12A27

Metric Roller Chain Sprocket

Item #100966359

19.02 mm Minimum Bore

145.45 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

Family Name	No. 12 - 19.050 mm Pitch - Single - A
Pitch Diameter [Min]	164.1 mm
Width Across Teeth	11.1 mm
Bore Range [Max]	145.45 mm
Bore Style	Minimum Bore
Single Strand Tooth Thickness	11.1 mm
Sprocket Style	A
Hub Length Thru	N/A
Inch/Metric	Metric
Chain No.	12B, 12B-1
Outside Dia. [Min]	175.84 mm
Bore Range [Min]	19.02 mm
No. of Strands Across	1
No. of Teeth	27
Material	Steel
Martin No.	12A27
Pitch Root Diameter	152 mm
Root Diameter	152 mm
Series	A
Hardened Teeth	Without Hardened Teeth
Hub Projection	N/A
Outside Dia.	175.84 mm
Hub Dia.	N/A
Pin Diameter	12.065 mm
Length Through Bore	11.1 mm
Pitch Diameter	164.1 mm
Caliper Diameter	151.75 mm
Chain Pitch	19.05 mm
Bore Type	Reborable
Weight	3.82 LB
EAN or UPC	697950400624