[Asia Pump Network News] Rolling is a type of fluorine-lined centrifugal pump, then daily, how to carry out fluorine-based centrifugal pump roller bearing overhaul it? What kind of bearing these technical standards? With these two questions, Next, we introduce fluorine fluorine centrifugal pump bearing repair methods and technical standards. Fluorine centrifugal pump bearing repair methods and technical standards 1, bearing and shaft with the use of base-hole system, bearing and shell with the use of the base axis system. Bearing size tolerances and rotational accuracy of the value according to the provisions of GB307-84. 2, with the journal bearings and bearing housing bore hole according to the provisions of GB1031-83, journal roughness Ra value of less than 1.6μm, bearing housing hole roughness Ra value of less than 2.5μm. 3, with GCr15 and ZGCr15 steel bearing rings and rollers, the hardness value of the ferrule and roller should be 61 ~ 65HRC; with GCr15SiMn and ZGCr15SiMn steel, the hardness value should be 60 ~ 64HRC. The hardness of the inspection methods and the hardness of the same parts according to the provisions of JB1255. 4, check the bearing radial clearance and axial clearance should be consistent with the provisions of GB4604-84. 5, rolling bearing inner and outer raceway raceway should be free from flaking, serious wear and tear, the inner and outer rings are not allowed to crack; Ball should be no wear and tear, cage no serious deformation, rotation no abnormal noise and vibration, stop gradually stop. 6, for C-class tolerance tapered roller bearings, roller and raceway raceway contact accuracy, under the action of a certain load, the color check, contact traces should be continuous, contact length should not be less than 80 of the roller bus. Extended reading: China Construction Water Exhibition water pump manufacturers rankings ptc exhibition motor top ten brands pump valve pipe fittings Show Information Industry Internet (Xiamen) Technology Co., Ltd. Asia Pump Network Editor: He Duanhui (QQ / WeChat:) http: // mj .liuti.cn / (Service Hotline:)
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