200px; margin: 0 auto; padding: 2%;\">\n<div style=\"background: #0d1b2e; border-radius: 8px; padding: 28px 4%; margin-bottom: 40px; display: flex; flex-wrap: wrap; gap: 0; justify-content: space-around; text-align: center;\">\n<div style=\"padding: 10px 20px; min-width: 130px;\">\n<p style=\"font-size: clamp(22px,3vw,34px); font-weight: 800; color: #e8a020; margin: 0 0 4px;\">9 mod\u00e8les<\/p>\n<p style=\"font-size: clamp(11px,1.2vw,13px); color: #8daabe; text-transform: uppercase; letter-spacing: 1.5px; margin: 0;\">06BF \/ 08BF \/ 415BF \/ 16AF<\/p>\n<\/div>\n<div style=\"padding: 10px 20px; min-width: 130px; border-left: 1px solid rgba(255,255,255,0.08);\">\n<p style=\"font-size: clamp(22px,3vw,34px); font-weight: 800; color: #e8a020; margin: 0 0 4px;\">9,525 \u00e0 25,4 mm<\/p>\n<p style=\"font-size: clamp(11px,1.2vw,13px); color: #8daabe; text-transform: uppercase; letter-spacing: 1.5px; margin: 0;\">Gamme de hauteur<\/p>\n<\/div>\n<div style=\"padding: 10px 20px; min-width: 130px; border-left: 1px solid rgba(255,255,255,0.08);\">\n<p style=\"font-size: clamp(22px,3vw,34px); font-weight: 800; color: #e8a020; margin: 0 0 4px;\">Pousser et r\u00e9tracter<\/p>\n<p style=\"font-size: clamp(11px,1.2vw,13px); color: #8daabe; text-transform: uppercase; letter-spacing: 1.5px; margin: 0;\">Pouss\u00e9e rigide \/ traction flexible<\/p>\n<\/div>\n<div style=\"padding: 10px 20px; min-width: 130px; border-left: 1px solid rgba(255,255,255,0.08);\">\n<p style=\"font-size: clamp(22px,3vw,34px); font-weight: 800; color: #e8a020; margin: 0 0 4px;\">ISO 9001<\/p>\n<p style=\"font-size: clamp(11px,1.2vw,13px); color: #8daabe; text-transform: uppercase; letter-spacing: 1.5px; margin: 0;\">Qualit\u00e9 certifi\u00e9e<\/p>\n<\/div>\n<\/div>\n<h2 style=\"color: #0d1b2e; font-size: clamp(20px,2.6vw,28px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 0;\">Anti-Backbend Push Chain &#8211; Product Overview<\/h2>\n<div style=\"display: flex; flex-wrap: wrap; gap: 28px; margin: 24px 0 36px;\">\n<div style=\"flex: 2 1 320px;\">\n<p style=\"font-size: clamp(14px,1.6vw,16px);\">Toujours-Puissance <a style=\"color: #1a6db5; text-decoration: underline;\" href=\"https:\/\/5speedtransmission.com\/fr\/categorie-produit\/driving-chains\/\">Cha\u00eenes anti-retournement pour pousser la fen\u00eatre<\/a> are a specialised family of roller chains designed to transmit both push and pull forces along the chain axis without buckling. A conventional roller chain is fully flexible in both directions &#8211; it can be pulled under tension but will buckle immediately if a compressive (push) force is applied. An anti-backbend chain is engineered with extended outer link plates and an interlocking plate geometry that prevents the chain from bending backward beyond the straight position, effectively turning the chain into a rigid push rod when loaded in compression while retaining normal articulation in the pulling direction.<\/p>\n<p style=\"font-size: clamp(14px,1.6vw,16px);\">The anti-backbend function is achieved through the plate geometry. The outer link plates in the EP push chain range are formed with a stepped or extended profile that bears against the adjacent inner link plates when the chain is in the straight (tensioned or compressed) configuration. This contact between plates prevents back-articulation &#8211; the chain cannot bend in the direction that would be compressive buckling. As the chain is fed out from the sprocket in the push direction, the interlocked plates form a rigid column capable of transmitting the compressive load through the chain length to the driven component. When the chain is retracted, the plates separate and the chain becomes fully flexible again, allowing it to coil or store in a compact magazine behind the sprocket.<\/p>\n<p style=\"font-size: clamp(14px,1.6vw,16px);\">The primary application of EP anti-backbend push chains is in window actuator systems &#8211; automatic openers for roof lights, skylights, clerestory windows, industrial ventilation louvres, smoke control ventilators, and architectural glazing systems. In these applications, the window actuator motor drives a sprocket that feeds the chain out through a guide tube to push the window open, then retracts the chain to pull the window closed. The chain must be rigid enough in the push direction to push the window open against its own weight, wind pressure, and any sealing resistance, while flexible enough in the pull direction to store compactly in the actuator housing.<\/p>\n<p style=\"font-size: clamp(14px,1.6vw,16px);\">The EP range covers nine models from EP-06BF34 at 9.525 mm pitch through EP-16AF101 at 25.400 mm pitch. Models marked with an asterisk (*) are bush chains &#8211; the d1 dimension in the specification table is the external diameter of the bush rather than an outer roller. The H and h dimensions in the specification table describe the outer link plate profile: H is the overall plate height (including the anti-backbend extension plate) and h is the standard plate depth within the chain height, both of which affect the guide tube or channel dimensions required to support the chain in service.<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<div style=\"flex: 1 1 260px;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-212\" src=\"https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/Anti-backbend-chains-for-pushing-window-1.webp\" alt=\"Cha\u00eenes anti-flexion pour pousser la fen\u00eatre 1\" width=\"600\" height=\"600\" srcset=\"https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/Anti-backbend-chains-for-pushing-window-1.webp 600w, https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/Anti-backbend-chains-for-pushing-window-1-480x480.webp 480w\" sizes=\"auto, (min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 600px, 100vw\" \/><\/p>\n<\/div>\n<\/div>\n<div style=\"background: #f4f7fb; border-radius: 8px; padding: 20px 4%; margin-bottom: 36px;\">\n<p style=\"font-size: clamp(12px,1.4vw,14px); color: #475569; margin: 0;\"><strong>L\u00e9gende des dimensions\u00a0:<\/strong> P = Pas (mm) | d1 max = Diam\u00e8tre max. du rouleau (cha\u00eene \u00e0 douilles : diam\u00e8tre ext\u00e9rieur de la douille) | b1 min = Largeur int\u00e9rieure