28A48

Metric Roller Chain Sprocket

Item #100967169

40.03 mm Minimum Bore

638.85 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

No. of Teeth	48
Bore Style	Minimum Bore
Caliper Diameter	651.69 mm
Single Strand Tooth Thickness	29.44 mm
Hub Dia.	N/A
Pitch Diameter	679.6 mm
Root Diameter	651.7 mm
Sprocket Style	A
Series	A
Chain No.	28B, 28B-1
Pin Diameter	27.94 mm
Length Through Bore	29.44 mm
Bore Range [Min]	40.03 mm
Chain Pitch	44.45 mm
Hardened Teeth	Without Hardened Teeth
Material	Steel
Bore Range [Max]	638.85 mm
Bore Type	Reborable
Martin No.	28A48
Family Name	No. 28 - 44.450 mm Pitch - Single - A
Hub Length Thru	N/A
Outside Dia. [Min]	707.25 mm
Pitch Diameter [Min]	679.6 mm
Width Across Teeth	29.44 mm
Inch/Metric	Metric
Outside Dia.	707.25 mm
Hub Projection	N/A
No. of Strands Across	1
Pitch Root Diameter	651.7 mm
Weight	153.61 LB
EAN or UPC	697950407036