{"id":354,"date":"2026-08-14T01:30:44","date_gmt":"2026-08-14T01:30:44","guid":{"rendered":"https:\/\/5speedtransmission.com\/how-to-calculate-sprocket-pitch-diameter-from-chain-pitch-and-tooth-count\/"},"modified":"2026-08-14T01:30:44","modified_gmt":"2026-08-14T01:30:44","slug":"how-to-calculate-sprocket-pitch-diameter-from-chain-pitch-and-tooth-count","status":"publish","type":"post","link":"https:\/\/5speedtransmission.com\/cs\/how-to-calculate-sprocket-pitch-diameter-from-chain-pitch-and-tooth-count\/","title":{"rendered":"Jak vypo\u010d\u00edtat pr\u016fm\u011br rozte\u010de \u0159et\u011bzov\u00e9ho kola z rozte\u010de \u0159et\u011bzu a po\u010dtu zub\u016f"},"content":{"rendered":"<article style=\"--color-brand:darkslategray;--color-accent:steelblue;--color-neutral:whitesmoke;--color-success:seagreen;--color-warning:darkorange;--color-surface:white;--color-text:black;--color-muted:slategray;font-family:Arial,sans-serif;line-height:1.6;color:var(--color-text);background:var(--color-surface);box-sizing:border-box;\">\n<header style=\"position:relative;overflow:hidden;background:var(--color-brand);background-image:url('https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/Hero-Slide-1-Transmission-Components.webp');background-size:cover;background-position:center;min-height:500px;width:100%;\">\n<div style=\"position:absolute;inset:0;background:black;opacity:0.50;\"><\/div>\n<div style=\"position:relative;width:92%;max-width:1180px;margin:0 auto;padding:62px 0 58px;\">\n<div style=\"position:relative;max-width:820px;padding:32px 34px;\">\n<div style=\"position:absolute;inset:0;background:black;opacity:0.60;border-radius:12px;border-left:5px solid var(--color-accent);\"><\/div>\n<div style=\"position:relative;\">\n<p style=\"margin:0 0 12px;color:lightsteelblue;font-size:12px;font-weight:700;letter-spacing:2px;text-transform:uppercase;\">KONSTRUKCE \u0158EZOV\u00ddCH KOL \u00b7 N\u00c1VRH \u0158ET\u011aZOV\u00c9HO POHONU \u00b7 OV\u011a\u0158EN\u00cd V TER\u00c9NU<\/p>\n<h1 style=\"margin:0 0 18px;color:white !important;font-size:clamp(30px,4.4vw,50px);line-height:1.08;font-weight:800;letter-spacing:-0.5px;\">Jak vypo\u010d\u00edtat pr\u016fm\u011br rozte\u010de \u0159et\u011bzov\u00e9ho kola z rozte\u010de \u0159et\u011bzu a po\u010dtu zub\u016f<\/h1>\n<p style=\"margin:0 0 24px;color:gainsboro;font-size:17px;max-width:720px;\">Calculate pitch diameter from chain pitch and tooth count, then use it for center-distance, chain-speed, wrap, and space checks instead of confusing it with outside diameter.<\/p>\n<div style=\"display:flex;flex-wrap:wrap;gap:10px;margin:0 0 26px;\"><span style=\"border:1px solid lightsteelblue;color:white;padding:6px 10px;border-radius:8px;font-size:12px;\">sprocket pitch diameter<\/span><span style=\"border:1px solid lightsteelblue;color:white;padding:6px 10px;border-radius:8px;font-size:12px;\">rozte\u010d \u0159et\u011bzu<\/span><span style=\"border:1px solid lightsteelblue;color:white;padding:6px 10px;border-radius:8px;font-size:12px;\">number of teeth<\/span><span style=\"border:1px solid lightsteelblue;color:white;padding:6px 10px;border-radius:8px;font-size:12px;\">pitch circle<\/span><\/div>\n<p><a href=\"#contact\" style=\"display:inline-block;background:var(--color-accent);color:white;text-decoration:none;font-weight:700;padding:12px 20px;border-radius:8px;\">\u017d\u00e1dost o technickou podporu Sprocket<\/a><\/div>\n<\/div>\n<\/div>\n<\/header>\n<p><main style=\"width:92%;max-width:1080px;margin:0 auto;padding:42px 0 0;\"><\/p>\n<section style=\"background:var(--color-neutral);border:1px solid gainsboro;border-left:5px solid var(--color-brand);border-bottom:3px solid var(--color-accent);border-radius:8px;padding:24px 26px;margin:0 0 28px;\">\n<p style=\"margin:0 0 6px;color:var(--color-muted);font-size:11px;font-weight:700;letter-spacing:2px;text-transform:uppercase;\">Rozsah in\u017een\u00fdrstv\u00ed<\/p>\n<h2 style=\"margin:0 0 18px;color:var(--color-brand) !important;font-size:27px;line-height:1.25;border-left:5px solid var(--color-brand);border-bottom:2px solid var(--color-accent);padding:9px 14px;background:var(--color-neutral);\">Engineering Calculation Snapshot: Sprocket pitch diameter calculation<\/h2>\n<p >Calculate pitch diameter from chain pitch and tooth count, then use it for center-distance, chain-speed, wrap, and space checks instead of confusing it with outside diameter. This article concentrates on sprocket pitch diameter, chain pitch, number of teeth, pitch circle, outside diameter, and sprocket geometry as field-verifiable decision inputs.