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’ QD bushings
Stocked Heat Treat
Material Internal Use
Carbon Steel
Inch/Metric
Inch
Overall Length Less Threads
N/A
No. of Strands Across
1
Hub Projection
0.31 in
Tooth Width
0.459 in
Bushing Bore Size [Max]
2 in
Material External Use
Steel
Hub Dia.
3 1/4 in
Outside Dia. [Min]
6.3870 in
Bore Size [Min]
0.5 in
Bore Type
Bushed
Bushing Type
QD
Hub Length
0.31 in
Pitch Dia.
5.984 in
Width Across Teeth
0.459 in
Outside Dia.
6.387 in
Chain Sprocket Number
60
Hub O.D.
3.25 in
Martin No.
60SDS25H
Chain No.
60
Bushing Bore Size [Min]
0.5 in
Overall Length
3/4 in
Hardened Teeth
With Hardened Teeth
Construction Internal
Welded
Bushing Series
SDS
Chain Pitch
0.750 in
Sprocket Style
B
Bushing Bore [Min]
0.5 in
Bore Size [Max]
2 in
Chain Sprocket Pitch
0.75 in
No. of Teeth
25
No. of Teeth Rows Strands
1
Screw Size
1/4-20 UNC
Length Through Bore
0.75 in
Material
Steel
Type
B
Single Strand Tooth Thickness
0.459 in
Caliper Diameter
5.5032 in
O.D.
6.387 in
Pitch Diameter
5.984 in
Bushing Bore [Max]
2 in
Weight
3.24 LB
EAN or UPC
697950042053
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