20B30

Metric Roller Chain Sprocket

Item #100966966

31.88 mm Minimum Bore

90 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

Pitch Diameter [Min]	303.7 mm
Hub Dia.	127 mm
Inch/Metric	Metric
Hub Length Thru	32.41 mm
Sprocket Style	B
Root Diameter	284.7 mm
Family Name	No. 20 - 31.750 mm Pitch - Single - Type B & C
No. of Teeth	30
Material	Steel
Outside Dia. [Min]	324.38 mm
Caliper Diameter	284.7 mm
Chain Pitch	31.75 mm
Outside Dia.	324.38 mm
Hardened Teeth	Without Hardened Teeth
Chain No.	20B, 20B-1
Pitch Root Diameter	284.7 mm
Series	B
No. of Strands Across	1
Bore Range [Max]	90 mm
Bore Range [Min]	31.88 mm
Single Strand Tooth Thickness	18.59 mm
Length Through Bore	51.05 mm
Pin Diameter	19.05 mm
Bore Type	Reborable
Bore Style	Minimum Bore
Pitch Diameter	303.7 mm
Martin No.	20B30
Width Across Teeth	18.59 mm
Weight	40.7 LB
EAN or UPC	697950404080