SERIES Spherical Roller Bearings -
When using under an operating condition of Fa/Fr >. 0.8, consult NACHI. When using under a fluctuating load condition or at high rotating speed, consult NACHI in advance. If rotated under no load, skidding may occur between the roller and raceway, damaging the bearing. To prevent this condition, a radial load of 0.015 Cr must be applied.