<\/p>\n<p >For sprocket pitch diameter calculation, keep chain engagement, shaft mounting, operating duty, and maintainability in the same decision record; use the current drawing whenever an exact limit is model-specific.<\/p>\n<\/section>\n<section style=\"margin:0 0 34px;\">\n<div style=\"display:flex;flex-wrap:wrap;gap:20px;\">\n<div style=\"flex:1 1 310px;min-width:0;background:var(--color-brand);color:white;border-radius:8px;padding:22px;\">\n<p style=\"margin:0 0 8px;color:lightsteelblue;font-size:11px;font-weight:700;letter-spacing:2px;text-transform:uppercase;\">Referen\u010dn\u00ed \u010d\u00edslo pole<\/p>\n<dl >\n<dt style=\"font-weight:700;color:white;margin-top:10px;\">Rozhran\u00ed \u0159et\u011bz\/zub<\/dt>\n<dd style=\"margin:3px 0 0;color:gainsboro;\">Confirm sprocket pitch diameter, chain pitch, and the mating chain dimensions before changing hardware.<\/dd>\n<dt style=\"font-weight:700;color:white;margin-top:10px;\">Rozhran\u00ed h\u0159\u00eddel\/n\u00e1boj<\/dt>\n<dd style=\"margin:3px 0 0;color:gainsboro;\">Record number of teeth and mounting details that control concentricity, axial position, or load transfer.<\/dd>\n<dt style=\"font-weight:700;color:white;margin-top:10px;\">Provozn\u00ed povinnost<\/dt>\n<dd style=\"margin:3px 0 0;color:gainsboro;\">Document speed, load, shock, starts\/reversals, contamination, washdown, and maintenance access relevant to sprocket pitch diameter calculation.<\/dd>\n<dt style=\"font-weight:700;color:white;margin-top:10px;\">Z\u00e1znam o ov\u011b\u0159en\u00ed<\/dt>\n<dd style=\"margin:3px 0 0;color:gainsboro;\">For sprocket pitch diameter calculation, keep measured values, nominal drawing values, wear observations, and the final replacement requirement distinct in the service record.<\/dd>\n<\/dl>\n<\/div>\n<div style=\"flex:1 1 310px;min-width:0;background:var(--color-surface);border:1px solid gainsboro;border-radius:8px;padding:22px;\">\n<p style=\"margin:0 0 8px;color:var(--color-muted);font-size:11px;font-weight:700;letter-spacing:2px;text-transform:uppercase;\">Princip rozhodov\u00e1n\u00ed<\/p>\n<p style=\"margin:0 0 12px;font-size:19px;font-weight:700;color:var(--color-brand);\">Release sprocket pitch diameter calculation from measured interfaces, not appearance.<\/p>\n<p >For sprocket pitch diameter calculation, check the chain interface, shaft connection, duty, and installed geometry as separate acceptance items, then reconcile them in the final specification.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<nav style=\"background:var(--color-surface);border:1px solid gainsboro;border-radius:8px;padding:20px 24px;margin:0 0 46px;\">\n<p style=\"margin:0 0 12px;color:var(--color-brand);font-size:12px;font-weight:800;letter-spacing:2px;text-transform:uppercase;\">Mapa \u010dl\u00e1nk\u016f<\/p>\n<div style=\"display:flex;flex-wrap:wrap;gap:20px;\">\n<div style=\"flex:1 1 300px;min-width:0;\"><a href=\"#f1\" style=\"display:block;padding:6px 0;color:var(--color-brand);text-decoration:none;\">01 \u00b7 Use the pitch-circle relationship<\/a><a href=\"#f3\" style=\"display:block;padding:6px 0;color:var(--color-brand);text-decoration:none;\">03 \u00b7 Tooth count changes diameter nonlinearly at small values<\/a><a href=\"#f5\" style=\"display:block;padding:6px 0;color:var(--color-brand);text-decoration:none;\">05 \u00b7 Confirm catalog dimensions before machining<\/a><a href=\"#matrix\" style=\"display:block;padding:6px 0;color:var(--color-brand);text-decoration:none;\">M \u00b7 Rozhodovac\u00ed matice<\/a><\/div>\n<div