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 Rows Strands
1
O.D.
6.321 in
No. of Strands Across
1
Bushing Bore [Min]
1/2 in
Hub Dia.
3 9/16 in
Chain Sprocket Number
50
Bushing Bore [Max]
2 in
Caliper Diameter
5.5792 in
Length Through Bore
1.25 in
Width Across Teeth
1.25 in
Bore Size [Max]
2.188 in
Chain Sprocket Pitch
0.625 in
Type
B
Outside Dia.
6.321 in
No. of Teeth
30
Bore Type
Bushed
Inch/Metric
Inch
Hub Projection
0.91 in
Tooth Width
0.343 in
Hub Length
0.91 in
Material Internal Use
Carbon Steel
Overall Length
2 in
Chain No.
50
Bushing Bore Size [Max]
2.188 in
Sprocket Style
B
Hardened Teeth
With Hardened Teeth
Overall Length Less Threads
N/A
Pitch Dia.
5.979 in
Single Strand Tooth Thickness
0.343 in
Pitch Diameter
5.979 in
Material External Use
Steel
Chain Pitch
0.625 in
Bushing Series
2012
Material
Steel
Martin No.
50BTB30H
Outside Dia. [Min]
6.3210 in
Hub O.D.
3.563 in
Construction Internal
Welded
Bushing Type
Taper Lock
Weight
3.1 LB
EAN or UPC
697950043302
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