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
Hub O.D.
3.953 in
Hardened Teeth
With Hardened Teeth
Material Internal Use
Carbon Steel
Overall Length
1 3/4 in
No. of Teeth Rows Strands
2
Pitch Diameter
4.790 in
Overall Length Less Threads
N/A
No. of Teeth
20
Bushing Type
Taper Lock
Bushing Bore Size [Max]
2.5 in
Chain No.
60-2
No. of Strands Across
2
Bore Type
Bushed
Bore Size [Min]
0.5 in
Hub Dia.
3.9531 in
Material
Steel
Chain Sprocket Pitch
0.75 in
Bushing Bore Size [Min]
0.5 in
Martin No.
60BTB20H
Outside Dia.
5.185 in
Chain Sprocket Number
60
Bore Size [Max]
2.5 in
O.D.
5.185 in
Sprocket Style
B
Tooth Width
0.444 in
Width Across Teeth
1.341 in
Construction Internal
Solid
Length Through Bore
1.75 in
Bushing Series
2517
Bushing Bore [Min]
0.5 in
Single Strand Tooth Thickness
0.444 in
Chain Pitch
0.750 in
Caliper Diameter
4.33 in
Pitch Dia.
4.794 in
Outside Dia. [Min]
5.1850 in
Hub Projection
0.41 in
Type
B
Bushing Bore [Max]
2 1/2 in
Inch/Metric
Inch
Hub Length
0.41 in
Material External Use
Steel
Weight
3.12 LB
EAN or UPC
697950031989
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