style=\"flex:1 1 300px;min-width:0;\"><a href=\"#f2\" style=\"display:block;padding:6px 0;color:var(--color-brand);text-decoration:none;\">02 \u00b7 Pitch diameter is not outside diameter<\/a><a href=\"#f4\" style=\"display:block;padding:6px 0;color:var(--color-brand);text-decoration:none;\">04 \u00b7 Use pitch diameter for drive layout<\/a><a href=\"#procedure\" style=\"display:block;padding:6px 0;color:var(--color-brand);text-decoration:none;\">P \u00b7 Poln\u00ed postup<\/a><a href=\"#faq\" style=\"display:block;padding:6px 0;color:var(--color-brand);text-decoration:none;\">\u010casto kladen\u00e9 ot\u00e1zky \u00b7 Technick\u00e9 ot\u00e1zky<\/a><\/div>\n<\/div>\n<\/nav>\n<section id=\"f1\" style=\"margin:0 0 46px;\">\n<h2 style=\"margin:0 0 18px;color:var(--color-brand) !important;font-size:27px;line-height:1.25;border-left:5px solid var(--color-brand);border-bottom:2px solid var(--color-accent);padding:9px 14px;background:var(--color-neutral);\">1. Use the pitch-circle relationship<\/h2>\n<figure style=\"margin:0 0 22px;\"><img decoding=\"async\" src=\"https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/06B-1-Simplex-Sprocket-dimension-1.webp\" alt=\"Sprocket pitch diameter calculation - Use the pitch-circle relationship\" style=\"width:100%;max-width:100%;height:auto;border-radius:8px;box-sizing:border-box;display:block;\"><figcaption style=\"font-size:12px;color:var(--color-muted);margin-top:7px;\">Visual reference for use the pitch-circle relationship in sprocket pitch diameter calculation.<\/figcaption><\/figure>\n<p >For a standard roller-chain sprocket, pitch diameter can be calculated as P divided by sin(pi\/N), where P is chain pitch and N is tooth count. Keep angle mode consistent with the formula implementation. Treat use the pitch-circle relationship as a pass\/fail interface: document sprocket pitch diameter, inspect the mating component, and use number of teeth to confirm the final operating fit. For component context, review <a href=\"https:\/\/5speedtransmission.com\/cs\/kategorie-produktu\/sprockets\/\" target=\"_blank\" rel=\"noopener\" style=\"color:var(--color-accent);font-weight:700;text-decoration:none;\">sprocket pitch diameter data<\/a> pokud je propojen\u00e1 produktov\u00e1 \u0159ada relevantn\u00ed pro stejn\u00e9 rozhran\u00ed \u0159et\u011bzov\u00e9ho pohonu.<\/p>\n<p >For commissioning, define how use the pitch-circle relationship will be checked after installation: chain seating, runout, shaft clearance, tooth-side contact, rpm, or loaded inspection as applicable.<\/p>\n<\/section>\n<section id=\"f2\" style=\"margin:0 0 46px;\">\n<h2 style=\"margin:0 0 18px;color:var(--color-brand) !important;font-size:27px;line-height:1.25;border-left:5px solid var(--color-brand);border-bottom:2px solid var(--color-accent);padding:9px 14px;background:var(--color-neutral);\">2. Pitch diameter is not outside diameter<\/h2>\n<p >Pitch diameter is the circle through chain-pin centers when the chain is seated. Tooth tips project outside this circle, so outside diameter is larger and follows the specific tooth form. A useful field note for sprocket pitch diameter calculation pairs chain pitch with pitch circle. That keeps the decision tied to the actual chain drive rather than a visual match.<\/p>\n<p >Verification for sprocket pitch diameter calculation: compare the field condition with nominal data and treat any difference that changes roller seating, shaft support, or service access as a release criterion.<\/p>\n<\/section>\n<section id=\"f3\" style=\"margin:0 0 46px;\">\n<h2 style=\"margin:0 0 18px;color:var(--color-brand) !important;font-size:27px;line-height:1.25;border-left:5px solid var(--color-brand);border-bottom:2px solid var(--color-accent);padding:9px 14px;background:var(--color-neutral);\">3. Tooth count changes diameter nonlinearly at small values<\/h2>\n<p >Increasing tooth count increases pitch diameter. At low tooth counts each additional tooth produces a noticeable change in articulation and package size. For sprocket pitch diameter calculation, use number of teeth as the primary field reference and compare it with outside diameter; resolve any disagreement before releasing the sprocket specification. For component context, review <a href=\"https:\/\/5speedtransmission.com\/cs\/kategorie-produktu\/driving-chains\/\" target=\"_blank\" rel=\"noopener\" style=\"color:var(--color-accent);font-weight:700;text-decoration:none;\">velikosti rozte\u010de v\u00e1le\u010dkov\u00fdch \u0159et\u011bz\u016f<\/a> pokud je propojen\u00e1 produktov\u00e1 \u0159ada relevantn\u00ed pro stejn\u00e9 rozhran\u00ed \u0159et\u011bzov\u00e9ho pohonu.