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

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