Hardened teeth on the smaller sprocket of a roller chain drive are recommended if the drive ratio is four to one or greater or if the smaller sprocket has 24 teeth or less and is running at a speed of over 600 rpm.
features
Tolerances meet or exceed ANSI standards
Manufactured of high carbon steel
Precise machining and processes ensure consistent finish and high quality
Chain rows are parallel and precisely spaced to increase longevity of sprocket and chain
Bores are concentric to pitch line, minimizing run out
Interchangeable with other manufacturers’ Taper bushings
Stocked Heat Treat
Hub Dia.
3 in
Bushing Bore [Min]
0.5 in
Caliper Diameter
3.3514 in
Outside Dia. [Min]
3.938 in
Single Strand Tooth Thickness
0.284 in
Construction Internal
Solid
Material External Use
Steel
Bushing Type
Taper Lock
Sprocket Style
B
Overall Length Less Threads
N/A
Overall Length
1 in
Chain Pitch
0.500 in
No. of Strands Across
1
Inch/Metric
Inch
Length Through Bore
1 in
Outside Dia.
3.938 in
Martin No.
40BTB23H
Type
B
O.D.
3.938 in
Material Internal Use
Atomized Metals
Bushing Bore Size [Max]
2.063 in
Material
Steel
Hub Projection
0.72 in
Tooth Width
0.284 in
Width Across Teeth
1 in
Hardened Teeth
With Hardened Teeth
Chain No.
40
Pitch Diameter
3.672 in
Bushing Bore [Max]
1.625 in
No. of Teeth
23
Hub Length
0.72 in
No. of Teeth Rows Strands
1
Hub O.D.
3 in
Bore Size [Max]
2.063 in
Bushing Series
1610
Bore Type
Bushed
Chain Sprocket Pitch
0.5 in
Chain Sprocket Number
40
Pitch Dia.
3.672 in
Weight
1.16 LB
EAN or UPC
697950043081
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