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