min. entre les plaques | d2 max = Diam\u00e8tre max. de l'axe | L max = Longueur max. de l'axe | H max = Hauteur totale max. de la plaque (profil de la plaque anti-retournement ext\u00e9rieure) | h max = Profondeur max. standard de la plaque | t\/T max = \u00c9paisseur max. des plaques int\u00e9rieure\/ext\u00e9rieure | Q min = R\u00e9sistance \u00e0 la traction min. kN\/lbf | q = Poids kg\/m | * = Cha\u00eene \u00e0 douilles (d1 est le diam\u00e8tre ext\u00e9rieur de la douille)<\/p>\n<\/div>\n<p><img decoding=\"async\" style=\"width: 100%; height: auto; border-radius: 6px; box-shadow: 0 3px 12px rgba(13,27,46,0.15); display: block; margin-bottom: 16px;\" title=\"Gamme de produits de cha\u00eenes anti-retour EP\" src=\"https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/types-of-chain-1.webp\" alt=\"Cha\u00eene de pouss\u00e9e anti-retour Ever-Power pour actionneur de fen\u00eatre s\u00e9rie EP-06BF EP-08BF\" \/><\/p>\n<h2 style=\"color: #0d1b2e; font-size: clamp(20px,2.6vw,28px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 0;\">Sp\u00e9cifications de la cha\u00eene de pouss\u00e9e anti-retour<\/h2>\n<p style=\"font-size: clamp(13px,1.5vw,15px); color: #475569; margin-bottom: 16px;\">Toutes les dimensions sont en mm. Les mod\u00e8les marqu\u00e9s d'un ast\u00e9risque (*) sont des cha\u00eenes \u00e0 douilles. Q min = r\u00e9sistance \u00e0 la traction minimale\u00a0; q = poids par m\u00e8tre. H et h correspondent aux dimensions des plaques indiqu\u00e9es sur le sch\u00e9ma technique (H = hauteur totale de la plaque, h = profondeur int\u00e9rieure de la plaque).<\/p>\n<div style=\"overflow-x: auto; width: 100%; margin: 0 0 40px;\">\n<table style=\"width: 100%; border-collapse: collapse; font-size: clamp(11px,1.3vw,13px); min-width: 900px;\">\n<thead>\n<tr style=\"background: #0d1b2e; color: #ffffff;\">\n<th style=\"padding: 10px 9px; text-align: center; border: 1px solid #0d1b2e; white-space: nowrap;\">Mod\u00e8le EP<\/th>\n<th style=\"padding: 10px 9px; text-align: center; border: 1px solid #0d1b2e; white-space: nowrap;\">P (mm)<\/th>\n<th style=\"padding: 10px 9px; text-align: center; border: 1px solid #0d1b2e; white-space: nowrap;\">d1 max (mm)<\/th>\n<th style=\"padding: 10px 9px; text-align: center; border: 1px solid #0d1b2e; white-space: nowrap;\">b1 min (mm)<\/th>\n<th style=\"padding: 10px 9px; text-align: center; border: 1px solid #0d1b2e; white-space: nowrap;\">d2 max (mm)<\/th>\n<th style=\"padding: 10px 9px; text-align: center; border: 1px solid #0d1b2e; white-space: nowrap;\">L max (mm)<\/th>\n<th style=\"padding: 10px 9px; text-align: center; border: 1px solid #0d1b2e; white-space: nowrap;\">H max (mm)<\/th>\n<th style=\"padding: 10px 9px; text-align: center; border: 1px solid #0d1b2e; white-space: nowrap;\">h max (mm)<\/th>\n<th style=\"padding: 10px 9px; text-align: center; border: 1px solid #0d1b2e; white-space: nowrap;\">t\/T max (mm)<\/th>\n<th style=\"padding: 10px 9px; text-align: center; border: 1px solid #0d1b2e; white-space: nowrap;\">Q min (kN\/lbf)<\/th>\n<th style=\"padding: 10px 9px; text-align: center; border: 1px solid #0d1b2e; white-space: nowrap;\">q (kg\/m)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center; font-weight: bold;\">EP-06BF34<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">9.525<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">6.35<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">3.80<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">3.28<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">10.00<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">12.38<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">7.88<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">1.04<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">7.0\/1574<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">0.47<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center; font-weight: bold;\">EP-*06CF22<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">9.525<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">5.08<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">4.77<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">3.58<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">11.60<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">12.86<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">8.38<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">1.30<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">7.9\/1776<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">0.51<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center; font-weight: bold;\">EP-*06CF30<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">9.525<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">5.08<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">4.77<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">3.58<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">13.90<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">13.05<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">8.55<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">2.03\/1.25<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">7.9\/1776<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">0.71<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center; font-weight: bold;\">EP-*P9.525F1<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">9.525<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">5.08<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">4.77<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">3.58<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">11.60<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">13.00<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">8.55<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">1.30<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">7.9\/1776<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">0.57<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center; font-weight: