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