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
Caliper Diameter
3.5953 in
Chain Sprocket Pitch
0.625 in
Inch/Metric
Inch
Hardened Teeth
With Hardened Teeth
Bore Size [Max]
2 in
Hub Dia.
3 1/4 in
Length Through Bore
0.75 in
Construction Internal
Solid
Screw Size
1/4-20 UNC
Chain No.
50
Type
B
Bushing Bore Size [Max]
2 in
Bushing Series
SDS
Tooth Width
0.343 in
Pitch Diameter
3.995 in
Overall Length Less Threads
N/A
Bushing Bore [Min]
0.5 in
Chain Pitch
0.625 in
Material
Steel
Material Internal Use
Carbon Steel
No. of Teeth
20
Chain Sprocket Number
50
Bore Size [Min]
0.5 in
Pitch Dia.
3.995 in
Outside Dia.
4.321 in
Bushing Bore Size [Min]
0.5 in
Width Across Teeth
0.343 in
Overall Length
3/4 in
Sprocket Style
B
Material External Use
Steel
Bore Type
Bushed
Single Strand Tooth Thickness
0.343 in
Bushing Bore [Max]
2 in
Outside Dia. [Min]
4.3210 in
No. of Teeth Rows Strands
1
Bushing Type
QD
Hub Length
0.41 in
No. of Strands Across
1
O.D.
4.321 in
Hub O.D.
3.25 in
Hub Projection
0.41 in
Martin No.
50SDS20H
Weight
1.27 LB
EAN or UPC
697950041810
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