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

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