12A50

Metric Roller Chain Sprocket

Item #100966381

25.02 mm Minimum Bore

285.26 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

Chain Pitch	19.05 mm
Bore Type	Reborable
Root Diameter	291.3 mm
Pitch Root Diameter	291.3 mm
Sprocket Style	A
Width Across Teeth	11.1 mm
Material	Steel
Pitch Diameter	303.4 mm
Outside Dia. [Min]	315.14 mm
Hub Dia.	N/A
Series	A
Inch/Metric	Metric
Bore Range [Max]	285.26 mm
Bore Range [Min]	25.02 mm
Pitch Diameter [Min]	303.4 mm
Hub Length Thru	N/A
Chain No.	12B, 12B-1
Single Strand Tooth Thickness	11.1 mm
Length Through Bore	11.1 mm
Hardened Teeth	Without Hardened Teeth
Martin No.	12A50
Family Name	No. 12 - 19.050 mm Pitch - Single - A
Pin Diameter	12.065 mm
Hub Projection	N/A
No. of Strands Across	1
Bore Style	Minimum Bore
Caliper Diameter	291.32 mm
No. of Teeth	50
Outside Dia.	315.14 mm
Weight	12.58 LB
EAN or UPC	697950401065