12A42

Metric Roller Chain Sprocket

Item #100966374

24.02 mm Minimum Bore

236.67 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.

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
Manufactured of high carbon steel

Specifications

Series	A
No. of Strands Across	1
Root Diameter	242.9 mm
Bore Type	Reborable
Chain No.	12B, 12B-1
Material	Steel
Martin No.	12A42
Bore Range [Max]	236.67 mm
Caliper Diameter	242.85 mm
Outside Dia.	266.66 mm
Chain Pitch	19.05 mm
Width Across Teeth	11.1 mm
Hub Projection	N/A
Sprocket Style	A
Bore Range [Min]	24.02 mm
Pin Diameter	12.065 mm
Single Strand Tooth Thickness	11.1 mm
Pitch Diameter [Min]	254.9 mm
Hub Length Thru	N/A
Family Name	No. 12 - 19.050 mm Pitch - Single - A
Pitch Diameter	254.9 mm
Hub Dia.	N/A
Pitch Root Diameter	242.9 mm
Length Through Bore	11.1 mm
Inch/Metric	Metric
Outside Dia. [Min]	266.66 mm
Hardened Teeth	Without Hardened Teeth
Bore Style	Minimum Bore
No. of Teeth	42
Weight	8.81 LB
EAN or UPC	697950400921