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 [Min]
1/2 in
Construction Internal
Solid
O.D.
5.722 in
Bore Size [Max]
2.063 in
Bushing Bore Size [Max]
2.063 in
Bore Type
Bushed
Hub Dia.
3 9/16 in
Inch/Metric
Inch
Chain Pitch
0.625 in
No. of Teeth Rows Strands
1
Bushing Type
Taper Lock
No. of Strands Across
1
Overall Length Less Threads
N/A
Bushing Bore [Max]
2 in
Material External Use
Steel
Martin No.
50BTB27H
Length Through Bore
1.25 in
Hub Projection
0.91 in
Pitch Diameter
5.384 in
Hardened Teeth
With Hardened Teeth
Tooth Width
0.343 in
Chain Sprocket Pitch
0.625 in
No. of Teeth
27
Material
Steel
Chain Sprocket Number
50
Caliper Diameter
4.9745 in
Outside Dia.
5.722 in
Bushing Series
2012
Hub O.D.
3.563 in
Pitch Dia.
5.384 in
Chain No.
50
Single Strand Tooth Thickness
0.343 in
Sprocket Style
B
Material Internal Use
Atomized Metals
Width Across Teeth
1.25 in
Overall Length
2 in
Type
B
Hub Length
0.91 in
Outside Dia. [Min]
5.7220 in
Weight
2.6 LB
EAN or UPC
697950065656
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