D140B21

Double Strand Sprocket

Item #100806332

1.75 in Minimum Bore

5.25 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

Family Name	No. 140 - 1 3/4 in Pitch - Double - Type B & C
Material	Steel
Bore Range [Min]	1.75 in
Caliper Diameter	10.709 in
Pitch Diameter	11.74 in
Sprocket Style	B
Hub Dia.	7 in
Hardened Teeth	Without Hardened Teeth
Hub Projection	1.19 in
Width Across Teeth	2.81 in
Inch/Metric	Inch
Chain No.	140
Outside Dia. [Min]	12.66 in
Series	B
Bore Range [Max]	5.25 in
No. of Teeth	21
Pitch Diameter [Min]	11.74 in
Martin No.	140B21
Hub Length Thru	3.106 in
Chain Pitch	1.75 in
Length Through Bore	4 in
Bore Style	Minimum Bore
Outside Dia.	12.66 in
Bore Type	Reborable
Single Strand Tooth Thickness	2.818 in
No. of Strands Across	2
Weight	82.0 LB
EAN or UPC	697950026589