Features: 1) Spherical function, two rows of spherical rollers, a common groove on outer ring, two grooves on inner ring that tilts in an angle to the bearing center 2) Works when the axle distorted or assembled 3) Bearing size can changed, the spherical range: 1°- 2. 5° 4) Can bear bigger load, not only the radical load but also two direction radical load with better anti-shock abilities 5) W33 type: spherical roller bearing with a groove and 3 oil hole outer ring added, and also oil hole machined inner rings available