12A40

Metric Roller Chain Sprocket

Item #100966372

24.02 mm Minimum Bore

224.52 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

Hub Length Thru	N/A
Root Diameter	230.7 mm
Chain Pitch	19.05 mm
Martin No.	12A40
Chain No.	12B, 12B-1
Bore Range [Min]	24.02 mm
Pin Diameter	12.065 mm
Inch/Metric	Metric
Caliper Diameter	230.74 mm
Width Across Teeth	11.1 mm
Bore Style	Minimum Bore
Hub Dia.	N/A
Hub Projection	N/A
Outside Dia. [Min]	254.55 mm
Length Through Bore	11.1 mm
Sprocket Style	A
Series	A
Single Strand Tooth Thickness	11.1 mm
No. of Teeth	40
Material	Steel
Family Name	No. 12 - 19.050 mm Pitch - Single - A
Pitch Diameter [Min]	242.8 mm
Hardened Teeth	Without Hardened Teeth
Bore Type	Reborable
Pitch Diameter	242.8 mm
Bore Range [Max]	224.52 mm
No. of Strands Across	1
Outside Dia.	254.55 mm
Pitch Root Diameter	230.7 mm
Weight	17.64 LB
EAN or UPC	697950400884