28C57

Metric Roller Chain Sprocket

Item #100967223

40.41 mm Minimum Bore

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