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

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