12A48

Metric Roller Chain Sprocket

Item #100966380

25.02 mm Minimum Bore

273.11 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 Dia.	N/A
Single Strand Tooth Thickness	11.1 mm
Inch/Metric	Metric
No. of Strands Across	1
Chain Pitch	19.05 mm
Hub Projection	N/A
Pin Diameter	12.065 mm
Sprocket Style	A
Bore Style	Minimum Bore
Outside Dia.	303.02 mm
Root Diameter	279.2 mm
Pitch Root Diameter	279.2 mm
Chain No.	12B, 12B-1
Bore Range [Min]	25.02 mm
Hub Length Thru	N/A
No. of Teeth	48
Width Across Teeth	11.1 mm
Outside Dia. [Min]	303.02 mm
Series	A
Bore Range [Max]	273.11 mm
Martin No.	12A48
Family Name	No. 12 - 19.050 mm Pitch - Single - A
Pitch Diameter [Min]	291.3 mm
Material	Steel
Hardened Teeth	Without Hardened Teeth
Length Through Bore	11.1 mm
Bore Type	Reborable
Caliper Diameter	279.21 mm
Pitch Diameter	291.3 mm
Weight	12.67 LB
EAN or UPC	697950401041