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