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