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

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