bold;\">EP-08BF6<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">12.700<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">7.95<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">7.85<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">3.96<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">16.60<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">17.00<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">11.00<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">1.50<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">13.8\/3102<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">0.91<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center; font-weight: bold;\">EP-415BF4<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">12.700<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">7.75<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">4.88<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">4.09<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">16.40<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">17.00<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">11.00<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">1.3\/3.1<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">12.0\/2698<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">1.07<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center; font-weight: bold;\">EP-P12.7F4<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">12.700<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">7.50<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">5.50<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">4.45<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">15.60<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">14.30<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">8.50<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">2.03<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">15.0\/3372<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">0.99<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center; font-weight: bold;\">EP-08BF20<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">12.700<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">8.51<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">7.75<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">4.45<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">16.70<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">16.50<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">10.50<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">1.60<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">18.0\/4046<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">1.04<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center; font-weight: bold;\">EP-08BF208<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">12.700<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">8.51<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">7.75<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">4.45<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">17.00<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">16.50<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">10.50<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">1.60<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">10.0\/2248<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">1.06<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center; font-weight: bold;\">EP-16AF101<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">25.400<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">15.88<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">15.75<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">7.92<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">32.70<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">26.90<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">14.80<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">3.25<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">56.7\/12746<\/td>\n<td style=\"padding: 9px 9px; border: 1px solid #cbd5e1; text-align: center;\">3.45<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div style=\"position: relative; border-radius: 8px; overflow: hidden; margin-bottom: 40px;\">\n<p><img decoding=\"async\" style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.16;\" role=\"presentation\" src=\"https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/Section-BG-Dark-Tech-Pattern.webp\" alt=\"\" \/><\/p>\n<div style=\"position: relative; z-index: 1; background: rgba(13,27,46,0.88); padding: 36px 4%; border-radius: 8px;\">\n<h2 style=\"color: #ffffff; font-size: clamp(20px,2.6vw,28px); border-bottom: 1px solid rgba(232,160,32,0.4); padding-bottom: 10px; margin-top: 0;\">Anti-Backbend Push Chain &#8211; Key Technical Features<\/h2>\n<div style=\"display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 18px; margin-top: 20px;\">\n<div style=\"background: rgba(255,255,255,0.06); border-left: 4px solid #e8a020; padding: 18px 16px; border-radius: 4px;\">\n<h3 style=\"color: #e8a020; font-size: clamp(13px,1.5vw,15px); margin: 0 0 8px; font-weight: bold;\">G\u00e9om\u00e9trie de la plaque anti-retournement<\/h3>\n<p style=\"color: #a8bdd4; font-size: clamp(12px,1.4vw,13px); line-height: 1.65; margin: 0;\">The extended outer link plates bear against adjacent inner link plates when the chain is in the straight configuration, blocking back-articulation and preventing compressive buckling. The chain is fully rigid in the push direction and normally flexible in the pull direction. This dual behaviour &#8211; rigid rod when pushed, flexible chain when pulled &#8211; enables a single chain to both push a load open and pull it closed from the same actuator without a separate push mechanism.<\/p>\n<\/div>\n<div style=\"background: rgba(255,255,255,0.06); border-left: 4px solid #e8a020; padding: 18px 16px; border-radius: 4px;\">\n<h3 style=\"color: #e8a020; font-size: clamp(13px,1.5vw,15px); margin: 0 0 8px; font-weight: bold;\">Rangement compact en position r\u00e9tract\u00e9e<\/h3>\n<p style=\"color: #a8bdd4; font-size: clamp(12px,1.4vw,13px); line-height: 1.65; margin: 0;\">Lorsque le l\u00e8ve-vitre r\u00e9tracte la cha\u00eene, son articulation normale reprend et la cha\u00eene se replie de mani\u00e8re compacte dans le magasin ou le canal de rangement du l\u00e8ve-vitre, derri\u00e8re le pignon d'entra\u00eenement. Le bo\u00eetier du l\u00e8ve-vitre peut \u00eatre nettement plus court que la course d'ouverture maximale de la fen\u00eatre, car la cha\u00eene se range repli\u00e9e au lieu de rester d\u00e9ploy\u00e9e. Les mod\u00e8les EP-06BF34 (pas de 9,525 mm) et EP-08BF6 (pas de 12,700 mm) sont les plus courants pour les l\u00e8ve-vitres compacts destin\u00e9s aux applications r\u00e9sidentielles et commerciales l\u00e9g\u00e8res.