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
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 Type
Taper Lock
No. of Teeth Rows Strands
1
Hub Length
0.72 in
Pitch Diameter
4.7834 in
Material Internal Use
Atomized Metals
No. of Strands Across
1
Single Strand Tooth Thickness
0.284 in
Width Across Teeth
1 in
Outside Dia.
5.057 in
Material
Steel
Tooth Width
0.284 in
Caliper Diameter
4.4714 in
Hub Projection
0.72 in
Chain Sprocket Pitch
0.5 in
Hub Dia.
3 in
Hub O.D.
3 in
Bushing Series
1610
Overall Length
1 in
Hardened Teeth
With Hardened Teeth
Bushing Bore [Min]
0.5 in
Chain Pitch
0.500 in
Chain Sprocket Number
40
No. of Teeth
30
Bushing Bore Size [Max]
2.188 in
Bore Size [Max]
2.188 in
Bore Type
Bushed
Martin No.
40BTB30H
Inch/Metric
Inch
Length Through Bore
1 in
Material External Use
Steel
O.D.
5.057 in
Bushing Bore [Max]
1.625 in
Overall Length Less Threads
N/A
Chain No.
40
Outside Dia. [Min]
5.057 in
Construction Internal
Solid
Type
B
Pitch Dia.
4.783 in
Sprocket Style
B
Weight
1.34 LB
EAN or UPC
697950043135
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