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

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