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’ split-taper bushings
Inch/Metric
Inch
Hub Length
0.48 in
Sprocket Style
B
Pitch Dia.
3.989 in
Chain Sprocket Number
40
Pitch Diameter
3.9894 in
O.D.
4.258 in
Material
Steel
Key Way Size
0.375 in
Bushing Bore [Min]
0.5 in
Keyway Size
0.375 in
Chain Sprocket Pitch
0.5 in
Hub Dia.
3 in
Hub O.D.
3 in
Tooth Width
0.275 in
Bushing Bore Size [Min]
0.5 in
Material Internal Use
Carbon Steel
Single Strand Tooth Thickness
0.275 in
Keyway
w/Keyway
Hardened Teeth
With Hardened Teeth
Bore Size [Max]
1.75 in
Bushing Type
Split Taper
Width Across Teeth
0.841 in
Caliper Diameter
3.6695 in
Chain No.
40-2
No. of Strands Across
2
Outside Dia.
4.258 in
Chain Pitch
0.500 in
No. of Teeth Rows Strands
2
Bushing Bore [Max]
1.75 in
Construction Internal
Solid
Overall Length
2.1875 in
Bore Type
Bushed
Type
12
Length Through Bore
1.313 in
Material External Use
Steel
No. of Teeth
25
Bore Size [Min]
0.5 in
Overall Length Less Threads
N/A
Bushing Series
P1
Hub Projection
0.48 in
Bushing Bore Size [Max]
1.75 in
Outside Dia. [Min]
4.258 in
Weight
2.41 LB
EAN or UPC
697950209753
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