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
No. of Teeth
19
Material Internal Use
Carbon Steel
Bore Size [Min]
0.5 in
Hardened Teeth
With Hardened Teeth
Martin No.
80SK19H
Bushing Type
QD
Caliper Diameter
5.4297 in
Bushing Bore Size [Max]
2.625 in
Tooth Width
0.575 in
Chain Sprocket Number
80
Construction Internal
Welded
Material
Steel
Length Through Bore
1.25 in
Chain Sprocket Pitch
1 in
Hub Projection
0.69 in
Pitch Dia.
6.076 in
Bushing Bore Size [Min]
0.5 in
No. of Teeth Rows Strands
1
Width Across Teeth
0.575 in
Bore Type
Bushed
No. of Strands Across
1
Outside Dia.
6.593 in
Single Strand Tooth Thickness
0.575 in
Bore Size [Max]
2.625 in
Bushing Series
SK
Outside Dia. [Min]
6.5930 in
Inch/Metric
Inch
Screw Size
5/16-18 UNC
Bushing Bore [Min]
0.5 in
Chain No.
80
Hub Dia.
4 in
Hub Length
0.69 in
Overall Length Less Threads
N/A
Material External Use
Steel
Sprocket Style
B
Bushing Bore [Max]
2 5/8 in
O.D.
6.593 in
Overall Length
1 1/4 in
Pitch Diameter
6.076 in
Chain Pitch
1.000 in
Hub O.D.
4 in
Type
B
Weight
4.38 LB
EAN or UPC
697950042183
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