{"id":343,"date":"2026-08-14T01:30:44","date_gmt":"2026-08-14T01:30:44","guid":{"rendered":"https:\/\/5speedtransmission.com\/stock-bore-vs-finished-bore-vs-qd-vs-taper-lock-sprockets-which-mounting-system-should-you-use\/"},"modified":"2026-08-14T01:30:44","modified_gmt":"2026-08-14T01:30:44","slug":"stock-bore-vs-finished-bore-vs-qd-vs-taper-lock-sprockets-which-mounting-system-should-you-use","status":"publish","type":"post","link":"https:\/\/5speedtransmission.com\/ko\/stock-bore-vs-finished-bore-vs-qd-vs-taper-lock-sprockets-which-mounting-system-should-you-use\/","title":{"rendered":"\uc2a4\ud1a1 \ubcf4\uc5b4 vs \uac00\uacf5 \ubcf4\uc5b4 vs \ud035 \ub9b4\ub9ac\uc2a4 vs \ud14c\uc774\ud37c \ub77d \uc2a4\ud504\ub85c\ud0b7: \uc5b4\ub5a4 \uc7a5\ucc29 \uc2dc\uc2a4\ud15c\uc744 \uc0ac\uc6a9\ud574\uc57c \ud560\uae4c\uc694?"},"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;\">\uc2a4\ud504\ub85c\ud0b7 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \u00b7 \uccb4\uc778 \uad6c\ub3d9 \uc124\uacc4 \u00b7 \ud604\uc7a5 \uac80\uc99d<\/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;\">\uc2a4\ud1a1 \ubcf4\uc5b4 vs \uac00\uacf5 \ubcf4\uc5b4 vs \ud035 \ub9b4\ub9ac\uc2a4 vs \ud14c\uc774\ud37c \ub77d \uc2a4\ud504\ub85c\ud0b7: \uc5b4\ub5a4 \uc7a5\ucc29 \uc2dc\uc2a4\ud15c\uc744 \uc0ac\uc6a9\ud574\uc57c \ud560\uae4c\uc694?<\/h1>\n<p style=\"margin:0 0 24px;color:gainsboro;font-size:17px;max-width:720px;\">Select the mounting system by balancing machining, shaft interchangeability, concentricity, installation access, removal time, and inventory strategy.<\/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;\">stock bore sprocket<\/span><span style=\"border:1px solid lightsteelblue;color:white;padding:6px 10px;border-radius:8px;font-size:12px;\">\uc644\uc131\ub41c \ubcf4\uc5b4 \uc2a4\ud504\ub85c\ud0b7<\/span><span style=\"border:1px solid lightsteelblue;color:white;padding:6px 10px;border-radius:8px;font-size:12px;\">QD \ubd80\uc2f1 \uc2a4\ud504\ub85c\ud0b7<\/span><span style=\"border:1px solid lightsteelblue;color:white;padding:6px 10px;border-radius:8px;font-size:12px;\">\ud14c\uc774\ud37c\ub77d \uc2a4\ud504\ub85c\ud0b7<\/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;\">\uc2a4\ud504\ub85c\ud0b7 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \uc9c0\uc6d0\uc744 \uc694\uccad\ud569\ub2c8\ub2e4.<\/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;\">\uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \ubc94\uc704<\/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);\">Selection Snapshot: Stock bore, finished bore, QD, and Taper-Lock sprockets<\/h2>\n<p >Select the mounting system by balancing machining, shaft interchangeability, concentricity, installation access, removal time, and inventory strategy. This article concentrates on stock bore sprocket, finished bore sprocket, QD bushing sprocket, Taper-Lock sprocket, keyway, and concentric mounting as field-verifiable decision inputs.<\/p>\n<p >For stock bore, finished bore, qd, and taper-lock sprockets, 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;\">\ud544\ub4dc \ucc38\uc870<\/p>\n<dl >\n<dt style=\"font-weight:700;color:white;margin-top:10px;\">\uccb4\uc778\/\ud1b1\ub2c8 \uc778\ud130\ud398\uc774\uc2a4<\/dt>\n<dd style=\"margin:3px 0 0;color:gainsboro;\">Confirm stock bore sprocket, finished bore sprocket, and the mating chain dimensions before changing hardware.<\/dd>\n<dt style=\"font-weight:700;color:white;margin-top:10px;\">\uc0e4\ud504\ud2b8\/\ud5c8\ube0c \uc778\ud130\ud398\uc774\uc2a4<\/dt>\n<dd style=\"margin:3px 0 0;color:gainsboro;\">Record QD bushing sprocket and mounting details that control concentricity, axial position, or load transfer.