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