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
0.81 in
Caliper Diameter
5.9804 in
Sprocket Style
B
Hub Dia.
3 9/16 in
Length Through Bore
1.25 in
Single Strand Tooth Thickness
0.444 in
Bushing Type
Taper Lock
Outside Dia.
6.867 in
Pitch Dia.
6.46 in
Material Internal Use
Carbon Steel
Outside Dia. [Min]
6.8670 in
Width Across Teeth
1.25 in
Pitch Diameter
6.460 in
Hub Length
0.81 in
Overall Length Less Threads
N/A
Construction Internal
Welded
Type
B
Bushing Series
2012
Overall Length
1 1/4 in
Bore Type
Bushed
O.D.
6.867 in
Martin No.
60BTB27H
Chain Pitch
0.750 in
Tooth Width
0.444 in
Bushing Bore [Min]
1/2 in
No. of Teeth Rows Strands
1
Material External Use
Steel
Bore Size [Max]
2.75 in
Bushing Bore Size [Max]
2.75 in
Hardened Teeth
With Hardened Teeth
Bushing Bore [Max]
2 in
Chain Sprocket Pitch
0.75 in
Chain Sprocket Number
60
Inch/Metric
Inch
Chain No.
60
Material
Steel
Hub O.D.
3.563 in
No. of Strands Across
1
No. of Teeth
27
Weight
4.3 LB
EAN or UPC
697950065663
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