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
Bushing Bore [Max]
1 in
No. of Teeth Rows Strands
1
Hub Recessed
1
Bushing Series
1008
Sprocket Style
B
Bore Type
Bushed
Caliper Diameter
2.0148 in
Hub Projection
0.55 in
Width Across Teeth
0.875 in
Type
B
O.D.
2.708 in
Bore Size [Min]
0.5 in
Chain No.
50
No. of Teeth
12
Chain Pitch
0.625 in
Overall Length Less Threads
N/A
Pitch Dia.
2.415 in
Bushing Bore [Min]
0.5 in
Chain Sprocket Pitch
0.625 in
Overall Length
7/8 in
Outside Dia. [Min]
2.7080 in
Hardened Teeth
With Hardened Teeth
Material
Steel
Material External Use
Steel
Chain Sprocket Number
50
Hub Dia.
1 15/16 in
Inch/Metric
Inch
Bushing Bore Size [Max]
1 in
Bushing Bore Size [Min]
0.5 in
Bore Size [Max]
1 in
Bushing Type
Taper Lock
Hub Recess Width
0.22 in
Pitch Diameter
2.415 in
No. of Strands Across
1
Hub Length
0.55 in
Single Strand Tooth Thickness
0.343 in
Tooth Width
0.343 in
Hub O.D.
1.938 in
Material Internal Use
Carbon Steel
Construction Internal
Solid With Recess Groove
Hub OD @ Recess
1.67 in
Hub Recess Depth
0.13 in
Length Through Bore
0.875 in
Martin No.
50BTB12H
Outside Dia.
2.708 in
Weight
0.44 LB
EAN or UPC
697950043142
We're here for you
with Service Centers across the country - We have your back
Find a Service Center
