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
Pitch Dia.
4.466 in
Construction Internal
Solid
Chain Sprocket Number
40
Outside Dia.
4.738 in
Bushing Bore Size [Max]
2.188 in
Bore Size [Max]
2.188 in
Hub O.D.
3 in
Inch/Metric
Inch
Chain Pitch
0.500 in
No. of Teeth Rows Strands
1
Bushing Type
Taper Lock
Material External Use
Steel
Bushing Bore [Min]
0.5 in
Martin No.
40BTB28H
No. of Teeth
28
Overall Length
1 in
Overall Length Less Threads
N/A
Tooth Width
0.284 in
Chain Sprocket Pitch
0.5 in
No. of Strands Across
1
Material
Steel
Pitch Diameter
4.4657 in
Hub Length
0.72 in
O.D.
4.738 in
Hub Dia.
3 in
Type
B
Bushing Series
1610
Length Through Bore
1 in
Chain No.
40
Single Strand Tooth Thickness
0.284 in
Hardened Teeth
With Hardened Teeth
Bore Type
Bushed
Hub Projection
0.72 in
Caliper Diameter
4.1537 in
Outside Dia. [Min]
4.738 in
Material Internal Use
Atomized Metals
Bushing Bore [Max]
1.625 in
Sprocket Style
B
Width Across Teeth
1 in
Weight
1.34 LB
EAN or UPC
697950043128
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