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