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
Material Internal Use
Atomized Metals
Hub O.D.
3.25 in
Pitch Dia.
3.995 in
Hub Projection
0.66 in
Hub Dia.
3 1/4 in
Overall Length Less Threads
N/A
Bushing Series
1610
Length Through Bore
1 in
Outside Dia.
4.321 in
No. of Teeth Rows Strands
1
Bushing Bore [Min]
1/2 in
Material External Use
Steel
Martin No.
50BTB20H
No. of Strands Across
1
Single Strand Tooth Thickness
0.343 in
Construction Internal
Solid
No. of Teeth
20
Bushing Bore Size [Max]
2.063 in
Inch/Metric
Inch
Chain Sprocket Number
50
Overall Length
1 5/8 in
Bushing Bore [Max]
1 5/8 in
Material
Steel
Pitch Diameter
3.995 in
Width Across Teeth
1 in
Hub Length
0.66 in
Caliper Diameter
3.5953 in
Bushing Type
Taper Lock
Chain Pitch
0.625 in
Sprocket Style
B
Chain No.
50
Outside Dia. [Min]
4.3210 in
O.D.
4.321 in
Hardened Teeth
With Hardened Teeth
Tooth Width
0.343 in
Chain Sprocket Pitch
0.625 in
Bore Type
Bushed
Type
B
Bore Size [Max]
2.063 in
Weight
1.34 LB
EAN or UPC
697950043227
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