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