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
Sprocket Style
B
Material External Use
Steel
Bushing Bore [Min]
0.5 in
Single Strand Tooth Thickness
0.575 in
Hub Dia.
2.4688 in
Inch/Metric
Inch
Hardened Teeth
With Hardened Teeth
No. of Strands Across
1
Hub Projection
0.93 in
Chain Sprocket Number
80
No. of Teeth Rows Strands
1
Bushing Series
1215
Overall Length Less Threads
N/A
Width Across Teeth
1.5 in
Type
B
Outside Dia.
4.006 in
Material Internal Use
Carbon Steel
Bore Size [Max]
1.25 in
Chain Sprocket Pitch
1 in
Bore Type
Bushed
Hub Recess Width
0.28 in
Bushing Type
Taper Lock
Hub OD @ Recess
2.38 in
Overall Length
1 1/2 in
Chain No.
80
Outside Dia. [Min]
4.0060 in
Pitch Dia.
3.55 in
Bushing Bore Size [Max]
1.25 in
Bore Size [Min]
0.5 in
Bushing Bore Size [Min]
0.5 in
Length Through Bore
1.5 in
Pitch Diameter
3.550 in
Hub Length
0.93 in
No. of Teeth
11
Tooth Width
0.575 in
Material
Steel
Chain Pitch
1.000 in
Caliper Diameter
2.8884 in
Hub Recessed
1
Martin No.
80BTB11H
Construction Internal
Solid With Recess Groove
Hub O.D.
2.469 in
O.D.
4.006 in
Hub Recess Depth
0.05 in
Bushing Bore [Max]
1 1/4 in
Weight
1.56 LB
EAN or UPC
697950043500
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