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