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
Bushing Bore Size [Max]
3.063 in
Outside Dia.
8.642 in
Chain No.
100
O.D.
8.642 in
No. of Teeth
20
Type
B
Inch/Metric
Inch
Hub O.D.
4.5 in
Bushing Type
Taper Lock
Tooth Width
0.692 in
Chain Sprocket Pitch
1.25 in
Hub Projection
1.06 in
No. of Strands Across
1
Material External Use
Steel
Width Across Teeth
1.75 in
Caliper Diameter
7.2406 in
Hub Dia.
4 1/2 in
Bushing Bore [Min]
1/2 in
Length Through Bore
1.75 in
Sprocket Style
B
Material Internal Use
Carbon Steel
Construction Internal
Welded
Bore Size [Max]
3.063 in
Overall Length
1 3/4 in
Martin No.
100BTB20H
Chain Sprocket Number
100
Bushing Bore [Max]
2 1/2 in
Pitch Dia.
7.991 in
Bore Type
Bushed
Bushing Series
2517
Hardened Teeth
With Hardened Teeth
Pitch Diameter
7.991 in
Outside Dia. [Min]
8.6420 in
Single Strand Tooth Thickness
0.692 in
Hub Length
1.06 in
Material
Steel
No. of Teeth Rows Strands
1
Weight
9.73 LB
EAN or UPC
697950043760
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