Part Number 231/530KYMBW906A, Spherical Roller Bearings

Longer bearing life achieved from higher capacity (vs. competitors)
Longer lubrication life achieved from lower operating temperatures due to reduced internal friction and running torque from cage guided rollers
Better contaminant purging from slots on cage face helps extend bearing life
Greater fatigue strength and increased wear resistance provide tougher protection against shock and acceleration loading from a brass cage

Unit of Measure

Key Dimensions | Other Dimensions | Ratings | Factors

Bore (d)	N/A 530 mm
O.D. (D)	N/A 870 mm34.2520 in
Width (B)	N/A 272 mm10.7090 in
Dynamic Radial Load Rating - 1M Revs (C1)	N/A 8530000 N1920000 lbf
e Factor ¹	N/A 0.3
UPC Code	N/A 087796161269

Max Shaft Fillet Radius²	N/A 6 mm0.24 in
Shaft Backing Shoulder Diameter	N/A 603.000 mm23.700 in
Housing Backing Shoulder Diameter	N/A 793.000 mm31.200 in
Design Unit	N/A Metric
Bore_Taper	N/A 1/12
Cage Type	N/A YMB
Cage Material	N/A Brass

Static Radial Load Rating (C0)	N/A 15100000 N3400000 lbf
Thermal Reference Speed - Oil ³	N/A 340 rpm
Thermal Reference Speed - Grease	N/A 320 rpm

¹ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
² Maximum housing fillet radius that bearing corners will clear.
³ See thermal speed ratings in the engineering section.
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 Geometry constant for Lubrication Life Adjustment Factor a3l.

Bore (d)