D20B28

Metric Roller Chain Sprocket

Item #100967367

32 mm Minimum Bore

98 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

Series	B
Sprocket Style	B
Hub Length Thru	80 mm
Length Through Bore	80.01 mm
Caliper Diameter	264.52 mm
Martin No.	20B28
Chain No.	20B, 20B-2
No. of Teeth	28
Bore Range [Min]	32 mm
Pitch Root Diameter	264.5 mm
No. of Strands Across	2
Pin Diameter	19.05 mm
Bore Range [Max]	98 mm
Hub Dia.	145.01 mm
Bore Type	Reborable
Hardened Teeth	Without Hardened Teeth
Outside Dia.	304.21 mm
Width Across Teeth	54.64 mm
Chain Pitch	31.75 mm
Inch/Metric	Metric
Single Strand Tooth Thickness	18.19 mm
Pitch Diameter [Min]	283.6 mm
Material	Steel
Outside Dia. [Min]	304.21 mm
Pitch Diameter	283.6 mm
Bore Style	Minimum Bore
Family Name	No. 20 - 31.750 mm Pitch - Double - Type B & C
Root Diameter	264.5 mm
Weight	59.04 LB
EAN or UPC	697950405063