20A72

Metric Roller Chain Sprocket

Item #100966936

40 mm Minimum Bore

698.96 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	31.75 mm
Pin Diameter	19.05 mm
Pitch Diameter	727.9 mm
Sprocket Style	A
Length Through Bore	18.59 mm
Pitch Diameter [Min]	727.9 mm
Pitch Root Diameter	708.8 mm
Hub Length Thru	N/A
Hardened Teeth	Without Hardened Teeth
Caliper Diameter	708.84 mm
Outside Dia. [Min]	748.52 mm
No. of Teeth	72
No. of Strands Across	1
Bore Type	Reborable
Family Name	No. 20 - 31.750 mm Pitch - Single - A
Inch/Metric	Metric
Material	Steel
Width Across Teeth	18.59 mm
Chain No.	20B, 20B-1
Bore Range [Max]	698.96 mm
Hub Projection	N/A
Root Diameter	708.8 mm
Outside Dia.	748.52 mm
Martin No.	20A72
Bore Range [Min]	40 mm
Series	A
Single Strand Tooth Thickness	18.59 mm
Bore Style	Minimum Bore
Hub Dia.	N/A
Weight	122.79 LB
EAN or UPC	697950404738