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

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