<\/p>\n<p >Use the wear evidence to test tooth count changes diameter nonlinearly at small values: asymmetric polishing, fretting, root impact, or chain climbing should lead to a measurable correction rather than a like-for-like replacement.<\/p>\n<\/section>\n<section id=\"f4\" style=\"margin:0 0 46px;\">\n<h2 style=\"margin:0 0 18px;color:var(--color-brand) !important;font-size:27px;line-height:1.25;border-left:5px solid var(--color-brand);border-bottom:2px solid var(--color-accent);padding:9px 14px;background:var(--color-neutral);\">4. Use pitch diameter for drive layout<\/h2>\n<figure style=\"margin:0 0 22px;\"><img decoding=\"async\" src=\"https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/Steel-Stock-Bore-Sprockets-dimension-1.webp\" alt=\"Sprocket pitch diameter calculation - Use pitch diameter for drive layout\" style=\"width:100%;max-width:100%;height:auto;border-radius:8px;box-sizing:border-box;display:block;\"><figcaption style=\"font-size:12px;color:var(--color-muted);margin-top:7px;\">Visual reference for use pitch diameter for drive layout in sprocket pitch diameter calculation.<\/figcaption><\/figure>\n<p >Pitch circles are the useful geometric references for center distance, chain wrap, and speed relationships. Guard clearance still needs actual outside diameter from the sprocket drawing. The practical check for use pitch diameter for drive layout is to connect the observed condition to pitch circle, then confirm that sprocket geometry does not introduce a second compatibility limit.<\/p>\n<p >For procurement, express use pitch diameter for drive layout as verifiable data: chain standard, measured dimension, drawing reference, material condition, or operating requirement. Do not specify only &#8216;same as old.&#8217;<\/p>\n<\/section>\n<section id=\"f5\" style=\"margin:0 0 46px;\">\n<h2 style=\"margin:0 0 18px;color:var(--color-brand) !important;font-size:27px;line-height:1.25;border-left:5px solid var(--color-brand);border-bottom:2px solid var(--color-accent);padding:9px 14px;background:var(--color-neutral);\">5. Confirm catalog dimensions before machining<\/h2>\n<p >The formula is a design check, not a substitute for the supplier drawing. Tooth profile, caliper diameter, bore limits, and manufacturing tolerances come from the applicable standard or product data. Record the evidence for confirm catalog dimensions before machining beside the measured outside diameter. If sprocket pitch diameter is size- or supplier-dependent, carry the drawing reference into the purchase record.<\/p>\n<p >For commissioning, define how confirm catalog dimensions before machining will be checked after installation: chain seating, runout, shaft clearance, tooth-side contact, rpm, or loaded inspection as applicable.<\/p>\n<\/section>\n<section id=\"procedure\" style=\"margin:0 0 46px;\">\n<h2 style=\"margin:0 0 18px;color:var(--color-brand) !important;font-size:27px;line-height:1.25;border-left:5px solid var(--color-brand);border-bottom:2px solid var(--color-accent);padding:9px 14px;background:var(--color-neutral);\">Postup v\u00fdpo\u010dtu<\/h2>\n<div style=\"background:var(--color-brand);color:white;border-radius:8px;padding:22px 24px;margin:18px 0;\">\n<p style=\"margin:0 0 8px;color:lightsteelblue;font-size:11px;font-weight:700;letter-spacing:2px;text-transform:uppercase;\">Pitch Diameter Formula<\/p>\n<p style=\"margin:0 0 10px;font-size:20px;font-weight:800;\">PD = P \/ sin(\u03c0 \/ N)<\/p>\n<p style=\"margin:0;color:gainsboro;\">Example: P = 0.625 in and N = 20 gives PD \u2248 3.995 in. Use the sprocket drawing for outside diameter, tooth form, and manufacturing tolerances.