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

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