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

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