<\/p>\n<\/div>\n<ol style=\"margin:0;padding-left:22px;\">\n<li style=\"margin:0 0 12px;\"><strong style=\"color:var(--color-brand);\">1. Identify chain pitch.<\/strong> Use the specified chain size or measure multiple chain pitches and convert to consistent units. Before moving on, confirm that pitch circle agrees with the mating chain or shaft interface relevant to this step.<\/li>\n<li style=\"margin:0 0 12px;\"><strong style=\"color:var(--color-brand);\">2. Count sprocket teeth.<\/strong> Use the exact integer tooth count for the sprocket being calculated. Record the result against outside diameter so the next step starts from measured evidence.<\/li>\n<li style=\"margin:0 0 12px;\"><strong style=\"color:var(--color-brand);\">3. Calculate pitch diameter.<\/strong> Evaluate PD = P \/ sin(pi\/N) using the same length unit as P; the result will be in that unit. Use the current machine drawing when sprocket geometry is model-specific, and keep the measured value in the service record.<\/li>\n<li style=\"margin:0 0 12px;\"><strong style=\"color:var(--color-brand);\">4. Check against catalog data.<\/strong> Compare the result with a published pitch diameter for a known sprocket size to catch unit or calculator errors. Before moving on, confirm that sprocket pitch diameter agrees with the mating chain or shaft interface relevant to this step.<\/li>\n<li style=\"margin:0 0 12px;\"><strong style=\"color:var(--color-brand);\">5. Use the value in layout.<\/strong> Apply the pitch diameter when checking center distance, wrap geometry, and approximate space occupied by the pitch circles. Record the result against chain pitch so the next step starts from measured evidence.<\/li>\n<li style=\"margin:0 0 12px;\"><strong style=\"color:var(--color-brand);\">6. Use outside diameter for physical clearance.<\/strong> Obtain actual outside diameter from the standard or supplier drawing before finalizing guards or nearby structure. Use the current machine drawing when number of teeth is model-specific, and keep the measured value in the service record.<\/li>\n<\/ol>\n<p >For sprocket pitch diameter calculation, cross-check adjacent drive interfaces with <a href=\"https:\/\/5speedtransmission.com\/cs\/\" target=\"_blank\" rel=\"noopener\" style=\"color:var(--color-accent);font-weight:700;text-decoration:none;\">pr\u016fmyslov\u00e9 komponenty pro p\u0159enos energie<\/a> p\u0159ed vyd\u00e1n\u00edm z\u00e1znamu o instalaci nebo v\u00fdm\u011bn\u011b.<\/p>\n<\/section>\n<section id=\"matrix\" style=\"margin:0 0 46px;\">\n<h2 style=\"margin:0 0 18px;color:var(--color-brand) !important;font-size:27px;line-height:1.25;border-left:5px solid var(--color-brand);border-bottom:2px solid var(--color-accent);padding:9px 14px;background:var(--color-neutral);\">Rozhodovac\u00ed tabulka<\/h2>\n<div style=\"overflow-x:auto;max-width:100%;\">\n<table style=\"width:100%;min-width:680px;border-collapse:collapse;\">\n<caption style=\"text-align:left;font-weight:700;color:var(--color-brand);padding:0 0 10px;\">Sprocket pitch diameter calculation \u2014 field decision matrix<\/caption>\n<thead>\n<tr style=\"background:var(--color-brand);\">\n<th scope=\"col\" style=\"padding:11px 12px;text-align:left;color:white;\">Faktor<\/th>\n<th scope=\"col\" style=\"padding:11px 12px;text-align:left;color:white;border-bottom:3px solid var(--color-accent);\">Co ov\u011b\u0159it<\/th>\n<th scope=\"col\" style=\"padding:11px 12px;text-align:left;color:white;\">Logika uvoln\u011bn\u00ed<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background:var(--color-surface);\">\n<th scope=\"row\" style=\"padding:10px 12px;text-align:left;\">Use the pitch-circle relationship<\/th>\n<td style=\"padding:10px 12px;\">For a standard roller-chain sprocket, pitch diameter can be calculated as P divided by sin(pi\/N), where P is chain pitch and N is tooth count<\/td>\n<td style=\"padding:10px 12px;\">Accept use the pitch-circle relationship when field evidence matches the controlled requirement.