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
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
Inch/Metric
Inch
Hardened Teeth
With Hardened Teeth
Hub O.D.
2.375 in
Bore Size [Min]
0.5 in
Bushing Series
1210
Overall Length
1 in
Hub Recess Depth
0.09 in
Bushing Bore [Min]
0.5 in
Pitch Diameter
2.7211 in
Hub Recess Width
0.19 in
Hub Recessed
1
Material
Steel
Bore Type
Bushed
Length Through Bore
1 in
Hub Length
0.72 in
Construction Internal
Solid With Recess Groove
Type
B
No. of Strands Across
1
Sprocket Style
B
Caliper Diameter
2.3975 in
Chain Sprocket Number
40
Material External Use
Steel
Chain Pitch
0.500 in
Hub Projection
0.72 in
Bushing Bore Size [Max]
1.25 in
No. of Teeth
17
Bushing Bore [Max]
1.25 in
Overall Length Less Threads
N/A
Bushing Bore Size [Min]
0.5 in
Chain Sprocket Pitch
0.5 in
Hub Dia.
2 3/8 in
Outside Dia.
2.975 in
Width Across Teeth
1 in
Chain No.
40
No. of Teeth Rows Strands
1
Outside Dia. [Min]
2.975 in
O.D.
2.975 in
Martin No.
40BTB17H
Single Strand Tooth Thickness
0.284 in
Bushing Type
Taper Lock
Bore Size [Max]
1.25 in
Pitch Dia.
2.721 in
Tooth Width
0.284 in
Hub OD @ Recess
2.2 in
Material Internal Use
Carbon Steel
Weight
0.54 LB
EAN or UPC
697950043029
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