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