Rotary bearing installation method

1. The preparation before installation, 1) Open the packing and the attached certificate and sign on slewing bearing, confirmed in accordance with the selected models. ( 2) Carefully check appearance, confirm the rotary bearing not subjected to large damage in transit, such as serious rust, deformation, etc. ; Confirm whether soft belt and gear beating biggest position marking ( Gear quenching and customers have special requirements) 。 ( 3) Mounting bracket should have enough stiffness, in order to prevent the rotary bearing installation for lack of support stiffness, deformation in rotary bearing cannot work normally. ( 4) The installation surface must be clean, smooth, can not have iron filings, burrs, or other sundry, the plane can best meet the requirements of the following form, Volleyball type) 。 ( 5) Installation of rotary bearing should choose strength registration of bolt. Bolts and nuts shall comply with GB3098. 1 and G B3098. 2 standard requirement, banning the use of spring washer. Installation ( 1) Put the rotary bearing level hanging on the mounting bracket, put soft belt and block position in the load section, often load or light load areas. ( 2) Rotary bearing surface and installation were examined with a feeler contact situation, if there is a gap, should be used to fill the gap of material to enrich its clearance in order to prevent the rotary bearing deformation after the bolt tightening. ( 3) Prestressing force of bolt installation should be enough, the pre-tightening force on the bolt pre-tightening force of bolts should be the yield point of 0. 6 - 0. The scope of seven times. ( 4) Before installation bolt tightening shall be adjusted the size of the gear meshing, as shown in figure 1 ( Lateral clearance) , especially the gear quenching product, should ensure that the rotary bearing gear beating point ( Marked with green paint location) And small gear meshing meets the requirements. ( 5) Tighten the mounting bolts should be symmetrically in the 180 ° direction. ( As shown in figure 2) After installation, 1) After all bolts tightened, should keep clear of in time between the size of the gear, slewing bearing and around all sundry, and ensure the operation with other parts without interference phenomenon. ( 2) Slowly rotating rotary bearing more than 3 weeks, carefully check whether the work is smooth, have the same ring, pause phenomenon and gear mesh size is normal. ( 3) Installed the rotary bearing device, in the above or near the welding operation is not good.