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 Series
2012
Material
Steel
Hub O.D.
3.563 in
Caliper Diameter
4.549 in
Chain Sprocket Pitch
0.75 in
Hub Dia.
3 9/16 in
Hub Length
0.81 in
Chain Sprocket Number
60
Pitch Diameter
5.032 in
O.D.
5.426 in
Sprocket Style
B
Material External Use
Steel
No. of Teeth
21
Bore Type
Bushed
Width Across Teeth
1.25 in
Outside Dia.
5.426 in
Bushing Bore [Min]
1/2 in
Martin No.
60BTB21H
Construction Internal
Solid
Pitch Dia.
5.032 in
Outside Dia. [Min]
5.4260 in
Tooth Width
0.444 in
Overall Length Less Threads
N/A
Inch/Metric
Inch
Bushing Type
Taper Lock
Bushing Bore Size [Max]
2.75 in
Chain No.
60
Bore Size [Max]
2.75 in
Bushing Bore [Max]
2 in
Material Internal Use
Atomized Metals
Length Through Bore
1.25 in
No. of Strands Across
1
Chain Pitch
0.750 in
Type
B
No. of Teeth Rows Strands
1
Hub Projection
0.81 in
Overall Length
1 1/4 in
Single Strand Tooth Thickness
0.444 in
Hardened Teeth
With Hardened Teeth
Weight
1.34 LB
EAN or UPC
697950043418
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