20A30

Metric Roller Chain Sprocket

Item #100966904

32 mm Minimum Bore

273.84 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

No. of Strands Across	1
Bore Style	Minimum Bore
Hub Dia.	N/A
Pitch Diameter [Min]	303.7 mm
Martin No.	20A30
Hub Projection	N/A
Single Strand Tooth Thickness	18.59 mm
Bore Type	Reborable
Width Across Teeth	18.59 mm
No. of Teeth	30
Caliper Diameter	284.7 mm
Root Diameter	284.7 mm
Length Through Bore	18.59 mm
Chain Pitch	31.75 mm
Family Name	No. 20 - 31.750 mm Pitch - Single - A
Chain No.	20B, 20B-1
Pitch Root Diameter	284.7 mm
Inch/Metric	Metric
Outside Dia.	324.38 mm
Bore Range [Min]	32 mm
Pin Diameter	19.05 mm
Outside Dia. [Min]	324.38 mm
Sprocket Style	A
Bore Range [Max]	273.84 mm
Pitch Diameter	303.7 mm
Hardened Teeth	Without Hardened Teeth
Series	A
Hub Length Thru	N/A
Material	Steel
Weight	1.76 LB
EAN or UPC	697950404097