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