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

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