<\/dd>\n<dt style=\"font-weight:700;color:white;margin-top:10px;\">\uc6b4\uc601 \uc5c5\ubb34<\/dt>\n<dd style=\"margin:3px 0 0;color:gainsboro;\">Document speed, load, shock, starts\/reversals, contamination, washdown, and maintenance access relevant to stock bore, finished bore, qd, and taper-lock sprockets.<\/dd>\n<dt style=\"font-weight:700;color:white;margin-top:10px;\">\uac80\uc99d \uae30\ub85d<\/dt>\n<dd style=\"margin:3px 0 0;color:gainsboro;\">For stock bore, finished bore, qd, and taper-lock sprockets, 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;\">\uacb0\uc815 \uc6d0\uce59<\/p>\n<p style=\"margin:0 0 12px;font-size:19px;font-weight:700;color:var(--color-brand);\">Release stock bore, finished bore, qd, and taper-lock sprockets from measured interfaces, not appearance.<\/p>\n<p >For stock bore, finished bore, qd, and taper-lock sprockets, 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;\">\uae30\uc0ac \uc9c0\ub3c4<\/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 Stock bore<\/a><a href=\"#f3\" style=\"display:block;padding:6px 0;color:var(--color-brand);text-decoration:none;\">03 \u00b7 QD bushing<\/a><a href=\"#f5\" style=\"display:block;padding:6px 0;color:var(--color-brand);text-decoration:none;\">05 \u00b7 Lifecycle and inventory<\/a><a href=\"#matrix\" style=\"display:block;padding:6px 0;color:var(--color-brand);text-decoration:none;\">M \u00b7 \uc758\uc0ac\uacb0\uc815 \ub9e4\ud2b8\ub9ad\uc2a4<\/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 Finished bore<\/a><a href=\"#f4\" style=\"display:block;padding:6px 0;color:var(--color-brand);text-decoration:none;\">04 \u00b7 Taper-Lock bushing<\/a><a href=\"#procedure\" style=\"display:block;padding:6px 0;color:var(--color-brand);text-decoration:none;\">P \u00b7 \ud604\uc7a5 \uc808\ucc28<\/a><a href=\"#faq\" style=\"display:block;padding:6px 0;color:var(--color-brand);text-decoration:none;\">\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38 \u00b7 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \uad00\ub828 \uc9c8\ubb38<\/a><\/div>\n<\/div>\n<\/nav>\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);\">\ube44\uad50 \ud589\ub82c<\/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;\">Stock bore, finished bore, QD, and Taper-Lock sprockets \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;\">\uc694\uc778<\/th>\n<th scope=\"col\" style=\"padding:11px 12px;text-align:left;color:white;border-bottom:3px solid var(--color-accent);\">\ubb34\uc5c7\uc744 \ud655\uc778\ud574\uc57c \ud560\uae4c\uc694?<\/th>\n<th scope=\"col\" style=\"padding:11px 12px;text-align:left;color:white;\">\ub9b4\ub9ac\uc2a4 \ub85c\uc9c1<\/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;\">Stock bore<\/th>\n<td style=\"padding:10px 12px;\">A stock-bore sprocket leaves the final shaft interface for machining<\/td>\n<td style=\"padding:10px 12px;\">Correct the system cause linked to stock bore before fitting new hardware.<\/td>\n<\/tr>\n<tr style=\"background:var(--color-neutral);\">\n<th scope=\"row\" style=\"padding:10px 12px;text-align:left;\">Finished bore<\/th>\n<td style=\"padding:10px 12px;\">A finished-bore sprocket arrives machined to a specified shaft size, typically with a keyway and retention features<\/td>\n<td style=\"padding:10px 12px;\">Accept finished bore when field evidence matches the controlled requirement.<\/td>\n<\/tr>\n<tr style=\"background:var(--color-surface);\">\n<th scope=\"row\" style=\"padding:10px 12px;text-align:left;\">QD \ubd80\uc2f1<\/th>\n<td style=\"padding:10px 12px;\">A QD system uses a split tapered bushing drawn into a mating tapered hub<\/td>\n<td style=\"padding:10px 12px;\">Reconstruct nominal qd bushing if wear has obscured the original geometry.