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