<\/p>\n<\/div>\n<div style=\"background: rgba(255,255,255,0.06); border-left: 4px solid #e8a020; padding: 18px 16px; border-radius: 4px;\">\n<h3 style=\"color: #e8a020; font-size: clamp(13px,1.5vw,15px); margin: 0 0 8px; font-weight: bold;\">Compatibilit\u00e9 des canaux de guidage et des tubes<\/h3>\n<p style=\"color: #a8bdd4; font-size: clamp(12px,1.4vw,13px); line-height: 1.65; margin: 0;\">Les cha\u00eenes anti-retour EP sont con\u00e7ues pour fonctionner dans un canal ou un tube de guidage qui les soutient sur toute leur longueur de pouss\u00e9e, emp\u00eachant ainsi le flambage lat\u00e9ral sous des charges de compression \u00e9lev\u00e9es. Les dimensions H et h du tableau des sp\u00e9cifications sont les param\u00e8tres cl\u00e9s pour dimensionner la section transversale du canal de guidage. H correspond \u00e0 la hauteur totale de la cha\u00eene, extension de la plaque anti-retour comprise, et h \u00e0 la profondeur int\u00e9rieure de cette plaque. L'al\u00e9sage du canal de guidage doit avoir un d\u00e9gagement sup\u00e9rieur \u00e0 H sur l'axe de la hauteur de la cha\u00eene et sup\u00e9rieur \u00e0 b1 (plus la saillie de la goupille) sur l'axe de la largeur de la cha\u00eene afin de permettre un d\u00e9placement fluide sans blocage.<\/p>\n<\/div>\n<div style=\"background: rgba(255,255,255,0.06); border-left: 4px solid #e8a020; padding: 18px 16px; border-radius: 4px;\">\n<h3 style=\"color: #e8a020; font-size: clamp(13px,1.5vw,15px); margin: 0 0 8px; font-weight: bold;\">Variantes de Bush Chain<\/h3>\n<p style=\"color: #a8bdd4; font-size: clamp(12px,1.4vw,13px); line-height: 1.65; margin: 0;\">Models marked * &#8211; EP-*06CF22, EP-*06CF30, and EP-*P9.525F1 &#8211; are bush chain (sleeve chain) variants where no separate outer roller is fitted. The d1 dimension for these models is the external diameter of the bush, not an outer roller. Bush chain variants are lighter than roller chain equivalents at the same pitch and are used where roller wear from sprocket engagement is not a concern due to the low cycle count of typical window actuator applications. The absence of the outer roller also reduces the overall chain height slightly.<\/p>\n<\/div>\n<div style=\"background: rgba(255,255,255,0.06); border-left: 4px solid #e8a020; padding: 18px 16px; border-radius: 4px;\">\n<h3 style=\"color: #e8a020; font-size: clamp(13px,1.5vw,15px); margin: 0 0 8px; font-weight: bold;\">Low Maintenance &#8211; Low Cycle Application<\/h3>\n<p style=\"color: #a8bdd4; font-size: clamp(12px,1.4vw,13px); line-height: 1.65; margin: 0;\">Window actuator push chains operate at very low cycle rates &#8211; typically 1 to 10 open-close operations per day &#8211; and at very low speeds (0.01 to 0.1 m\/s chain speed). These characteristics mean that lubrication requirements are minimal and chain wear is negligible under normal operating conditions. The EP push chain range is supplied pre-lubricated and requires no additional lubrication for normal building ventilation applications. For industrial applications with higher cycle rates, periodic light mineral oil application to the joint areas is recommended.<\/p>\n<\/div>\n<div style=\"background: rgba(255,255,255,0.06); border-left: 4px solid #e8a020; padding: 18px 16px; border-radius: 4px;\">\n<h3 style=\"color: #e8a020; font-size: clamp(13px,1.5vw,15px); margin: 0 0 8px; font-weight: bold;\">Options r\u00e9sistantes \u00e0 la corrosion<\/h3>\n<p style=\"color: #a8bdd4; font-size: clamp(12px,1.4vw,13px); line-height: 1.65; margin: 0;\">Window actuator chains are frequently installed in humid, coastal, or chemically challenging environments &#8211; pool enclosures, conservatories, marine buildings, and industrial facilities with chemical atmospheres. EP push chains in the 06BF and 08BF series are available in stainless steel (SUS304 or SUS316L) on request for these environments. Nickel-plated carbon steel variants are also available for moderate corrosion resistance at lower cost. Please specify the required surface treatment or material grade when requesting a quotation.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h2 style=\"color: #0d1b2e; font-size: clamp(20px,2.6vw,28px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 0;\">Applications<\/h2>\n<div style=\"display: flex; flex-wrap: wrap; gap: 16px; margin: 20px 0 40px;\">\n<div style=\"flex: 1 1 240px; max-width: 370px; padding: 20px; background: #ffffff; border-left: 4px solid #1a6db5; border-radius: 6px; box-shadow: 0 2px 8px rgba(13,27,46,0.07);\">\n<h3 style=\"color: #0d1b2e; margin-top: 0; font-size: clamp(14px,1.7vw,17px);\">Fen\u00eatres de toit, puits de lumi\u00e8re et fen\u00eatres hautes<\/h3>\n<p style=\"color: #334155; line-height: 1.7; font-size: clamp(12px,1.4vw,14px); margin-bottom: 0;\">Les cha\u00eenettes de pouss\u00e9e EP-06BF34, EP-*06CF22 et EP-08BF6 constituent la sp\u00e9cification standard pour les actionneurs motoris\u00e9s de fen\u00eatres de toit et de puits de lumi\u00e8re dans les b\u00e2timents r\u00e9sidentiels, commerciaux et institutionnels. L'actionneur est g\u00e9n\u00e9ralement mont\u00e9 \u00e0 l'extr\u00e9mit\u00e9 de la fen\u00eatre de toit c\u00f4t\u00e9 charni\u00e8re, et la cha\u00eenette pousse le long du profil\u00e9 du cadre pour ouvrir le panneau vitr\u00e9 malgr\u00e9 la gravit\u00e9 et la pression du vent. Le rangement compact de la cha\u00eenette repli\u00e9e permet de concevoir des bo\u00eetiers d'actionneur minces, adapt\u00e9s aux profil\u00e9s \u00e9troits des syst\u00e8mes de fen\u00eatres de toit modernes.