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