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
Length Through Bore
1.25 in
Bushing Type
Taper Lock
Sprocket Style
B
Outside Dia. [Min]
6.3870 in
Bushing Bore [Max]
2 in
Caliper Diameter
5.5032 in
Construction Internal
Welded
Hub Length
0.81 in
Hub Projection
0.81 in
Width Across Teeth
1.25 in
Material Internal Use
Carbon Steel
Bore Type
Bushed
Tooth Width
0.444 in
Material External Use
Steel
Chain No.
60
Bushing Bore Size [Max]
2.75 in
Outside Dia.
6.387 in
Overall Length Less Threads
N/A
Material
Steel
Hub O.D.
3.563 in
Hub Dia.
3 9/16 in
Chain Sprocket Pitch
0.75 in
Bushing Series
2012
Bushing Bore [Min]
1/2 in
Single Strand Tooth Thickness
0.444 in
Bore Size [Max]
2.75 in
Pitch Dia.
5.984 in
Pitch Diameter
5.984 in
Inch/Metric
Inch
O.D.
6.387 in
Type
B
Overall Length
1 1/4 in
Chain Pitch
0.750 in
Martin No.
60BTB25H
Hardened Teeth
With Hardened Teeth
No. of Strands Across
1
No. of Teeth
25
No. of Teeth Rows Strands
1
Chain Sprocket Number
60
Weight
3.66 LB
EAN or UPC
697950043456
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