28A25

Metric Roller Chain Sprocket

Item #100967158

40.03 mm Minimum Bore

312.53 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
Chain rows are parallel and precisely spaced to increase longevity of sprocket and chain
Bores are concentric to pitch line, minimizing run out

Specifications

Caliper Diameter	326.01 mm
Single Strand Tooth Thickness	29.44 mm
Pin Diameter	27.94 mm
Pitch Root Diameter	326.7 mm
Bore Range [Min]	40.03 mm
Pitch Diameter [Min]	354.7 mm
Family Name	No. 28 - 44.450 mm Pitch - Single - A
Outside Dia. [Min]	382.28 mm
Bore Type	Reborable
Hub Projection	N/A
No. of Teeth	25
Chain Pitch	44.45 mm
Inch/Metric	Metric
Sprocket Style	A
Material	Steel
Outside Dia.	382.28 mm
Series	A
Length Through Bore	29.44 mm
Hardened Teeth	Without Hardened Teeth
Martin No.	28A25
Hub Length Thru	N/A
Root Diameter	326.7 mm
Width Across Teeth	29.44 mm
Chain No.	28B, 28B-1
No. of Strands Across	1
Pitch Diameter	354.7 mm
Bore Range [Max]	312.53 mm
Bore Style	Minimum Bore
Hub Dia.	N/A
Weight	36.99 LB
EAN or UPC	697950406817