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