The Timken Company - Spherical Roller Bearings - Case Carburized Inner Rings and Rollers (W40I,W40R,W906A)

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Case Carburized Inner Rings and Rollers (W40I,W40R,W906A) - (Common in Paper industry applications)
Spherical bearings are designed to manage high radial loads even when misalignment, poor lubrication, contamination, extreme speeds or critical application stresses are present.

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Unit of Measure

Items	230/500KYMBW906A Spherical Roller Bearings - Brass Cage	230/500KYMBW906AC3 Spherical Roller Bearings - Brass Cage	230/530KYMBW40IW534C3 Spherical Roller Bearings - Brass Cage	230/530KYMBW906A Spherical Roller Bearings - Brass Cage	230/530KYMBW906AC3 Spherical Roller Bearings - Brass Cage
Design Unit	N/A Metric
d - Bore	N/A 500 mm	N/A 500 mm	N/A 530 mm	N/A 530 mm	N/A 530 mm
D - Outer Diameter	N/A 720 mm28.3470 in	N/A 720 mm28.3470 in	N/A 780 mm30.709 in	N/A 780 mm30.709 in	N/A 780 mm30.709 in
B' - Inner Ring Width	N/A 167 mm6.575 in	N/A 167 mm6.575 in	N/A 185 mm7.284 in	N/A 185 mm7.284 in	N/A 185 mm7.284 in
B - Outer Ring Width	N/A 167 mm6.5750 in	N/A 167 mm6.5750 in	N/A 185 mm7.2840 in	N/A 185 mm7.2840 in	N/A 185 mm7.2840 in
Bore_Taper	N/A 1/12
R - Inner Ring "To Clear" Radius¹	N/A 5 mm0.200 in
r - Outer Ring "To Clear" Radius²	N/A 5 mm0.200 in
da - Inner Ring Backing Diameter	N/A 550.000 mm21.700 in	N/A 550.000 mm21.700 in	N/A 588.000 mm23.2000 in	N/A 588.000 mm23.2000 in	N/A 588.000 mm23.2000 in
Da - Outer Ring Backing Diameter	N/A 673.000 mm26.500 in	N/A 673.000 mm26.500 in	N/A 725.000 mm28.600 in	N/A 725.000 mm28.600 in	N/A 725.000 mm28.600 in
C0 - Static Radial Rating	N/A 8160000 N1840000 lbf	N/A 8160000 N1840000 lbf	N/A 9720000 N2190000 lbf	N/A 9720000 N2190000 lbf	N/A 9720000 N2190000 lbf
C1(2) - Dynamic Radial Rating (Two-Rows)	N/A 4290000 N965000 lbf	N/A 4290000 N965000 lbf	N/A 5150000 N1160000 lbf	N/A 5150000 N1160000 lbf	N/A 5150000 N1160000 lbf
e - ISO Factor³	N/A 0.21
Y0 - ISO Factor⁴	N/A 3.18	N/A 3.18	N/A 3.07	N/A 3.07	N/A 3.07
Y1 - ISO Factor⁵	N/A 3.26	N/A 3.26	N/A 3.14	N/A 3.14	N/A 3.14
Y2 - ISO Factor⁶	N/A 4.85	N/A 4.85	N/A 4.68	N/A 4.68	N/A 4.68
Reference Thermal Speed Rating (Grease)	N/A 510 rpm	N/A 510 rpm	N/A 460 rpm	N/A 460 rpm	N/A 460 rpm
Reference Thermal Speed Rating (Oil)⁷	N/A 580 rpm	N/A 580 rpm	N/A 530 rpm	N/A 530 rpm	N/A 530 rpm
Cg - Geometry Factor⁸	N/A 0.1037	N/A 0.1037	N/A 0.1083	N/A 0.1083	N/A 0.1083
Bearing Weight	N/A 222.00 Kg488.40 lb	N/A 222.00 Kg488.40 lb	N/A 302.60 Kg665.70 lb	N/A 302.60 Kg665.70 lb	N/A 302.60 Kg665.70 lb
Cage Type	N/A YMB
UPC Code	N/A 087796029262	N/A 087796187931	N/A 087796200333	N/A 087796197626	N/A 087796139909
Cage Material	N/A Brass
Superseded Part	N/A
¹ Maximum housing fillet radius that bearing corners will clear. ² Maximum shaft fillet radius that bearing corners will clear. 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. See engineering ⁵ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. ⁶ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. ⁷ See thermal speed ratings in the engineering section. ⁸ Geometry constant for Lubrication Life Adjustment Factor a3l.