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