<\/td>\n<\/tr>\n<tr style=\"background:var(--color-neutral);\">\n<th scope=\"row\" style=\"padding:10px 12px;text-align:left;\">Taper-Lock bushing<\/th>\n<td style=\"padding:10px 12px;\">Taper-Lock also uses a split taper, but its geometry, screw arrangement, and bushing series are not interchangeable with QD<\/td>\n<td style=\"padding:10px 12px;\">Use the current supplier or machine limit for model-specific taper-lock bushing.<\/td>\n<\/tr>\n<tr style=\"background:var(--color-surface);\">\n<th scope=\"row\" style=\"padding:10px 12px;text-align:left;\">Lifecycle and inventory<\/th>\n<td style=\"padding:10px 12px;\">A fixed finished bore can be simplest for a stable machine fleet, while interchangeable bushings can reduce the number of complete sprockets carried for several shaft sizes<\/td>\n<td style=\"padding:10px 12px;\">Record lifecycle and inventory as a release check before installation or restart.<\/td>\n<\/tr>\n<\/tbody>\n<tfoot>\n<tr style=\"background:var(--color-brand);\">\n<td colspan=\"3\" style=\"padding:11px 12px;color:white;\">\ucd5c\uc885 \uc2b9\uc778\uc744 \uc704\ud574\uc11c\ub294 \uce21\uc815\ub41c \uae30\uacc4 \ub370\uc774\ud130\uc640 \ucd5c\uc2e0 \uccb4\uc778\/\uc2a4\ud504\ub85c\ud0b7 \ub3c4\uba74\uc744 \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624. \ubaa8\ub378\ubcc4 \ud5c8\uc6a9 \uc624\ucc28\ub294 \uc11c\ub85c \ud638\ud658\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/td>\n<\/tr>\n<\/tfoot>\n<\/table>\n<\/div>\n<\/section>\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. Stock bore<\/h2>\n<figure style=\"margin:0 0 22px;\"><img decoding=\"async\" src=\"https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/Sprockets-with-QD-Bushings.webp\" alt=\"Stock bore, finished bore, QD, and Taper-Lock sprockets - Stock bore\" 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 stock bore in stock bore, finished bore, qd, and taper-lock sprockets.<\/figcaption><\/figure>\n<p >A stock-bore sprocket leaves the final shaft interface for machining. It is useful when a shop controls the bore and keyway locally, but the sprocket is not ready to mount until those operations are completed and checked for concentricity. For stock bore, finished bore, qd, and taper-lock sprockets, use stock bore sprocket as the primary field reference and compare it with QD bushing sprocket; resolve any disagreement before releasing the sprocket specification. For component context, review <a href=\"https:\/\/5speedtransmission.com\/ko\/product-category\/sprockets\/\" target=\"_blank\" rel=\"noopener\" style=\"color:var(--color-accent);font-weight:700;text-decoration:none;\">QD and Taper-Lock sprockets<\/a> \uc5f0\uacb0\ub41c \uc81c\ud488\uad70\uc774 \ub3d9\uc77c\ud55c \uccb4\uc778 \uad6c\ub3d9 \uc778\ud130\ud398\uc774\uc2a4\uc640 \uad00\ub828\ub41c \uacbd\uc6b0.<\/p>\n<p >Verification for stock bore, finished bore, qd, and taper-lock sprockets: 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=\"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. Finished bore<\/h2>\n<p >A finished-bore sprocket arrives machined to a specified shaft size, typically with a keyway and retention features. It reduces local machining work but ties the part more closely to one shaft diameter. The practical check for finished bore is to connect the observed condition to finished bore sprocket, then confirm that Taper-Lock sprocket does not introduce a second compatibility limit.<\/p>\n<p >Use the wear evidence to test finished bore: 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=\"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. QD bushing<\/h2>\n<p >A QD system uses a split tapered bushing drawn into a mating tapered hub. It is valuable when shaft-size flexibility and removal are important, but the bushing and sprocket must be the matching QD series and installed with the published screw sequence. Record the evidence for qd bushing beside the measured QD bushing sprocket. If keyway is size- or supplier-dependent, carry the drawing reference into the purchase record. For component context, review <a href=\"https:\/\/5speedtransmission.com\/ko\/product-category\/driving-chains\/\" target=\"_blank\" rel=\"noopener\" style=\"color:var(--color-accent);font-weight:700;text-decoration:none;\">\ub864\ub7ec \uccb4\uc778 \uad6c\ub3d9 \ubd80\ud488<\/a> \uc5f0\uacb0\ub41c \uc81c\ud488\uad70\uc774 \ub3d9\uc77c\ud55c \uccb4\uc778 \uad6c\ub3d9 \uc778\ud130\ud398\uc774\uc2a4\uc640 \uad00\ub828\ub41c \uacbd\uc6b0.