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