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