<\/p>\n<\/div>\n<div style=\"flex: 1 1 240px; max-width: 370px; padding: 20px; background: #ffffff; border-left: 4px solid #1a6db5; border-radius: 6px; box-shadow: 0 2px 8px rgba(13,27,46,0.07);\">\n<h3 style=\"color: #0d1b2e; margin-top: 0; font-size: clamp(14px,1.7vw,17px);\">Syst\u00e8mes de ventilation des fum\u00e9es et de s\u00e9curit\u00e9 incendie<\/h3>\n<p style=\"color: #334155; line-height: 1.7; font-size: clamp(12px,1.4vw,14px); margin-bottom: 0;\">Les extracteurs de fum\u00e9e automatiques et les syst\u00e8mes d'ouverture de ventilation \u00e0 d\u00e9clenchement incendie utilisent des cha\u00eenettes de pouss\u00e9e EP des s\u00e9ries 08BF et P12.7F pour leur r\u00e9sistance \u00e0 la traction et leur force de pouss\u00e9e sup\u00e9rieures. Dans les applications de d\u00e9senfumage, l'actionneur doit maintenir la ventilation ferm\u00e9e de mani\u00e8re fiable face au vent en conditions normales, puis l'ouvrir rapidement et la maintenir compl\u00e8tement ouverte en cas d'incendie. La g\u00e9om\u00e9trie de verrouillage anti-retournement assure la rigidit\u00e9 structurelle n\u00e9cessaire au maintien de la position ouverte sous l'effet du vent lat\u00e9ral, sans n\u00e9cessiter de dispositif de maintien m\u00e9canique suppl\u00e9mentaire.<\/p>\n<\/div>\n<div style=\"flex: 1 1 240px; max-width: 370px; padding: 20px; background: #ffffff; border-left: 4px solid #1a6db5; border-radius: 6px; box-shadow: 0 2px 8px rgba(13,27,46,0.07);\">\n<h3 style=\"color: #0d1b2e; margin-top: 0; font-size: clamp(14px,1.7vw,17px);\">Actionneurs de ventilation industrielle et de persiennes<\/h3>\n<p style=\"color: #334155; line-height: 1.7; font-size: clamp(12px,1.4vw,14px); margin-bottom: 0;\">Les cha\u00eenes EP-08BF20, EP-P12.7F4 et EP-16AF101 sont destin\u00e9es aux motorisations de persiennes de ventilation pour b\u00e2timents industriels, panneaux de ventilation pour b\u00e2timents agricoles, ouvre-fen\u00eatres de serres et fen\u00eatres motoris\u00e9es grand format pour usines et entrep\u00f4ts. La cha\u00eene EP-16AF101, avec un pas de 25,4 mm et une r\u00e9sistance \u00e0 la traction minimale de 56,7 kN, est id\u00e9ale pour les applications industrielles exigeant une force importante, notamment lorsque la surface de la fen\u00eatre ou de la persienne est grande, que la prise au vent est significative ou que plusieurs ouvertures doivent \u00eatre actionn\u00e9es par un seul circuit de cha\u00eene.<\/p>\n<\/div>\n<\/div>\n<p><img decoding=\"async\" style=\"width: 100%; height: auto; border-radius: 6px; box-shadow: 0 2px 8px rgba(13,27,46,0.10); display: block; margin-bottom: 40px;\" title=\"fabrication de cha\u00eenes de pouss\u00e9e EP\" src=\"https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/ever-power-service-1.webp\" alt=\"Production et assemblage de cha\u00eenes de pouss\u00e9e anti-retournement Ever-Power\" \/><\/p>\n<h2 style=\"color: #0d1b2e; font-size: clamp(20px,2.6vw,28px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 0;\">Pignons compatibles et autres types de cha\u00eenes<\/h2>\n<div style=\"display: flex; flex-wrap: wrap; gap: 28px; margin: 20px 0 20px; align-items: flex-start;\">\n<div style=\"flex: 1 1 260px;\">\n<p><img decoding=\"async\" style=\"width: 100%; height: auto; border-radius: 6px; box-shadow: 0 3px 12px rgba(13,27,46,0.12); display: block; margin-bottom: 14px;\" title=\"Pignons EP adapt\u00e9s pour cha\u00eenes de pouss\u00e9e\" src=\"https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/Product-Sprocket-Group-Display.webp\" alt=\"Pignons et galets de cha\u00eene Ever-Power pour cha\u00eenes de pouss\u00e9e anti-retournement\" \/><\/p>\n<p style=\"font-size: clamp(13px,1.5vw,15px); color: #334155; line-height: 1.7; margin: 0 0 14px;\">Des pignons d'entra\u00eenement adapt\u00e9s aux cha\u00eenes de pouss\u00e9e anti-retour EP, y compris des pignons de qualit\u00e9 actionneur et des ensembles pignon-arbre, sont disponibles sur le site de notre partenaire. <a style=\"color: #1a6db5; text-decoration: underline;\" href=\"https:\/\/sprocket-chain.net\/\" target=\"_blank\" rel=\"noopener\">cha\u00eene-de-pignon.net<\/a>.<\/p>\n<p><a style=\"display: inline-block; background: #e8a020; color: #ffffff; font-weight: bold; font-size: clamp(13px,1.5vw,15px); padding: 10px 24px; border-radius: 5px; text-decoration: none;\" href=\"https:\/\/sprocket-chain.net\/\" target=\"_blank\" rel=\"noopener\">Voir les pignons compatibles \u2192<\/a><\/p>\n<\/div>\n<\/div>\n<div style=\"margin: 0 0 40px;\">\n<div style=\"display: flex; flex-wrap: wrap; gap: 28px; margin: 20px 0 20px; align-items: flex-start;\">\n<div style=\"flex: 1 1 260px;\">\n<h3 style=\"color: #0d1b2e; font-size: clamp(20px,2.6vw,28px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 0;\">Autres cha\u00eenes<\/h3>\n<div style=\"display: flex; flex-wrap: wrap; gap: 14px; margin: 20px 0 40px;\">\n<div style=\"flex: 1 1 200px; max-width: 240px; text-align: center; padding: 20px 14px; background: #f4f7fb; border-radius: 6px; box-shadow: 0 2px 6px rgba(13,27,46,0.06);\">\n<p><img decoding=\"async\" style=\"width: 100%; max-width: 150px; height: auto; border-radius: 4px; margin: 0 auto 10px; display: block;\" title=\"Cha\u00eene en acier inoxydable EP\" src=\"https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/types-of-chain-1.webp\" alt=\"Cha\u00eenes en acier inoxydable Ever-Power de Cor\u00e9e, SUS304 et SUS316L\" \/><\/p>\n<h3 style=\"color: #0d1b2e; font-size: clamp(13px,1.5vw,14px); margin: 0 0 6px;\"><a style=\"color: #0d1b2e; text-decoration: none;\" href=\"https:\/\/5speedtransmission.com\/fr\/categorie-produit\/stainless-steel-chains\/\">Cha\u00eenes en acier inoxydable<\/a><\/h3>\n<p style=\"font-size: 12px; color: #64748b; line-height: 1.6; margin: 0 0 10px;\">Cha\u00eenes \u00e0 rouleaux SUS304 et SUS316L pour les environnements alimentaires, pharmaceutiques et corrosifs.<\/p>\n<p><a style=\"display: inline-block; background: #0d1b2e; color: #fff; font-size: 12px; font-weight: bold; padding: 7px 14px; border-radius: 4px; text-decoration: none;\" href=\"https:\/\/5speedtransmission.com\/fr\/categorie-produit\/stainless-steel-chains\/\">Champ de vision<\/a><\/p>\n<\/div>\n<div style=\"flex: 1 1 200px; max-width: 240px; text-align: center; padding: 20px 14px; background: #f4f7fb; border-radius: 6px; box-shadow: 0 2px 6px rgba(13,27,46,0.06);\">\n<p><img decoding=\"async\" style=\"width: 100%; max-width: 150px; height: auto; border-radius: 4px; margin: 0 auto 10px; display: block;\" title=\"cha\u00eene agricole EP\" src=\"https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/types-of-chain-2.webp\" alt=\"Cha\u00eenes agricoles Korea Ever-Power s\u00e9rie CA CC S\" \/><\/p>\n<h3 style=\"color: #0d1b2e; font-size: clamp(13px,1.5vw,14px); margin: 0 0 6px;\"><a style=\"color: #0d1b2e; text-decoration: none;\" href=\"https:\/\/5speedtransmission.com\/fr\/categorie-produit\/agricultural-chains\/\">Cha\u00eenes agricoles<\/a><\/h3>\n<p style=\"font-size: 12px; color: #64748b; line-height: 1.6; margin: 0 0 10px;\">S\u00e9ries CA, CC et S pour moissonneuses-batteuses, presses \u00e0 balles et machines de manutention des r\u00e9coltes. Norme ISO 487.