<\/p>\n<p >For procurement, express qd bushing 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=\"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. Taper-Lock bushing<\/h2>\n<figure style=\"margin:0 0 22px;\"><img decoding=\"async\" src=\"https:\/\/5speedtransmission.com\/wp-content\/uploads\/2026\/07\/taper-bore-sprocket-1.webp\" alt=\"Stock bore, finished bore, QD, and Taper-Lock sprockets - Taper-Lock bushing\" 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 taper-lock bushing in stock bore, finished bore, qd, and taper-lock sprockets.<\/figcaption><\/figure>\n<p >Taper-Lock also uses a split taper, but its geometry, screw arrangement, and bushing series are not interchangeable with QD. Treat it as a distinct mounting system and follow the selected manufacturer&#8217;s installation and removal instructions. Treat taper-lock bushing as a pass\/fail interface: document Taper-Lock sprocket, inspect the mating component, and use concentric mounting to confirm the final operating fit.<\/p>\n<p >For commissioning, define how taper-lock bushing 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=\"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. Lifecycle and inventory<\/h2>\n<p >A fixed finished bore can be simplest for a stable machine fleet, while interchangeable bushings can reduce the number of complete sprockets carried for several shaft sizes. The economic choice depends on local machining, downtime, and spare-parts policy. A useful field note for stock bore, finished bore, qd, and taper-lock sprockets pairs keyway with stock bore sprocket. That keeps the decision tied to the actual chain drive rather than a visual match.<\/p>\n<p >Verification for stock bore, finished bore, qd, and taper-lock sprockets: 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=\"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);\">\uc120\ubc1c \uc808\ucc28<\/h2>\n<ol style=\"margin:0;padding-left:22px;\">\n<li style=\"margin:0 0 12px;\"><strong style=\"color:var(--color-brand);\">1. Confirm the shaft.<\/strong> Measure shaft diameter, keyway, shoulder position, usable length, surface condition, and any evidence of fretting or previous bushing damage. Photograph the setup when useful and identify the reference surfaces used to establish Taper-Lock sprocket.<\/li>\n<li style=\"margin:0 0 12px;\"><strong style=\"color:var(--color-brand);\">2. Confirm the sprocket hub.<\/strong> Check the exact hub series, maximum bore, bushing number if applicable, and length through bore on the supplier drawing. If the observation changes keyway, stop and update the replacement specification before continuing.<\/li>\n<li style=\"margin:0 0 12px;\"><strong style=\"color:var(--color-brand);\">3. Assess field access.<\/strong> Verify that installation screws, removal holes, keys, and puller or wrench access remain reachable after guards and bearings are in place. Repeat or rotate the check when wear could bias concentric mounting; the goal is nominal geometry, not one convenient reading.<\/li>\n<li style=\"margin:0 0 12px;\"><strong style=\"color:var(--color-brand);\">4. Decide machining responsibility.<\/strong> If using stock bore, define who will finish-bore, key, deburr, and inspect runout before the sprocket reaches the machine. Photograph the setup when useful and identify the reference surfaces used to establish stock bore sprocket.