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
Bushing Bore [Min]
0.938 in
Overall Length Less Threads
N/A
Pitch Dia.
6.393 in
No. of Teeth
20
Hardened Teeth
With Hardened Teeth
Pitch Diameter
6.390 in
Type
B
Sprocket Style
B
Single Strand Tooth Thickness
0.557 in
Chain No.
80-2
Bore Type
Bushed
Chain Sprocket Pitch
1 in
Hub Projection
0.3 in
Construction Internal
Solid
Length Through Bore
2 in
Bushing Series
3020
Tooth Width
0.557 in
Bushing Bore [Max]
3 in
No. of Teeth Rows Strands
2
Width Across Teeth
1.71 in
Chain Sprocket Number
80
O.D.
6.914 in
Bushing Bore Size [Max]
3 in
Overall Length
2 in
Hub O.D.
5.25 in
Hub Length
0.3 in
Material External Use
Steel
Martin No.
80BTB20H
Bushing Bore Size [Min]
0.938 in
Inch/Metric
Inch
Material
Steel
Material Internal Use
Carbon Steel
Outside Dia. [Min]
6.9140 in
Hub Dia.
5 1/4 in
Bushing Type
Taper Lock
No. of Strands Across
2
Caliper Diameter
5.77 in
Bore Size [Min]
0.938 in
Chain Pitch
1.000 in
Bore Size [Max]
3 in
Outside Dia.
6.914 in
Weight
7.08 LB
EAN or UPC
697950032467
We're here for you
with Service Centers across the country - We have your back
Find a Service Center
