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