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
Outside Dia. [Min]
3.9200 in
Inch/Metric
Inch
Sprocket Style
B
Bushing Bore [Max]
1 5/8 in
Construction Internal
Solid
Bushing Bore Size [Min]
0.5 in
Bore Size [Max]
1.625 in
Martin No.
50BTB18H
Bushing Type
Taper Lock
Bushing Bore [Min]
0.5 in
Hub Dia.
2.7813 in
Tooth Width
0.343 in
Bushing Bore Size [Max]
1.625 in
No. of Teeth
18
O.D.
3.92 in
Pitch Diameter
3.599 in
Chain Pitch
0.625 in
Chain No.
50
No. of Teeth Rows Strands
1
Bushing Series
1610
Overall Length Less Threads
N/A
Single Strand Tooth Thickness
0.343 in
Outside Dia.
3.92 in
Material External Use
Steel
Caliper Diameter
3.1992 in
Width Across Teeth
1 in
Bore Type
Bushed
No. of Strands Across
1
Type
B
Overall Length
1 5/8 in
Hardened Teeth
With Hardened Teeth
Chain Sprocket Pitch
0.625 in
Hub Length
0.66 in
Length Through Bore
1 in
Pitch Dia.
3.599 in
Hub Projection
0.66 in
Hub O.D.
2.781 in
Chain Sprocket Number
50
Material Internal Use
Carbon Steel
Material
Steel
Bore Size [Min]
0.5 in
Weight
0.94 LB
EAN or UPC
697950043203
We're here for you
with Service Centers across the country - We have your back
Find a Service Center
