12B54

Metric Roller Chain Sprocket

Item #100966433

32.02 mm Minimum Bore

77 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.

Manufactured of high carbon steel
Precise machining and processes ensure consistent finish and high quality
Bores are concentric to pitch line, minimizing run out
Chain rows are parallel and precisely spaced to increase longevity of sprocket and chain

Specifications

Root Diameter	315.6 mm
Bore Range [Max]	77 mm
Family Name	No. 12 - 19.050 mm Pitch - Single - Type B & C
Hub Length Thru	45 mm
Pitch Diameter	327.6 mm
Length Through Bore	45.01 mm
Pitch Diameter [Min]	327.6 mm
Caliper Diameter	315.57 mm
Hub Dia.	109.75 mm
Hardened Teeth	Without Hardened Teeth
Pin Diameter	12.065 mm
Chain No.	12B, 12B-1
Outside Dia. [Min]	339.38 mm
Inch/Metric	Metric
Bore Range [Min]	32.02 mm
Single Strand Tooth Thickness	11.1 mm
Bore Style	Minimum Bore
Series	B
Sprocket Style	B
No. of Teeth	54
Bore Type	Reborable
Outside Dia.	339.38 mm
No. of Strands Across	1
Width Across Teeth	11.1 mm
Chain Pitch	19.05 mm
Pitch Root Diameter	315.6 mm
Martin No.	12B54
Material	Steel
Weight	21.6 LB
EAN or UPC	697950401072