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