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
Single Strand Tooth Thickness
0.343 in
Inch/Metric
Inch
Chain No.
50
Outside Dia. [Min]
4.7220 in
Hub Projection
0.66 in
No. of Strands Across
1
Bore Size [Max]
2.063 in
Overall Length Less Threads
N/A
Bushing Type
Taper Lock
Pitch Diameter
4.392 in
Hardened Teeth
With Hardened Teeth
Type
B
Chain Sprocket Pitch
0.625 in
Construction Internal
Solid
Hub O.D.
3 in
Chain Sprocket Number
50
Sprocket Style
B
Outside Dia.
4.722 in
Hub Dia.
3 in
Bushing Bore Size [Max]
2.063 in
Material Internal Use
Atomized Metals
Length Through Bore
1 in
Bushing Bore [Min]
1/2 in
No. of Teeth Rows Strands
1
Width Across Teeth
1 in
Material External Use
Steel
Bore Type
Bushed
O.D.
4.722 in
Pitch Dia.
4.392 in
Hub Length
0.66 in
Caliper Diameter
3.9917 in
Bushing Bore [Max]
2 in
Tooth Width
0.343 in
Material
Steel
Chain Pitch
0.625 in
No. of Teeth
22
Bushing Series
1610
Overall Length
1 5/8 in
Martin No.
50BTB22H
Weight
1.34 LB
EAN or UPC
697950043241
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