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