40SH21H

Single Strand Sprocket; 40 Chain Size; 21 Teeth; Requires SH QD Bushing

Item #100804094

Auto Replenish

each One-time purchase

Alternate Products

US Tsubaki Inc. 40SH21H

Single Strand Sprocket; 40 Chain Size; 21 Teeth; Requires SH QD Bushing

Item #101676182

each

Compare

Product Details

Hardened teeth on the smaller sprocket of a roller chain drive are recommended if the drive ratio is four to one or greater or if the smaller sprocket has 24 teeth or less and is running at a speed of over 600 rpm.

Tolerances meet or exceed ANSI standards
Manufactured of high carbon steel
Precise machining and processes ensure consistent finish and high quality
Chain rows are parallel and precisely spaced to increase longevity of sprocket and chain
Bores are concentric to pitch line, minimizing run out
Interchangeable with other manufacturers’ QD bushings
Stocked Heat Treat

Specifications

Bushing Type	QD
Hub O.D.	2.75 in
Length Through Bore	0.812 in
Bushing Bore [Min]	0.5 in
Inch/Metric	Inch
Type	B
Bore Type	Bushed
Construction Internal	Solid
Hub Dia.	2 3/4 in
Outside Dia. [Min]	3.617 in
Hardened Teeth	With Hardened Teeth
Material	Steel
Pitch Dia.	3.355 in
Material External Use	Steel
Overall Length	0.8125 in
Bushing Bore Size [Min]	0.5 in
Single Strand Tooth Thickness	0.284 in
No. of Teeth Rows Strands	1
Width Across Teeth	0.284 in
Material Internal Use	Carbon Steel
Screw Size	1/4-20 UNC
Chain No.	40
O.D.	3.617 in
Hub Projection	0.53 in
Tooth Width	0.284 in
Bore Size [Min]	0.5 in
No. of Strands Across	1
Overall Length Less Threads	N/A
Hub Length	0.53 in
No. of Teeth	21
Bushing Series	SH
Chain Sprocket Pitch	0.5 in
Bushing Bore Size [Max]	1.688 in
Bushing Bore [Max]	1.625 in
Chain Sprocket Number	40
Martin No.	40SH21H
Bore Size [Max]	1.688 in
Chain Pitch	0.500 in
Pitch Diameter	3.3548 in
Outside Dia.	3.617 in
Caliper Diameter	3.0334 in
Sprocket Style	B
Weight	0.84 LB
EAN or UPC	697950041643