40SH21H

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

Item #100804094

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US Tsubaki Inc. 40SH21H

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

Item #101676182

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