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Part Number 240/670YMBW33W45C6, Spherical Roller Bearings - Brass Cage

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Spherical bearings are designed to manage high radial loads even when misalignment, poor lubrication, contamination, extreme speeds or critical application stresses are present.




Specifications  · Dimensions  · Abutment and Fillet Dimensions  · Basic Load Ratings  · Factors

Specifications

Design Unit
Metric

d - Bore
670 mm

Cage Type
YMB

Cage Material
Brass


Dimensions

D - Outer Diameter
980 mm
38.583 in

B' - Inner Ring Width
308 mm
12.126 in

B - Outer Ring Width
308 mm
12.1260 in


Abutment and Fillet Dimensions

R - Inner Ring "To Clear" Radius1
6 mm
0.24 in

r - Outer Ring "To Clear" Radius2
6 mm
0.24 in

da - Inner Ring Backing Diameter
738.000 mm
29.000 in

Da - Outer Ring Backing Diameter
910 mm
35.800 in
1 Maximum housing fillet radius that bearing corners will clear.
2 Maximum shaft fillet radius that bearing corners will clear.


Basic Load Ratings

C0 - Static Radial Rating
21800000 N
4910000 lbf

C1(2) - Dynamic Radial Rating (Two-Rows)
10200000 N
2300000 lbf


Factors

e - ISO Factor1
0.28

Y0 - ISO Factor2
2.33

Y1 - ISO Factor3
2.39

Y2 - ISO Factor4
3.55

Reference Thermal Speed Rating (Grease)
230 rpm

Reference Thermal Speed Rating (Oil)5
240 rpm

Cg - Geometry Factor6
0.1256
1 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
2 These factors apply for both inch and metric calculations. See engineering
3 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
4 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
5 See thermal speed ratings in the engineering section.
6 Geometry constant for Lubrication Life Adjustment Factor a3l.


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