20A58

Metric Roller Chain Sprocket

Item #100966932

40 mm Minimum Bore

557.36 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

Outside Dia. [Min]	607.09 mm
Root Diameter	567.4 mm
No. of Teeth	58
Pitch Diameter [Min]	586.5 mm
Hardened Teeth	Without Hardened Teeth
No. of Strands Across	1
Hub Dia.	N/A
Material	Steel
Inch/Metric	Metric
Sprocket Style	A
Length Through Bore	18.59 mm
Single Strand Tooth Thickness	18.59 mm
Martin No.	20A58
Chain Pitch	31.75 mm
Hub Projection	N/A
Chain No.	20B, 20B-1
Hub Length Thru	N/A
Bore Style	Minimum Bore
Width Across Teeth	18.59 mm
Bore Range [Min]	40 mm
Series	A
Pitch Root Diameter	567.4 mm
Bore Range [Max]	557.36 mm
Bore Type	Reborable
Family Name	No. 20 - 31.750 mm Pitch - Single - A
Pitch Diameter	586.5 mm
Caliper Diameter	567.4 mm
Outside Dia.	607.09 mm
Pin Diameter	19.05 mm
Weight	78.92 LB
EAN or UPC	697950404653