D24B21

Metric Roller Chain Sprocket

Item #100967389

40 mm Minimum Bore

112 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

Family Name	No. 24 - 38.100 mm Pitch - Double - Type B & C
Series	B
Bore Range [Min]	40 mm
Caliper Diameter	229.52 mm
Hardened Teeth	Without Hardened Teeth
Bore Range [Max]	112 mm
No. of Strands Across	2
Chain Pitch	38.1 mm
Martin No.	24B21
Bore Type	Reborable
Material	Steel
Hub Dia.	159.99 mm
Pitch Diameter	255.6 mm
Outside Dia. [Min]	277.86 mm
Outside Dia.	277.86 mm
Width Across Teeth	71.98 mm
Pitch Diameter [Min]	255.6 mm
Pin Diameter	25.4 mm
Inch/Metric	Metric
Hub Length Thru	76.38 mm
Bore Style	Minimum Bore
Pitch Root Diameter	230.2 mm
Length Through Bore	100 mm
Chain No.	24B, 24B-2
No. of Teeth	21
Root Diameter	230.2 mm
Single Strand Tooth Thickness	23.62 mm
Sprocket Style	B
Weight	61.37 LB
EAN or UPC	697950406305