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
Bushing Series
1610
Bore Type
Bushed
Bushing Bore Size [Max]
2.063 in
Hub Length
0.72 in
Bushing Bore [Max]
1.625 in
Material Internal Use
Atomized Metals
Chain Sprocket Number
40
Construction Internal
Solid
O.D.
3.938 in
Bushing Bore [Min]
0.5 in
Material External Use
Steel
Overall Length Less Threads
N/A
Chain Pitch
0.500 in
Tooth Width
0.284 in
No. of Teeth Rows Strands
1
Pitch Diameter
3.672 in
Chain No.
40
No. of Teeth
23
Bore Size [Max]
2.063 in
Material
Steel
Bushing Type
Taper Lock
Single Strand Tooth Thickness
0.284 in
Overall Length
1 in
Martin No.
40BTB23H
Hardened Teeth
With Hardened Teeth
Hub Dia.
3 in
Inch/Metric
Inch
Sprocket Style
B
Pitch Dia.
3.672 in
Hub O.D.
3 in
Length Through Bore
1 in
Outside Dia. [Min]
3.938 in
Outside Dia.
3.938 in
Hub Projection
0.72 in
Caliper Diameter
3.3514 in
Type
B
No. of Strands Across
1
Chain Sprocket Pitch
0.5 in
Width Across Teeth
1 in
Weight
1.16 LB
EAN or UPC
697950043081
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