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

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