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

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