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
Inch/Metric
Inch
No. of Strands Across
1
Material Internal Use
Carbon Steel
Sprocket Style
B
Chain Sprocket Pitch
0.75 in
Overall Length
1 1/4 in
Material External Use
Steel
Chain Sprocket Number
60
Length Through Bore
1.25 in
Hub Dia.
3 9/16 in
Bushing Bore [Max]
2 in
Bushing Bore Size [Max]
2.75 in
Pitch Diameter
6.699 in
Bore Size [Max]
2.75 in
Bushing Type
Taper Lock
Construction Internal
Welded
Bore Type
Bushed
Chain Pitch
0.750 in
Martin No.
60BTB28H
Outside Dia. [Min]
7.1060 in
No. of Teeth Rows Strands
1
Caliper Diameter
6.2296 in
Bushing Bore [Min]
1/2 in
Hub Length
0.81 in
Chain No.
60
Hardened Teeth
With Hardened Teeth
Single Strand Tooth Thickness
0.444 in
Overall Length Less Threads
N/A
Type
B
Tooth Width
0.444 in
Pitch Dia.
6.699 in
Outside Dia.
7.106 in
Hub Projection
0.81 in
Width Across Teeth
1.25 in
Bushing Series
2012
Material
Steel
No. of Teeth
28
O.D.
7.106 in
Hub O.D.
3.563 in
Weight
4.62 LB
EAN or UPC
697950043470
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