40BS21 1 1/4

No. 40 - 1/2" Pitch - Single - Bored to Size Sprocket

Item #100807067

Without Hardened Teeth

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US Tsubaki Inc. 40BS21 1 1/4

No. 40 - 1/2" Pitch - Finished Bore Sprockets

Item #101621614

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Product Details

Specifications

Pitch Dia.	3.355 in
Chain Sprocket Pitch	0.5 in
Chain No.	40
O.D.	3.617 in
Material Internal Use	Atomized Metals
Hardened Teeth	Without Hardened Teeth
Chain Sprocket Number	40
Chain Pitch	0.500 in
Hub Length Thru	0.716 in
Material	Steel
No. of Screws	2
No. of Strands Across	1
No. of Teeth Rows Strands	1
Material External Use	Steel
Width Across Teeth	0.284 in
Length Through Bore	1 in
Set Screw Location	(1) Over Keyway and (1) At 90°
Key Way Size	1/4 X 1/8 in
Caliper Diameter	3.0334 in
Outside Dia. [Min]	3.6170 in
Hub O.D.	2.75 in
Single Strand Tooth Thickness	0.284 in
Construction Internal	Solid
Pitch Diameter [Min]	3.355 in
Inch/Metric	Inch
Keyway Size	1/4 x 1/8 in
Bore Type	Finished Bore
Finished Bore Size	1.25 in
Keyway	w/Keyway & Set Screw
Pitch Diameter	3.355 in
Finished Bore	1.250 in - 1 1/4 in
Martin No.	40BS21
Set Screw Size	5/16-18 UNC
Hub Projection	0.72 in
No. of Teeth	21
Hub Dia.	2 3/4 in
Outside Dia.	3.6170 in
Sprocket Style	B
Weight	1.47 LB
EAN or UPC	697950148731