<\/p>\n<p><a style=\"display: inline-block; background: #0d1b2e; color: #fff; font-size: 12px; font-weight: bold; padding: 7px 14px; border-radius: 4px; text-decoration: none;\" href=\"https:\/\/5speedtransmission.com\/fr\/categorie-produit\/agricultural-chains\/\">Champ de vision<\/a><\/p>\n<\/div>\n<div style=\"flex: 1 1 200px; max-width: 240px; text-align: center; padding: 20px 14px; background: #f4f7fb; border-radius: 6px; box-shadow: 0 2px 6px rgba(13,27,46,0.06);\">\n<p><img decoding=\"async\" style=\"width: 100%; max-width: 150px; height: auto; border-radius: 4px; margin: 0 auto 10px; display: block;\" title=\"Cha\u00eene d&#039;ing\u00e9nierie EP\" src=\"https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/Product-Leaf-Chain-Hero.webp\" alt=\"Cha\u00eenes d&#039;ing\u00e9nierie Ever-Power de Cor\u00e9e WH en acier soud\u00e9\" \/><\/p>\n<h3 style=\"color: #0d1b2e; font-size: clamp(13px,1.5vw,14px); margin: 0 0 6px;\"><a style=\"color: #0d1b2e; text-decoration: none;\" href=\"https:\/\/5speedtransmission.com\/fr\/categorie-produit\/engineering-chains\/\">Cha\u00eenes d'ing\u00e9nierie<\/a><\/h3>\n<p style=\"font-size: 12px; color: #64748b; line-height: 1.6; margin: 0 0 10px;\">Cha\u00eenes en acier soud\u00e9 WH, en fonte et \u00e0 maillons ronds pour le transport dans les secteurs du ciment, des mines et des installations lourdes.<\/p>\n<p><a style=\"display: inline-block; background: #0d1b2e; color: #fff; font-size: 12px; font-weight: bold; padding: 7px 14px; border-radius: 4px; text-decoration: none;\" href=\"https:\/\/5speedtransmission.com\/fr\/categorie-produit\/engineering-chains\/\">Champ de vision<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div style=\"margin: 0 0 40px;\"><\/div>\n<\/div>\n<h2 style=\"color: #0d1b2e; font-size: clamp(20px,2.6vw,28px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 0;\">Foire aux questions<\/h2>\n<div style=\"margin-top: 20px;\">\n<details style=\"margin-bottom: 16px; border: 1px solid #dde6f2; border-radius: 6px; overflow: hidden;\">\n<summary style=\"background: #f4f7fb; padding: 14px 18px; font-size: clamp(14px,1.6vw,16px); font-weight: bold; color: #0d1b2e; cursor: pointer; list-style: none;\">Comment une cha\u00eene anti-retournement transmet-elle une force de pouss\u00e9e sans se d\u00e9former ?<\/summary>\n<div style=\"padding: 16px 18px; font-size: clamp(13px,1.5vw,15px); color: #334155; line-height: 1.75;\">A standard roller chain buckles immediately under any compressive load because the joints are free to articulate in both directions. An anti-backbend chain is prevented from bending in the reverse (back) direction by the geometry of the outer link plates, which are extended or stepped so that they physically bear against the inner link plates at the straight configuration. When a compressive load is applied &#8211; the motor pushes the chain &#8211; the chain cannot bend backward and instead transmits the compressive force along the chain length as a rigid column. The guide channel or tube surrounding the chain provides lateral support to prevent the chain from buckling sideways under load, completing the push force transmission path to the driven window or louvre.<\/div>\n<\/details>\n<details style=\"margin-bottom: 16px; border: 1px solid #dde6f2; border-radius: 6px; overflow: hidden;\">\n<summary style=\"background: #f4f7fb; padding: 14px 18px; font-size: clamp(14px,1.6vw,16px); font-weight: bold; color: #0d1b2e; cursor: pointer; list-style: none;\">Quelles sont les dimensions du guide-cha\u00eene n\u00e9cessaires pour une cha\u00eene sp\u00e9cifique\u00a0?<\/summary>\n<div style=\"padding: 16px 18px; font-size: clamp(13px,1.5vw,15px); color: #334155; line-height: 1.75;\">The guide channel cross-section must clear the full chain profile. The minimum channel height clearance is the H max dimension from the specification table plus 0.5 mm running clearance on each side (H max + 1.0 mm total height). The minimum channel width clearance is the pin length L max plus 0.5 mm running clearance on each side (L max + 1.0 mm total width). For example, EP-08BF6 has H max 17.00 mm and L max 16.60 mm, requiring a channel of at least 18.0 mm height by 17.6 mm width. For applications with significant chain speed or vibration, increase the clearance to 1.0 mm on each side. The channel must be smooth-bore on the inner surfaces and straight along the push axis &#8211; any bow in the channel will cause the chain to bind under compressive load.<\/div>\n<\/details>\n<details style=\"margin-bottom: 16px; border: 1px solid #dde6f2; border-radius: 6px; overflow: hidden;\">\n<summary style=\"background: #f4f7fb; padding: 14px 18px; font-size: clamp(14px,1.6vw,16px); font-weight: bold; color: #0d1b2e; cursor: pointer; list-style: none;\">Quelle est la force de pouss\u00e9e maximale qu'une cha\u00eene donn\u00e9e peut transmettre\u00a0?<\/summary>\n<div style=\"padding: 16px 18px; font-size: clamp(13px,1.5vw,15px); color: #334155; line-height: 1.75;\">La force de pouss\u00e9e maximale est limit\u00e9e par la r\u00e9sistance au flambage de la colonne du syst\u00e8me de cha\u00eene guid\u00e9e, et non par la r\u00e9sistance \u00e0 la traction de la cha\u00eene. La r\u00e9sistance de la colonne d\u00e9pend de la longueur de cha\u00eene non support\u00e9e entre le point de sortie du guide et le point d'application de la charge (le cadre de la fen\u00eatre), de la rigidit\u00e9 de la section transversale de la cha\u00eene et des conditions aux extr\u00e9mit\u00e9s. Pour la plupart des applications d'actionneurs de fen\u00eatre, la longueur non support\u00e9e est tr\u00e8s courte (moins de 50 mm) et le point de sortie du guide est proche du cadre de la fen\u00eatre\u00a0; la r\u00e9sistance de la colonne est donc tr\u00e8s \u00e9lev\u00e9e par rapport \u00e0 la force de pouss\u00e9e requise. Si la longueur non support\u00e9e est plus importante, il convient d'utiliser une cha\u00eene avec une dimension H plus \u00e9lev\u00e9e (profil de plaque plus haut) car sa rigidit\u00e9 de section est sup\u00e9rieure. Contactez EP en pr\u00e9cisant la g\u00e9om\u00e9trie de votre actionneur et la force de pouss\u00e9e requise pour obtenir une recommandation.