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