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