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
Hardened teeth sprockets afford longer chain and sprocket life
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 Series
3020
Hub Length
1.31 in
No. of Teeth
30
Chain No.
100
Tooth Width
0.692 in
Pitch Diameter
11.959 in
Outside Dia. [Min]
12.6430 in
Caliper Diameter
11.2085 in
Pitch Dia.
11.959 in
Length Through Bore
2 in
Bushing Type
Taper Lock
Hub Dia.
5 1/4 in
O.D.
12.643 in
Hub Projection
1.31 in
Material Internal Use
Carbon Steel
Bore Type
Bushed
Overall Length Less Threads
N/A
Chain Pitch
1.250 in
No. of Strands Across
1
Single Strand Tooth Thickness
0.692 in
Martin No.
100BTB30H
Inch/Metric
Inch
Material External Use
Steel
No. of Teeth Rows Strands
1
Material
Steel
Hardened Teeth
With Hardened Teeth
Bushing Bore [Max]
3 in
Construction Internal
Welded
Chain Sprocket Number
100
Overall Length
2 in
Bushing Bore Size [Max]
3.438 in
Hub O.D.
5.25 in
Outside Dia.
12.643 in
Bore Size [Max]
3.438 in
Sprocket Style
B
Chain Sprocket Pitch
1.25 in
Bushing Bore [Min]
7/8 in
Width Across Teeth
2 in
Type
B
Weight
24.06 LB
EAN or UPC
697950043814
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