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
Hardened Teeth
With Hardened Teeth
Bushing Bore [Min]
7/8 in
Chain No.
100
Bore Size [Max]
3.438 in
Martin No.
100BTB28H
No. of Teeth Rows Strands
1
Chain Pitch
1.250 in
Overall Length
2 in
Material
Steel
Inch/Metric
Inch
Bushing Bore [Max]
3 in
Caliper Diameter
10.4143 in
Material Internal Use
Carbon Steel
Hub Projection
1.31 in
No. of Strands Across
1
Bushing Series
3020
Bushing Bore Size [Max]
3.438 in
Outside Dia. [Min]
11.8440 in
Material External Use
Steel
Chain Sprocket Number
100
Width Across Teeth
2 in
Bore Type
Bushed
Length Through Bore
2 in
Pitch Diameter
11.164 in
Hub Length
1.31 in
No. of Teeth
28
Pitch Dia.
11.164 in
Hub O.D.
5.25 in
Sprocket Style
B
Overall Length Less Threads
N/A
O.D.
11.844 in
Tooth Width
0.692 in
Outside Dia.
11.844 in
Hub Dia.
5 1/4 in
Chain Sprocket Pitch
1.25 in
Construction Internal
Welded
Bushing Type
Taper Lock
Type
B
Single Strand Tooth Thickness
0.692 in
Weight
21.11 LB
EAN or UPC
697950065700
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