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