<\/td>\n<\/tr>\n<tr style=\"background:var(--color-neutral);\">\n<th scope=\"row\" style=\"padding:10px 12px;text-align:left;\">Pitch diameter is not outside diameter<\/th>\n<td style=\"padding:10px 12px;\">Pitch diameter is the circle through chain-pin centers when the chain is seated<\/td>\n<td style=\"padding:10px 12px;\">Reconstruct nominal pitch diameter is not outside diameter if wear has obscured the original geometry.<\/td>\n<\/tr>\n<tr style=\"background:var(--color-surface);\">\n<th scope=\"row\" style=\"padding:10px 12px;text-align:left;\">Tooth count changes diameter nonlinearly at small values<\/th>\n<td style=\"padding:10px 12px;\">Increasing tooth count increases pitch diameter<\/td>\n<td style=\"padding:10px 12px;\">Use the current supplier or machine limit for model-specific tooth count changes diameter nonlinearly at small values.<\/td>\n<\/tr>\n<tr style=\"background:var(--color-neutral);\">\n<th scope=\"row\" style=\"padding:10px 12px;text-align:left;\">Use pitch diameter for drive layout<\/th>\n<td style=\"padding:10px 12px;\">Pitch circles are the useful geometric references for center distance, chain wrap, and speed relationships<\/td>\n<td style=\"padding:10px 12px;\">Record use pitch diameter for drive layout as a release check before installation or restart.<\/td>\n<\/tr>\n<tr style=\"background:var(--color-surface);\">\n<th scope=\"row\" style=\"padding:10px 12px;text-align:left;\">Confirm catalog dimensions before machining<\/th>\n<td style=\"padding:10px 12px;\">The formula is a design check, not a substitute for the supplier drawing<\/td>\n<td style=\"padding:10px 12px;\">Correct the system cause linked to confirm catalog dimensions before machining before fitting new hardware.<\/td>\n<\/tr>\n<\/tbody>\n<tfoot>\n<tr style=\"background:var(--color-brand);\">\n<td colspan=\"3\" style=\"padding:11px 12px;color:white;\">Pro kone\u010dn\u00e9 schv\u00e1len\u00ed pou\u017eijte nam\u011b\u0159en\u00e1 data stroje a aktu\u00e1ln\u00ed v\u00fdkres \u0159et\u011bzu\/\u0159et\u011bzov\u00e9ho kola; limity specifick\u00e9 pro dan\u00fd model nejsou zam\u011bniteln\u00e9.<\/td>\n<\/tr>\n<\/tfoot>\n<\/table>\n<\/div>\n<\/section>\n<section style=\"margin:0 0 46px;\">\n<h2 style=\"margin:0 0 18px;color:var(--color-brand) !important;font-size:27px;line-height:1.25;border-left:5px solid var(--color-brand);border-bottom:2px solid var(--color-accent);padding:9px 14px;background:var(--color-neutral);\">Ov\u011b\u0159ovac\u00ed kontroly<\/h2>\n<div style=\"display:flex;flex-wrap:wrap;gap:20px;\">\n<div style=\"flex:1 1 230px;min-width:0;border:1px solid gainsboro;border-radius:8px;padding:17px;background:var(--color-neutral);\">\n<p style=\"margin:0 0 6px;color:var(--color-warning);font-size:11px;font-weight:800;letter-spacing:1px;text-transform:uppercase;\">Vyhn\u011bte se 01<\/p>\n<p >Using outside diameter in the pitch-diameter formula. Document the corrective requirement specifically for sprocket pitch diameter calculation before the part is released.<\/p>\n<\/div>\n<div style=\"flex:1 1 230px;min-width:0;border:1px solid gainsboro;border-radius:8px;padding:17px;background:var(--color-surface);\">\n<p style=\"margin:0 0 6px;color:var(--color-warning);font-size:11px;font-weight:800;letter-spacing:1px;text-transform:uppercase;\">Vyhn\u011bte se 02<\/p>\n<p >Entering degrees incorrectly when the calculator expects radians. Document the corrective requirement specifically for sprocket pitch diameter calculation before the part is released.<\/p>\n<\/div>\n<div style=\"flex:1 1 230px;min-width:0;border:1px solid gainsboro;border-radius:8px;padding:17px;background:var(--color-neutral);\">\n<p style=\"margin:0 0 6px;color:var(--color-warning);font-size:11px;font-weight:800;letter-spacing:1px;text-transform:uppercase;\">Vyhn\u011bte se 03<\/p>\n<p >Mixing millimeters and inches in the same calculation. Document the corrective requirement specifically for sprocket pitch diameter calculation before the part is released.