<\/li>\n<li style=\"margin:0 0 12px;\"><strong style=\"color:var(--color-brand);\">5. Plan installation verification.<\/strong> Include a radial-runout and axial-face check after mounting, because a nominally correct bore system can still seat poorly on a damaged shaft. If the observation changes finished bore sprocket, stop and update the replacement specification before continuing.<\/li>\n<li style=\"margin:0 0 12px;\"><strong style=\"color:var(--color-brand);\">6. Plan the next replacement.<\/strong> Decide whether the spare should be a complete finished-bore assembly or a common sprocket plus multiple bushings, and label the stored parts by shaft location. Repeat or rotate the check when wear could bias QD bushing sprocket; the goal is nominal geometry, not one convenient reading.<\/li>\n<\/ol>\n<p >For stock bore, finished bore, qd, and taper-lock sprockets, cross-check adjacent drive interfaces with <a href=\"https:\/\/5speedtransmission.com\/ko\/\" target=\"_blank\" rel=\"noopener\" style=\"color:var(--color-accent);font-weight:700;text-decoration:none;\">industrial power transmission products<\/a> \uc124\uce58 \ub610\ub294 \uad50\uccb4 \uae30\ub85d\uc744 \uac8c\uc2dc\ud558\uae30 \uc804\uc5d0.<\/p>\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);\">\ucd5c\uc885 \uc120\ud0dd \ud655\uc778<\/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;\">01\uc744 \ud53c\ud558\uc138\uc694<\/p>\n<p >Buying a stock-bore sprocket as if it were ready to install. Document the corrective requirement specifically for stock bore, finished bore, qd, and taper-lock sprockets 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;\">02\ub97c \ud53c\ud558\uc138\uc694<\/p>\n<p >Mixing QD and Taper-Lock bushings because their outside appearance is similar. Document the corrective requirement specifically for stock bore, finished bore, qd, and taper-lock sprockets 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;\">03\uc744 \ud53c\ud558\uc138\uc694<\/p>\n<p >Reusing a damaged key or fretted shaft under a new bushing. Document the corrective requirement specifically for stock bore, finished bore, qd, and taper-lock sprockets 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;\">04\ub97c \ud53c\ud558\uc138\uc694<\/p>\n<p >Applying remembered torque values instead of the bushing manufacturer&#x27;s current data. Document the corrective requirement specifically for stock bore, finished bore, qd, and taper-lock sprockets 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);\">\uad6c\uc131 \uad50\ucc28 \ud655\uc778:<\/strong> \uc774\uac83\uc744 \uc0ac\uc6a9\ud558\uc138\uc694 <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 mounting options<\/a> only to compare common construction terminology for stock bore, finished bore, qd, and taper-lock sprockets; 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;\">\uc9c0\uc6d0\uc11c \uc138\ubd80 \uc815\ubcf4\ub97c \ubcf4\ub0b4\uc8fc\uc138\uc694<\/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: Stock bore, finished bore, QD, and Taper-Lock sprockets \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;\">Stock bore vs finished bore sprocket: what is the practical difference?<\/summary>\n<p >Stock bore leaves the final bore and keyway machining to the user or machine shop. Finished bore is supplied at the target shaft size with the required shaft-interface features. The choice is mainly about machining control, lead time, and whether one shaft size is fixed.<\/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;\">QD vs Taper-Lock sprocket: are the bushings interchangeable?