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