<\/p>\n<\/div>\n<div style=\"flex:1 1 230px;min-width:0;border:1px solid gainsboro;border-radius:8px;padding:17px;background:var(--color-surface);\">\n<p style=\"margin:0 0 6px;color:var(--color-warning);font-size:11px;font-weight:800;letter-spacing:1px;text-transform:uppercase;\">Vyhn\u011bte se 04<\/p>\n<p >Using calculated pitch diameter as a manufacturing drawing without the full tooth-form standard. Document the corrective requirement specifically for sprocket pitch diameter calculation before the part is released.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<section style=\"margin:0 0 42px;background:var(--color-neutral);border-left:5px solid var(--color-warning);border-radius:8px;padding:18px 20px;\">\n<p ><strong style=\"color:var(--color-brand);\">K\u0159\u00ed\u017eov\u00e1 kontrola konfigurace:<\/strong> pou\u017eijte toto <a href=\"https:\/\/sprocket-chain.net\/product-category\/sprocket\/\" target=\"_blank\" rel=\"noopener\" style=\"color:var(--color-accent);font-weight:700;text-decoration:none;\">sprocket dimensional reference<\/a> only to compare common construction terminology for sprocket pitch diameter calculation; release the part from the actual chain, shaft, and controlled drawing.<\/p>\n<\/section>\n<div style=\"text-align:center;margin:0 0 44px;\"><a href=\"#contact\" style=\"display:inline-block;background:var(--color-accent);color:white;text-decoration:none;font-weight:700;padding:12px 20px;border-radius:8px;\">Ode\u0161lete podrobnosti o sv\u00e9 \u017e\u00e1dosti<\/a><\/div>\n<section id=\"faq\" style=\"margin:0 0 50px;\">\n<h2 style=\"margin:0 0 18px;color:white !important;font-size:27px;line-height:1.25;border-left:5px solid var(--color-accent);border-bottom:2px solid var(--color-accent);padding:11px 15px;background:var(--color-brand);\">FAQ: Sprocket pitch diameter calculation \u2014 practical engineering questions<\/h2>\n<details style=\"background:var(--color-neutral);border-left:4px solid var(--color-accent);border-radius:8px;padding:14px 16px;margin:0 0 10px;\">\n<summary style=\"color:var(--color-brand);font-weight:700;cursor:pointer;\">What is the formula for sprocket pitch diameter?<\/summary>\n<p >For standard roller-chain geometry, pitch diameter is P divided by sin(pi\/N), where P is chain pitch and N is the number of sprocket teeth. Use consistent units.<\/p>\n<\/details>\n<details style=\"background:var(--color-neutral);border-left:4px solid var(--color-accent);border-radius:8px;padding:14px 16px;margin:0 0 10px;\">\n<summary style=\"color:var(--color-brand);font-weight:700;cursor:pointer;\">Is sprocket pitch diameter the same as outside diameter?<\/summary>\n<p >No. Pitch diameter passes through the chain pin centers in the theoretical seated position. Outside diameter is measured over tooth tips and is larger.<\/p>\n<\/details>\n<details style=\"background:var(--color-neutral);border-left:4px solid var(--color-accent);border-radius:8px;padding:14px 16px;margin:0 0 10px;\">\n<summary style=\"color:var(--color-brand);font-weight:700;cursor:pointer;\">How do I calculate the pitch diameter of a 20-tooth sprocket?<\/summary>\n<p >Insert the chain pitch and N=20 into PD=P\/sin(pi\/20). The numeric result depends on the chain pitch, so the same tooth count gives different diameters for different chain sizes.<\/p>\n<\/details>\n<details style=\"background:var(--color-neutral);border-left:4px solid var(--color-accent);border-radius:8px;padding:14px 16px;margin:0 0 10px;\">\n<summary style=\"color:var(--color-brand);font-weight:700;cursor:pointer;\">Why do sprocket catalogs list caliper diameter as well as pitch diameter?<\/summary>\n<p >Caliper diameter is a practical inspection dimension measured across tooth valleys or related reference points. It helps identify and inspect the manufactured sprocket without directly accessing the theoretical pitch circle.<\/p>\n<\/details>\n<details style=\"background:var(--color-neutral);border-left:4px solid var(--color-accent);border-radius:8px;padding:14px 16px;margin:0 0 10px;\">\n<summary style=\"color:var(--color-brand);font-weight:700;cursor:pointer;\">Can I use pitch diameter to set center distance?