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