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