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