12A45

Metric Roller Chain Sprocket

Item #100966377

25.02 mm Minimum Bore

254.89 mm Maximum Bore

+ Show More

Auto Replenish

each One-time purchase

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

Outside Dia. [Min]	284.84 mm
Bore Range [Min]	25.02 mm
Inch/Metric	Metric
Chain No.	12B, 12B-1
Hardened Teeth	Without Hardened Teeth
Root Diameter	261 mm
Single Strand Tooth Thickness	11.1 mm
Bore Style	Minimum Bore
Bore Range [Max]	254.89 mm
Martin No.	12A45
Series	A
Family Name	No. 12 - 19.050 mm Pitch - Single - A
Length Through Bore	11.1 mm
Width Across Teeth	11.1 mm
Chain Pitch	19.05 mm
Hub Projection	N/A
No. of Strands Across	1
Sprocket Style	A
Hub Length Thru	N/A
Caliper Diameter	260.86 mm
Outside Dia.	284.84 mm
Material	Steel
Pitch Diameter [Min]	273.1 mm
Bore Type	Reborable
Pitch Diameter	273.1 mm
Pin Diameter	12.065 mm
Pitch Root Diameter	261 mm
No. of Teeth	45
Hub Dia.	N/A
Weight	24.97 LB
EAN or UPC	697950400983