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
Martin No.
80BTB20H
Hub Length
1.19 in
Chain Pitch
1.000 in
Bore Size [Max]
2.875 in
Material External Use
Steel
Hub Projection
1.19 in
Outside Dia.
6.914 in
Bushing Series
2517
Chain Sprocket Pitch
1 in
Chain Sprocket Number
80
Bushing Bore Size [Max]
2.875 in
Overall Length Less Threads
N/A
Bushing Type
Taper Lock
Bushing Bore [Max]
2 1/2 in
Length Through Bore
1.75 in
Hub O.D.
4.25 in
No. of Teeth Rows Strands
1
Pitch Diameter
6.393 in
Construction Internal
Welded
No. of Strands Across
1
Bushing Bore [Min]
1/2 in
Type
B
Single Strand Tooth Thickness
0.575 in
Caliper Diameter
5.7675 in
Hardened Teeth
With Hardened Teeth
Tooth Width
0.575 in
Material Internal Use
Carbon Steel
Overall Length
1 3/4 in
No. of Teeth
20
Chain No.
80
Material
Steel
Bore Type
Bushed
Pitch Dia.
6.393 in
Sprocket Style
B
Hub Dia.
4 1/4 in
Width Across Teeth
1.75 in
Outside Dia. [Min]
6.9140 in
O.D.
6.914 in
Inch/Metric
Inch
Weight
5.37 LB
EAN or UPC
697950043593
We're here for you
with Service Centers across the country - We have your back
Find a Service Center
