12A46

Metric Roller Chain Sprocket

Item #100966378

25.02 mm Minimum Bore

260.97 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

Series	A
Hub Projection	N/A
Inch/Metric	Metric
No. of Teeth	46
Outside Dia. [Min]	290.9 mm
Bore Range [Min]	25.02 mm
Width Across Teeth	11.1 mm
Pitch Root Diameter	267.1 mm
Pin Diameter	12.065 mm
Root Diameter	267.1 mm
Sprocket Style	A
Martin No.	12A46
No. of Strands Across	1
Material	Steel
Single Strand Tooth Thickness	11.1 mm
Bore Type	Reborable
Length Through Bore	11.1 mm
Caliper Diameter	267.09 mm
Pitch Diameter [Min]	279.2 mm
Bore Range [Max]	260.97 mm
Hub Dia.	N/A
Pitch Diameter	279.2 mm
Chain Pitch	19.05 mm
Hardened Teeth	Without Hardened Teeth
Family Name	No. 12 - 19.050 mm Pitch - Single - A
Chain No.	12B, 12B-1
Hub Length Thru	N/A
Bore Style	Minimum Bore
Outside Dia.	290.9 mm
Weight	50.13 LB
EAN or UPC	697950401003