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