28A23

Metric Roller Chain Sprocket

Item #100967156

40.03 mm Minimum Bore

284.07 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	326.4 mm
Pitch Diameter [Min]	326.4 mm
Martin No.	28A23
Series	A
Caliper Diameter	297.74 mm
Hub Projection	N/A
Bore Style	Minimum Bore
Hub Dia.	N/A
Pitch Root Diameter	298.5 mm
Chain Pitch	44.45 mm
Hardened Teeth	Without Hardened Teeth
Root Diameter	298.5 mm
Hub Length Thru	N/A
Chain No.	28B, 28B-1
Outside Dia. [Min]	354.06 mm
Inch/Metric	Metric
Bore Range [Max]	284.07 mm
Material	Steel
Width Across Teeth	29.44 mm
Sprocket Style	A
No. of Teeth	23
No. of Strands Across	1
Bore Type	Reborable
Single Strand Tooth Thickness	29.44 mm
Bore Range [Min]	40.03 mm
Pin Diameter	27.94 mm
Family Name	No. 28 - 44.450 mm Pitch - Single - A
Outside Dia.	354.06 mm
Length Through Bore	29.44 mm
Weight	30.99 LB
EAN or UPC	697950406770