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
Bore Size [Max]
2.75 in
Inch/Metric
Inch
Bushing Type
Taper Lock
Sprocket Style
B
Caliper Diameter
6.7061 in
Chain Pitch
0.750 in
Single Strand Tooth Thickness
0.444 in
Length Through Bore
1.25 in
Bushing Bore [Max]
2 in
Outside Dia.
7.586 in
Bushing Bore [Min]
1/2 in
Construction Internal
Welded
Hub Length
0.81 in
Overall Length Less Threads
N/A
Bushing Series
2012
No. of Teeth Rows Strands
1
Material External Use
Steel
Hub Projection
0.81 in
O.D.
7.586 in
Chain Sprocket Number
60
Pitch Dia.
7.175 in
Outside Dia. [Min]
7.5860 in
Pitch Diameter
7.175 in
Overall Length
1 1/4 in
No. of Teeth
30
Width Across Teeth
1.25 in
Hub Dia.
3 9/16 in
Chain No.
60
Material Internal Use
Carbon Steel
Hardened Teeth
With Hardened Teeth
Martin No.
60BTB30H
Hub O.D.
3.563 in
Tooth Width
0.444 in
No. of Strands Across
1
Bore Type
Bushed
Type
B
Chain Sprocket Pitch
0.75 in
Bushing Bore Size [Max]
2.75 in
Material
Steel
Weight
5.18 LB
EAN or UPC
697950043487
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