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
Hardened teeth sprockets afford longer chain and sprocket life
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
2012
Construction Internal
Solid
Bushing Bore [Max]
2 in
Length Through Bore
1.25 in
Chain Sprocket Number
60
Martin No.
60BTB20H
Chain Sprocket Pitch
0.75 in
Bushing Bore [Min]
1/2 in
Bushing Type
Taper Lock
Chain Pitch
0.750 in
Single Strand Tooth Thickness
0.444 in
Pitch Diameter
4.794 in
Chain No.
60
Overall Length
1 1/4 in
Bushing Bore Size [Max]
2.625 in
Bore Size [Max]
2.625 in
Material
Steel
Hub Length
0.81 in
No. of Teeth
20
Outside Dia.
5.185 in
O.D.
5.185 in
Hardened Teeth
With Hardened Teeth
Hub Projection
0.81 in
Type
B
Outside Dia. [Min]
5.1850 in
Hub O.D.
3.563 in
No. of Teeth Rows Strands
1
Bore Type
Bushed
Pitch Dia.
4.794 in
Width Across Teeth
1.25 in
Hub Dia.
3 9/16 in
Inch/Metric
Inch
Sprocket Style
B
Caliper Diameter
4.3253 in
Tooth Width
0.444 in
No. of Strands Across
1
Material Internal Use
Atomized Metals
Overall Length Less Threads
N/A
Material External Use
Steel
Weight
1.38 LB
EAN or UPC
697950043401
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