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