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
Pitch Dia.
5.032 in
Bushing Bore [Min]
0.5 in
Material
Steel
Tooth Width
0.444 in
Bushing Bore [Max]
2 1/2 in
Bore Size [Max]
2.5 in
Length Through Bore
1.75 in
No. of Teeth Rows Strands
2
Hub Projection
0.41 in
Caliper Diameter
4.55 in
Single Strand Tooth Thickness
0.444 in
Hub Length
0.41 in
Bore Type
Bushed
Martin No.
60BTB21H
Material Internal Use
Carbon Steel
Chain Sprocket Pitch
0.75 in
Bushing Series
2517
Width Across Teeth
1.341 in
Sprocket Style
B
Chain No.
60-2
O.D.
5.426 in
Bushing Type
Taper Lock
Outside Dia. [Min]
5.4260 in
No. of Strands Across
2
Chain Pitch
0.750 in
Outside Dia.
5.426 in
Bushing Bore Size [Min]
0.5 in
Material External Use
Steel
Chain Sprocket Number
60
Bore Size [Min]
0.5 in
Hub Dia.
4 3/16 in
Hardened Teeth
With Hardened Teeth
Overall Length Less Threads
N/A
No. of Teeth
21
Inch/Metric
Inch
Construction Internal
Solid
Hub O.D.
4.188 in
Overall Length
1 3/4 in
Type
B
Bushing Bore Size [Max]
2.5 in
Pitch Diameter
5.030 in
Weight
3.76 LB
EAN or UPC
697950031996
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