28C57

Metric Roller Chain Sprocket

Item #100967223

40.41 mm Minimum Bore

126 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

Chain Pitch	44.45 mm
Bore Range [Min]	40.41 mm
Width Across Teeth	29.44 mm
Length Through Bore	127 mm
Chain No.	28B, 28B-1
Family Name	No. 28 - 44.450 mm Pitch - Single - Type B & C
No. of Teeth	57
Hub Dia.	177.98 mm
Bore Type	Reborable
Outside Dia.	834.52 mm
Root Diameter	779 mm
Series	C
Single Strand Tooth Thickness	29.44 mm
Pitch Diameter [Min]	806.9 mm
Hub Length Thru	127 mm
Pitch Diameter	806.9 mm
No. of Strands Across	1
Caliper Diameter	778.65 mm
Material	Steel
Bore Range [Max]	126 mm
Outside Dia. [Min]	834.52 mm
Sprocket Style	C
Hardened Teeth	Without Hardened Teeth
Bore Style	Minimum Bore
Martin No.	28C57
Pitch Root Diameter	779 mm
Inch/Metric	Metric
Pin Diameter	27.94 mm
Weight	282.0 LB
EAN or UPC	697950407067