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