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