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