D120B12

Double Strand Sprocket

Item #100806305

1.5 in Minimum Bore

2.75 in Maximum Bore

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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

Hub O.D.	4.063 in
No. of Teeth Rows Strands	2
Bore Type	Finished Bore
No. of Teeth	12
Bushing Bore Size [Min]	1.5 in
Bushing Bore [Min]	1.5 in
Hub Dia.	4 1/16 in
Series	B
Outside Dia.	6.498 in
Finished Bore Size	1.5 in
Bore Size [Max]	2.75 in
Hub Length Thru	2.856 in
Chain No.	120
O.D.	6.498 in
Bore Size [Min]	1.5 in
Construction Internal	Solid
Pitch Diameter [Min]	5.8 in
No. of Strands Across	2
Martin No.	120B12
Sprocket Style	B
Outside Dia. [Min]	6.498 in
Inch/Metric	Inch
Caliper Diameter	4.921 in
Chain Pitch	1.500 in
Pitch Diameter	5.8 in
Material Internal Use	Carbon Steel
Material External Use	Steel
Bore Range [Min]	1.5 in
Bore Range [Max]	2.75 in
Stock Bore Size	1.5 in
Length Through Bore	3.75 in
Width Across Teeth	2.675 in
Material	Steel
Chain Sprocket Number	120
Hub Projection	1.075 in
Family Name	No. 120 - 1 1/2 in Pitch - Double - Type B & C
Hardened Teeth	Without Hardened Teeth
Bore Style	Minimum Bore
Chain Sprocket Pitch	1.5 in
Pitch Dia.	5.796 in
Bushing Bore Size [Max]	2.75 in
Single Strand Tooth Thickness	0.894 in
Weight	17.3 LB
EAN or UPC	697950025438