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

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