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

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