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 Wafangdian ZWZ self-aligning roller bearings are divided into: a cylindrical bore, tapered bore. 
 Wafangdian ZWZ self-aligning roller bearings tapered bore taper 1:12, respectively, post-code-named K-aligning roller bearings (153 000-or 113 000 type) and 1:30 of the post-code the tone for the K30 Spherical roller bearings. This type of bearing with a shaft with a conical, the inner ring can be adjusted along the axial movement of the bearing radial clearance.