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