12A31

Metric Roller Chain Sprocket

Item #100966363

19.02 mm Minimum Bore

169.8 mm Maximum Bore

+ Show More

Auto Replenish

each One-time purchase

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

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