<\/div>\n<\/details>\n<details style=\"margin-bottom: 16px; border: 1px solid #dde6f2; border-radius: 6px; overflow: hidden;\">\n<summary style=\"background: #f4f7fb; padding: 14px 18px; font-size: clamp(14px,1.6vw,16px); font-weight: bold; color: #0d1b2e; cursor: pointer; list-style: none;\">Les cha\u00eenes d'approvisionnement EP peuvent-elles r\u00e9pondre aux sp\u00e9cifications des fabricants d'\u00e9quipement d'origine (OEM) des actionneurs existants\u00a0?<\/summary>\n<div style=\"padding: 16px 18px; font-size: clamp(13px,1.5vw,15px); color: #334155; line-height: 1.75;\">Yes. The models in the specification table cover the most widely used anti-backbend chain specifications in the window actuator industry. For actuators from major OEM manufacturers such as Sommer, Geze, Tormax, Raico, and others, please supply the existing chain designation or a chain sample so EP can verify the dimensional match. Key dimensions to verify are pitch, roller or bush diameter, inner width (b1), pin diameter (d2), pin length (L), and overall plate height (H). EP can also produce custom anti-backbend chain configurations outside the standard table if the required quantity justifies a tooling investment &#8211; minimum order for custom configurations is typically 200 metres.<\/div>\n<\/details>\n<details style=\"margin-bottom: 16px; border: 1px solid #dde6f2; border-radius: 6px; overflow: hidden;\">\n<summary style=\"background: #f4f7fb; padding: 14px 18px; font-size: clamp(14px,1.6vw,16px); font-weight: bold; color: #0d1b2e; cursor: pointer; list-style: none;\">Quelle est la diff\u00e9rence entre EP-08BF20 et EP-08BF208\u00a0?<\/summary>\n<div style=\"padding: 16px 18px; font-size: clamp(13px,1.5vw,15px); color: #334155; line-height: 1.75;\">Les mod\u00e8les EP-08BF20 et EP-08BF208 pr\u00e9sentent les m\u00eames dimensions\u00a0: pas (12,700\u00a0mm), diam\u00e8tre du rouleau (8,51\u00a0mm), largeur int\u00e9rieure (7,75\u00a0mm), diam\u00e8tre de l\u2019axe (4,45\u00a0mm) et hauteur de la plaque. La diff\u00e9rence r\u00e9side dans la r\u00e9sistance \u00e0 la traction minimale\u00a0: 18,0\u00a0kN (4\u00a0046\u00a0lbf) pour l\u2019EP-08BF20 et 10,0\u00a0kN (2\u00a0248\u00a0lbf) pour l\u2019EP-08BF208. Cette diff\u00e9rence s\u2019explique par l\u2019\u00e9paisseur ou le traitement du mat\u00e9riau de la plaque. L\u2019EP-08BF208 est pr\u00e9conis\u00e9 pour les applications \u00e0 faible charge ou pour les actionneurs con\u00e7us initialement avec une plaque plus l\u00e9g\u00e8re. L\u2019EP-08BF20, plus r\u00e9sistant, est destin\u00e9 aux applications exigeant une capacit\u00e9 de force de pouss\u00e9e et de traction sup\u00e9rieure. La longueur de l\u2019axe de l\u2019EP-08BF208 (17,00\u00a0mm) est \u00e9galement l\u00e9g\u00e8rement sup\u00e9rieure \u00e0 celle de l\u2019EP-08BF20 (16,70\u00a0mm), ce qui influe sur le dimensionnement de la largeur du canal de guidage.<\/div>\n<\/details>\n<details style=\"margin-bottom: 4px; border: 1px solid #dde6f2; border-radius: 6px; overflow: hidden;\">\n<summary style=\"background: #f4f7fb; padding: 14px 18px; font-size: clamp(14px,1.6vw,16px); font-weight: bold; color: #0d1b2e; cursor: pointer; list-style: none;\">Quelle longueur dois-je commander et comment la cha\u00eene est-elle stock\u00e9e\u00a0?<\/summary>\n<div style=\"padding: 16px 18px; font-size: clamp(13px,1.5vw,15px); color: #334155; line-height: 1.75;\">The required chain length is the full push stroke of the actuator plus the storage length in the magazine plus the wrap around the drive sprocket plus a short tail for the chain anchor point. In practice, the actuator manufacturer specifies the chain length for their product as part of the system design &#8211; for OEM actuator replacement chains, simply order the length specified in the actuator service documentation. For new actuator designs, add approximately 20% to the maximum opening stroke to allow for sprocket wrap and storage tail. The chain stores in the magazine by normal chain articulation &#8211; the retracted chain folds back on itself at the sprocket exit with a bend radius equal to approximately 3 to 4 times the chain pitch, so the magazine depth must be at least this distance from the sprocket centreline.<\/div>\n<\/details>\n<\/div>\n<h2 style=\"color: #0d1b2e; font-size: clamp(20px,2.6vw,28px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 40px;\">Ce que disent nos clients<\/h2>\n<div style=\"display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; margin: 20px 0 40px;\">\n<div style=\"background: #ffffff; border-radius: 6px; padding: 22px; box-shadow: 0 2px 8px rgba(13,27,46,0.08); border-top: 3px solid #e8a020;\">\n<p style=\"color: #e8a020; font-size: 16px; margin: 0 0 10px;\">\u2605\u2605\u2605\u2605\u2605<\/p>\n<p style=\"font-size: clamp(12px,1.4vw,14px); color: #334155; line-height: 1.7; margin: 0 0 14px; font-style: italic;\">&#8220;We manufacture electric window actuators for commercial and institutional buildings. EP-08BF6 chains are now our standard specification for mid-range actuators. The dimensional consistency batch to batch is excellent &#8211; our assembly line runs with zero fit adjustments. We have shipped over 3,000 actuator units using EP chains in the last 18 months with no field failures attributable to chain quality.