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