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