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