12A31

Metric Roller Chain Sprocket

Item #100966363

19.02 mm Minimum Bore

169.8 mm 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.

Manufactured of high carbon steel
Precise machining and processes ensure consistent finish and high quality
Bores are concentric to pitch line, minimizing run out
Chain rows are parallel and precisely spaced to increase longevity of sprocket and chain

Specifications

Hub Projection	N/A
No. of Strands Across	1
Martin No.	12A31
Inch/Metric	Metric
Root Diameter	176.2 mm
Bore Range [Max]	169.8 mm
Chain No.	12B, 12B-1
Pin Diameter	12.065 mm
Hub Dia.	N/A
Outside Dia.	200.05 mm
Family Name	No. 12 - 19.050 mm Pitch - Single - A
Series	A
Outside Dia. [Min]	200.05 mm
Hardened Teeth	Without Hardened Teeth
Bore Style	Minimum Bore
Chain Pitch	19.05 mm
Pitch Diameter [Min]	188.3 mm
Bore Type	Reborable
Material	Steel
Hub Length Thru	N/A
Length Through Bore	11.1 mm
No. of Teeth	31
Pitch Diameter	188.3 mm
Width Across Teeth	11.1 mm
Single Strand Tooth Thickness	11.1 mm
Sprocket Style	A
Caliper Diameter	175.99 mm
Bore Range [Min]	19.02 mm
Pitch Root Diameter	176.2 mm
Weight	4.74 LB
EAN or UPC	697950400709