12A38

Metric Roller Chain Sprocket

Item #100966370

24.02 mm Minimum Bore

212.36 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

Pin Diameter	12.065 mm
Length Through Bore	11.1 mm
No. of Teeth	38
Hub Projection	N/A
Material	Steel
Sprocket Style	A
Bore Range [Max]	212.36 mm
Hub Length Thru	N/A
Chain Pitch	19.05 mm
Pitch Diameter [Min]	230.7 mm
Bore Type	Reborable
Bore Range [Min]	24.02 mm
Single Strand Tooth Thickness	11.1 mm
Width Across Teeth	11.1 mm
Hub Dia.	N/A
Pitch Root Diameter	218.6 mm
Inch/Metric	Metric
No. of Strands Across	1
Series	A
Martin No.	12A38
Outside Dia. [Min]	242.43 mm
Outside Dia.	242.43 mm
Root Diameter	218.6 mm
Hardened Teeth	Without Hardened Teeth
Family Name	No. 12 - 19.050 mm Pitch - Single - A
Pitch Diameter	230.7 mm
Chain No.	12B, 12B-1
Bore Style	Minimum Bore
Caliper Diameter	218.62 mm
Weight	8.09 LB
EAN or UPC	697950400846