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PRODUCT · Shaft-Hub Connection

QD Bushings

Flanged QD bushing with pull-up bolts, mounts from either side and pulls into the mating taper bore; JA / SH / SDS / SD / SK / SF … series (US-standard SD-25).

Last updated Reviewed by Luo Genwen, Production Plant Manager

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QD US-standard bushing diagram
Representation: SD-25 · Bush No - Bore

Specifications · Selector

QD US-standard bushing specifications

Filter by the conditions below, or search and click a column header to sort; request a quote in one click. Dimensions per catalogue.

Complete size table · 13 sizes (static version for printing and full-text search)
QD US-standard bushing specifications
Bushing BushingCDLMNEBolt circle Bolt circleFlat-point screws Cap screwsMin. bore Bore minMax. bore Bore maxWeight kg
JA5⁄16210.201.37511⁄161.6563-M5×253⁄810.9
SH7⁄162 11⁄1615⁄160.231.8717⁄82 1⁄43-1⁄4×1 3⁄81⁄21 3⁄81.0
SDS7⁄163 1⁄815⁄160.232.1877⁄82 11⁄163-1⁄4×1 3⁄81⁄21 5⁄81.0
SD7⁄163 1⁄81 13⁄160.232.1871 3⁄82 11⁄163-1⁄4×1 3⁄81⁄21 5⁄81.5
SK9⁄163 7⁄81 15⁄160.232.8121 3⁄83 5⁄163-5⁄16×21⁄22 1⁄42.0
SF5⁄84 5⁄82 1⁄160.233.1251 7⁄163 7⁄83-3⁄8×21⁄22 1⁄44.0
E7⁄862 3⁄49⁄323.8341 7⁄853-1⁄2×2 3⁄47⁄82 7⁄810.5
F16 5⁄83 3⁄411⁄324.4372 3⁄46 3⁄83-9⁄16×3 5⁄813 1⁄415.0
J1 1⁄87 1⁄44 5⁄85⁄165.1483 1⁄26 1⁄43-5⁄8×4 1⁄213 13⁄1623.0
M1 1⁄496 3⁄411⁄326.4945 1⁄27 7⁄84-3⁄4×6 3⁄824 11⁄1655.0
N1 1⁄2108 1⁄89⁄166.9928 5⁄88 1⁄24-7⁄8×82 7⁄165 1⁄1673.0
P+1 3⁄411 3⁄49 3⁄85⁄88.2427 5⁄8104-1×9 1⁄22 15⁄165 13⁄16120.0
W+21511 3⁄811⁄1610.4379 3⁄812 3⁄44-1 1⁄8×11 1⁄247 1⁄2250.0

Static copy of the selector data for reference and printing; use the interactive selector above to filter, sort and request a quote. All dimensions in mm; full range and tolerances per the PDF catalogue.

Click a column header to sort · one-click quote · full range & tolerances per PDF catalogue. Download PDF catalogue ↗

FAQ

Common questions about this series

QD Bushings: what size range does the table cover?

The tables cover 13 bush sizes (JA / SH / SDS / SD / SK / SF / E / F / J / M / N / P+ / W+), metric and inch, keyways to standard. Common bores ship from stock; other bores and keyways are machined to order.

QD Bushings: what is it and when should I use it?

Flanged QD bushing with pull-up bolts, mounts from either side and pulls into the mating taper bore; JA / SH / SDS / SD / SK / SF … series (US-standard SD-25). Taper-Lock (TB) bushes are the European standard: a split bush drawn into the hub taper by grub screws, flush with the hub, removed by moving a screw to the jacking hole. QD bushes are the American standard: a flanged bush with pull-up bolts that can be mounted from either side and is faster to remove. Match the bush standard to the pulley or sprocket you have — the two are not interchangeable.

QD Bushings: can I order a size that is not in the table, or just one piece?

Yes. Everything on this page is made to drawing, and the table is only the standard-size subset of the catalogue. Minimum order quantity is one piece — we routinely make single replacement parts for OEMs whose original supplier has discontinued the item. Send a DWG, STEP or PDF drawing (or a sample part): you get a formal quotation within 24 hours after the information is complete, and the first article ships within 30 days of drawing approval, with inspection records.

QD Bushings: what do I need to send to get a quote?

Send: the bush standard (Taper-Lock TB or QD) and bush number, or the pulley/sprocket part number, the finished bore and keyway (metric or inch), quantity, and whether you want the bushes fitted to pulleys we supply. For a bore that is not in the table, we machine it to order.

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