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