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
Chain Sprocket Number
80
Hub Recess Depth
0.15 in
Bore Type
Bushed
Outside Dia.
4.332 in
Caliper Diameter
3.2387 in
Hub Recess Width
0.28 in
Bushing Type
Taper Lock
O.D.
4.332 in
Hardened Teeth
With Hardened Teeth
Single Strand Tooth Thickness
0.575 in
No. of Teeth
12
Martin No.
80BTB12H
Construction Internal
Solid With Recess Groove
Hub OD @ Recess
2.7 in
Overall Length
1 1/2 in
Hub Dia.
3 in
Hub Recessed
1
Bore Size [Min]
0.5 in
Hub Length
0.93 in
Inch/Metric
Inch
Chain Sprocket Pitch
1 in
Outside Dia. [Min]
4.3320 in
Material
Steel
Hub Projection
0.93 in
Chain Pitch
1.000 in
Bore Size [Max]
1.625 in
Type
B
Pitch Diameter
3.864 in
No. of Strands Across
1
Hub O.D.
3 in
Material External Use
Steel
Bushing Bore Size [Min]
0.5 in
Chain No.
80
Material Internal Use
Carbon Steel
Overall Length Less Threads
N/A
No. of Teeth Rows Strands
1
Tooth Width
0.575 in
Sprocket Style
B
Length Through Bore
1.5 in
Bushing Series
1615
Bushing Bore [Min]
0.5 in
Bushing Bore Size [Max]
1.625 in
Bushing Bore [Max]
1 5/8 in
Width Across Teeth
1.5 in
Pitch Dia.
3.864 in
Weight
1.88 LB
EAN or UPC
697950043517
We're here for you
with Service Centers across the country - We have your back
Find a Service Center
