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