12A54

Metric Roller Chain Sprocket

Item #100966382

30.02 mm Minimum Bore

309.54 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.

Chain rows are parallel and precisely spaced to increase longevity of sprocket and chain
Bores are concentric to pitch line, minimizing run out
Precise machining and processes ensure consistent finish and high quality
Manufactured of high carbon steel

Specifications

Hub Projection	N/A
Hub Dia.	N/A
Series	A
Outside Dia. [Min]	339.38 mm
Caliper Diameter	315.57 mm
Bore Type	Reborable
Pitch Root Diameter	315.6 mm
Pitch Diameter	327.6 mm
Hardened Teeth	Without Hardened Teeth
Pitch Diameter [Min]	327.6 mm
Hub Length Thru	N/A
Length Through Bore	11.1 mm
Material	Steel
Bore Style	Minimum Bore
Chain No.	12B, 12B-1
Bore Range [Min]	30.02 mm
Single Strand Tooth Thickness	11.1 mm
Bore Range [Max]	309.54 mm
Outside Dia.	339.38 mm
Pin Diameter	12.065 mm
Family Name	No. 12 - 19.050 mm Pitch - Single - A
No. of Teeth	54
Root Diameter	315.6 mm
No. of Strands Across	1
Inch/Metric	Metric
Width Across Teeth	11.1 mm
Chain Pitch	19.05 mm
Martin No.	12A54
Sprocket Style	A
Weight	16.16 LB
EAN or UPC	697950401089