&#8221;<\/p>\n<p style=\"font-size: 12px; color: #64748b; margin: 0;\"><strong>AM, Responsable de production<\/strong><br \/>\nPoland &#8211; Window Actuator Manufacturer<\/p>\n<\/div>\n<div style=\"background: #ffffff; border-radius: 6px; padding: 22px; box-shadow: 0 2px 8px rgba(13,27,46,0.08); border-top: 3px solid #e8a020;\">\n<p style=\"color: #e8a020; font-size: 16px; margin: 0 0 10px;\">\u2605\u2605\u2605\u2605\u2605<\/p>\n<p style=\"font-size: clamp(12px,1.4vw,14px); color: #334155; line-height: 1.7; margin: 0 0 14px; font-style: italic;\">&#8220;We specify EP-16AF101 for our heavy industrial ventilation louvre drives on factory buildings. The 56 kN tensile rating gives us comfortable safety margin for large louvre panels in high-wind locations. The chain has been running on a coastal cement works installation for 4 years with minimal wear. We apply light oil at the annual service visit and nothing more.&#8221;<\/p>\n<p style=\"font-size: 12px; color: #64748b; margin: 0;\"><strong>TO, directeur technique<\/strong><br \/>\nUK &#8211; Industrial Ventilation Specialist<\/p>\n<\/div>\n<div style=\"background: #ffffff; border-radius: 6px; padding: 22px; box-shadow: 0 2px 8px rgba(13,27,46,0.08); border-top: 3px solid #e8a020;\">\n<p style=\"color: #e8a020; font-size: 16px; margin: 0 0 10px;\">\u2605\u2605\u2605\u2605\u2605<\/p>\n<p style=\"font-size: clamp(12px,1.4vw,14px); color: #334155; line-height: 1.7; margin: 0 0 14px; font-style: italic;\">&#8220;EP-*06CF30 chains for our compact roof light actuators. The bush chain variant allows a slimmer guide channel than a roller chain equivalent, which is important for our slim-profile product line. EP verified the chain against our sample within 2 working days and delivered 500 metres of cut-to-length chains within the week. Exactly what we needed for a product launch deadline.&#8221;<\/p>\n<p style=\"font-size: 12px; color: #64748b; margin: 0;\"><strong>SL, ing\u00e9nieur concepteur<\/strong><br \/>\nDenmark &#8211; Roof Light Manufacturer<\/p>\n<\/div>\n<div style=\"background: #ffffff; border-radius: 6px; padding: 22px; box-shadow: 0 2px 8px rgba(13,27,46,0.08); border-top: 3px solid #e8a020;\">\n<p style=\"color: #e8a020; font-size: 16px; margin: 0 0 10px;\">\u2605\u2605\u2605\u2605\u2605<\/p>\n<p style=\"font-size: clamp(12px,1.4vw,14px); color: #334155; line-height: 1.7; margin: 0 0 14px; font-style: italic;\">&#8220;We supply smoke ventilator replacement chains to the UK market. EP-08BF20 covers the majority of the field installations we encounter. The chains arrive clearly labelled with batch and dimensional data on the delivery documentation, which our service engineers need for job records. A reliable supplier for a critical life safety application.&#8221;<\/p>\n<p style=\"font-size: 12px; color: #64748b; margin: 0;\"><strong>RP, directeur des op\u00e9rations<\/strong><br \/>\nUK &#8211; Smoke Ventilation Service Company<\/p>\n<\/div>\n<\/div>\n<div style=\"position: relative; border-radius: 8px; overflow: hidden; margin-top: 8px;\">\n<p><img decoding=\"async\" style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.22;\" role=\"presentation\" src=\"https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/Brand-Feature-Bar-BG.webp\" alt=\"\" \/><\/p>\n<div style=\"position: relative; z-index: 1; background: rgba(13,27,46,0.90); border-radius: 8px; padding: 36px 5%; text-align: center;\">\n<h3 style=\"color: #ffffff; font-size: clamp(18px,2.4vw,26px); margin: 0 0 12px;\">Demande de devis pour les cha\u00eenes de pouss\u00e9e anti-retour EP<\/h3>\n<p style=\"color: #c8d6e8; font-size: clamp(13px,1.6vw,16px); line-height: 1.7; margin: 0 0 24px; max-width: 640px; margin-left: auto; margin-right: auto;\">Veuillez indiquer le mod\u00e8le de cha\u00eene EP (voir tableau des sp\u00e9cifications), la quantit\u00e9 en m\u00e8tres et pr\u00e9ciser si des longueurs pr\u00e9d\u00e9coup\u00e9es avec maillons de raccordement sont n\u00e9cessaires. Pour le remplacement d'un actionneur d'origine, veuillez indiquer la marque et le mod\u00e8le de l'actionneur ou fournir un \u00e9chantillon de la cha\u00eene existante. Des versions en acier inoxydable et nickel\u00e9es sont disponibles sur demande. Notre \u00e9quipe vous r\u00e9pondra sous 24 heures ouvrables.<\/p>\n<div style=\"display: flex; flex-wrap: wrap; gap: 12px; justify-content: center;\"><a style=\"display: inline-block; background: #e8a020; color: #ffffff; font-weight: bold; font-size: clamp(14px,1.7vw,16px); padding: 14px 32px; border-radius: 5px; text-decoration: none;\" href=\"https:\/\/5speedtransmission.com\/fr\/contact-us\/\">Obtenez un devis d\u00e8s maintenant<\/a><br \/>\n<a style=\"display: inline-block; background: transparent; color: #ffffff; font-weight: 600; font-size: clamp(14px,1.7vw,16px); padding: 14px 32px; border-radius: 5px; text-decoration: none; border: 2px solid rgba(255,255,255,0.35);\" href=\"https:\/\/5speedtransmission.com\/fr\/categorie-produit\/driving-chains\/\">Tous les produits de cha\u00eene de transmission<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Cha\u00eenes de pouss\u00e9e EP-06BF, EP-08BF, EP-415BF, EP-P12.7F, EP-08BF208 et EP-16AF. Rigides en pouss\u00e9e, flexibles en traction. Pas de 9,525 mm \u00e0 25,400 mm. Pour actionneurs de fen\u00eatres automatiques, motorisations de puits de lumi\u00e8re, syst\u00e8mes de persiennes et commandes de ventilation architecturale.<\/p>","protected":false},"featured_media":212,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[18],"product_tag":[],"class_list":["post-218","product","type-product","status-publish","has-post-thumbnail","product_cat-driving-chains","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/5speedtransmission.com\/fr\/wp-json\/wp\/v2\/product\/218","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/5speedtransmission.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/5speedtransmission.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/5speedtransmission.com\/fr\/wp-json\/wp\/v2\/comments?post=218"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/5speedtransmission.com\/fr\/wp-json\/wp\/v2\/media\/212"}],"wp:attachment":[{"href":"https:\/\/5speedtransmission.com\/fr\/wp-json\/wp\/v2\/media?parent=218"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/5speedtransmission.com\/fr\/wp-json\/wp\/v2\/product_brand?post=218"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/5speedtransmission.com\/fr\/wp-json\/wp\/v2\/product_cat?post=218"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/5speedtransmission.com\/fr\/wp-json\/wp\/v2\/product_tag?post=218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}