<\/summary>\n<p >Yes, pitch-circle geometry is fundamental to chain-drive layout, but final center distance also depends on chain length in pitches, tooth counts, adjustment range, and required chain wrap.<\/p>\n<\/details>\n<details style=\"background:var(--color-neutral);border-left:4px solid var(--color-accent);border-radius:8px;padding:14px 16px;margin:0 0 10px;\">\n<summary style=\"color:var(--color-brand);font-weight:700;cursor:pointer;\">Should I machine a sprocket from pitch diameter alone?<\/summary>\n<p >No. Manufacturing needs the full tooth profile, roller seating geometry, width, tolerances, material, bore and hub details. Use the applicable standard or approved drawing.<\/p>\n<\/details>\n<\/section>\n<section style=\"position:relative;overflow:hidden;border-radius:12px;background:var(--color-brand);background-image:url('https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/ever-power-measuring-equipment-1.webp');background-size:cover;background-position:center;margin:0 0 24px;\">\n<div style=\"position:absolute;inset:0;background:black;opacity:0.70;\"><\/div>\n<div style=\"position:relative;padding:42px 30px;text-align:center;\">\n<p style=\"margin:0 0 8px;color:lightsteelblue;font-size:11px;font-weight:700;letter-spacing:2px;text-transform:uppercase;\">Podpora in\u017een\u00fdrstv\u00ed Sprocket<\/p>\n<h2 style=\"margin:0 0 18px;color:white !important;font-size:27px;line-height:1.25;border-left:5px solid var(--color-accent);border-bottom:2px solid var(--color-accent);padding:11px 15px;background:var(--color-brand);\">Need to verify Sprocket pitch diameter calculation before ordering?<\/h2>\n<p style=\"margin:0 auto 22px;color:gainsboro;max-width:720px;\">For sprocket pitch diameter calculation, send chain designation or measurements, tooth count, shaft and hub data, duty, environment, and relevant wear photos so the tooth interface, mounting, material, and service constraints can be checked before release.<\/p>\n<p><a href=\"#contact\" style=\"display:inline-block;background:var(--color-accent);color:white;text-decoration:none;font-weight:700;padding:12px 20px;border-radius:8px;\">Zkontrolujte si aplikaci ozuben\u00e9ho kola<\/a><\/div>\n<\/section>\n<div style=\"border-top:1px solid gainsboro;padding:12px 0 34px;text-align:right;\"><span style=\"font-size:13px;color:var(--color-muted);font-style:italic;\">Cxm.<\/span><\/div>\n<p><\/main><\/article>","protected":false},"excerpt":{"rendered":"<p>SPROCKET ENGINEERING \u00b7 CHAIN DRIVE DESIGN \u00b7 FIELD VERIFICATION How to Calculate Sprocket Pitch Diameter from Chain Pitch and Tooth Count Calculate pitch diameter from chain pitch and tooth count, then use it for center-distance, chain-speed, wrap, and space checks instead of confusing it with outside diameter. sprocket pitch diameterchain pitchnumber of teethpitch circle Request [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[26],"tags":[],"class_list":["post-354","post","type-post","status-publish","format-standard","hentry","category-speed-transmission"],"_links":{"self":[{"href":"https:\/\/5speedtransmission.com\/cs\/wp-json\/wp\/v2\/posts\/354","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/5speedtransmission.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/5speedtransmission.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/5speedtransmission.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/5speedtransmission.com\/cs\/wp-json\/wp\/v2\/comments?post=354"}],"version-history":[{"count":0,"href":"https:\/\/5speedtransmission.com\/cs\/wp-json\/wp\/v2\/posts\/354\/revisions"}],"wp:attachment":[{"href":"https:\/\/5speedtransmission.com\/cs\/wp-json\/wp\/v2\/media?parent=354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/5speedtransmission.com\/cs\/wp-json\/wp\/v2\/categories?post=354"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/5speedtransmission.com\/cs\/wp-json\/wp\/v2\/tags?post=354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}