D120B21

Double Strand Sprocket

Item #100806314

1.5 in Minimum Bore

3.5 in Maximum Bore

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each One-time purchase

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Double Strand Sprocket

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US Tsubaki Inc. D120B21

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Product Details

Maximum bores shown will accommodate standard keyseat and setscrew over keyseat. Slightly larger bores are possible with no keyseat, shallow keyseat, or setscrew at an angle to keyseat.

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’ split-taper bushings

Specifications

Bore Size [Max]	3.5 in
Bushing Bore Size [Max]	3.5 in
Pitch Diameter	10.06 in
Outside Dia.	10.852 in
Sprocket Style	B
Bore Size [Min]	1.5 in
Bore Type	Finished Bore
No. of Teeth Rows Strands	2
Bore Range [Max]	3.5 in
Chain Sprocket Number	120
Construction Internal	Welded
Bore Style	Minimum Bore
Hub Length Thru	2.856 in
Material Internal Use	Carbon Steel
Hub Dia.	5 1/2 in
Hub Projection	1.075 in
Bore Range [Min]	1.5 in
Pitch Diameter [Min]	10.06 in
Martin No.	120B21
Material	Steel
No. of Teeth	21
Hardened Teeth	Without Hardened Teeth
No. of Strands Across	2
Family Name	No. 120 - 1 1/2 in Pitch - Double - Type B & C
O.D.	10.852 in
Bushing Bore Size [Min]	1.5 in
Chain No.	120
Single Strand Tooth Thickness	0.894 in
Stock Bore Size	1.5 in
Length Through Bore	3.75 in
Hub O.D.	5.5 in
Chain Pitch	1.500 in
Finished Bore Size	1.5 in
Material External Use	Steel
Outside Dia. [Min]	10.852 in
Width Across Teeth	2.675 in
Pitch Dia.	10.064 in
Bushing Bore [Min]	1.5 in
Inch/Metric	Inch
Caliper Diameter	9.161 in
Chain Sprocket Pitch	1.5 in
Series	B
Weight	55.6 LB
EAN or UPC	697950025520