<\/summary>\n<p >No. They are different tapered bushing systems with different hub geometry and screw arrangements. Use the bushing series specified for the sprocket and follow that manufacturer&#x27;s installation and removal procedure.<\/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;\">Which sprocket mounting system is easiest to remove during maintenance?<\/summary>\n<p >Interchangeable taper-bushing systems are often attractive where field removal matters, but access to screws and removal holes must be available. A finished-bore sprocket can also be easy to remove if the shaft fit, key, and axial retention are service-friendly.<\/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;\">Do I still need to check runout on a QD or Taper-Lock sprocket?<\/summary>\n<p >Yes. A taper bushing improves repeatable mounting only when the shaft, bore, taper, and seating are clean and undamaged. Indicate radial and axial runout after assembly and compare with the equipment or sprocket specification.<\/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;\">When is a stock-bore sprocket the better choice?<\/summary>\n<p >Choose stock bore when local machining capability is strong, the shaft size is unusual, or the same sprocket blank must be adapted to several shaft interfaces. The machining drawing should control bore, keyway, concentricity, and hub wall thickness.<\/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;\">What information do I need to order a finished-bore or bushed sprocket?<\/summary>\n<p >State chain size, tooth count, strand count, shaft diameter, keyway, hub or bushing system, bushing series, material, axial location, and any maximum outside diameter or length-through-bore limit.<\/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\/Finished-Bore-Sprockets-dimension-1-1.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;\">\uc2a4\ud504\ub85c\ud0b7 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \uc9c0\uc6d0<\/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 Stock bore, finished bore, QD, and Taper-Lock sprockets before ordering?<\/h2>\n<p style=\"margin:0 auto 22px;color:gainsboro;max-width:720px;\">For stock bore, finished bore, qd, and taper-lock sprockets, 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;\">\uccb4\uc778 \ubc0f \uc2a4\ud504\ub85c\ud0b7 \uc9c0\uc6d0\uc744 \uc694\uccad\ud569\ub2c8\ub2e4.<\/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 Stock Bore vs Finished Bore vs QD vs Taper-Lock Sprockets: Which Mounting System Should You Use? Select the mounting system by balancing machining, shaft interchangeability, concentricity, installation access, removal time, and inventory strategy. stock bore sprocketfinished bore sprocketQD bushing sprocketTaper-Lock sprocket Request Sprocket Engineering Support Engineering [&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-343","post","type-post","status-publish","format-standard","hentry","category-speed-transmission"],"_links":{"self":[{"href":"https:\/\/5speedtransmission.com\/ko\/wp-json\/wp\/v2\/posts\/343","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/5speedtransmission.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/5speedtransmission.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/5speedtransmission.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/5speedtransmission.com\/ko\/wp-json\/wp\/v2\/comments?post=343"}],"version-history":[{"count":0,"href":"https:\/\/5speedtransmission.com\/ko\/wp-json\/wp\/v2\/posts\/343\/revisions"}],"wp:attachment":[{"href":"https:\/\/5speedtransmission.com\/ko\/wp-json\/wp\/v2\/media?parent=343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/5speedtransmission.com\/ko\/wp-json\/wp\/v2\/categories?post=343"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/5speedtransmission.com\/ko\/wp-json\/wp\/v2\/tags?post=343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}