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

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