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
Overall Length
3.15625 in
No. of Teeth Rows Strands
1
Hub Projection
1.08 in
Overall Length Less Threads
N/A
Outside Dia. [Min]
12.66 in
Material
Steel
Bushing Bore Size [Min]
1.125 in
Construction Internal
Welded
Pitch Dia.
11.742 in
Chain No.
140
Bushing Series
R1
Chain Sprocket Number
140
Pitch Diameter
11.7416 in
O.D.
12.66 in
Keyway Size
0.75 in
Hub Dia.
5 1/2 in
Single Strand Tooth Thickness
0.924 in
Bushing Type
Split Taper
Chain Pitch
1.750 in
Bushing Bore [Max]
3.75 in
Length Through Bore
2 in
Bore Type
Bushed
Hardened Teeth
With Hardened Teeth
Caliper Diameter
10.7088 in
Key Way Size
0.75 in
Hub Length
1.08 in
Material Internal Use
Carbon Steel
Sprocket Style
B
Bore Size [Max]
3.75 in
Bushing Bore Size [Max]
3.75 in
Type
B
Bushing Bore [Min]
1.125 in
Width Across Teeth
0.924 in
No. of Strands Across
1
Outside Dia.
12.66 in
Chain Sprocket Pitch
1.75 in
Hub O.D.
5.5 in
No. of Teeth
21
Keyway
w/Keyway
Material External Use
Steel
Tooth Width
0.924 in
Bore Size [Min]
1.125 in
Weight
26.07 LB
EAN or UPC
697950125824
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