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