Slewing bearing installation method

1. Preparation before installation

(1) Unpack and check the attached certificate and the Slewing Bearing sign to confirm that it is consistent with the selected model.
(2) Carefully check the appearance and confirm that the slewing bearing is not subjected to major damage during transportation, such as severe corrosion, deformation, etc.; confirm the presence or absence of the soft belt mark and the maximum position mark of the gear jump (the gear requires quenching or the customer has special requirements) ).
(3) The mounting bracket should have sufficient rigidity to prevent the slewing bearing from being installed due to insufficient rigidity of the bracket and deformation caused by the slewing bearing.

(4) The installation plane must be clean and flat, and must not have iron filings, burrs or other debris.

(5) For the installation of the Slewing Ring, the bolts with the strength registration should be selected. Bolts and nuts shall comply with the requirements of GB3098.1 and G B3098.2. Spring washers are prohibited.


(1) Place the slewing bearing horizontally on the mounting bracket, and place the soft belt and the blocking position in the non-load zone, the non-frequent load zone or the light load zone.
(2) Check the contact between the slewing bearing plane and the mounting plane with a feeler gauge. If there is a gap, the material should be filled with the material to fill the gap to prevent the slewing bearing from deforming after the bolt is tightened.
(3) The mounting bolts should have sufficient pre-tightening force, and the pre-tightening force generated by the pre-tightening force on the bolts should be within the range of 0.6-0.7 times of the yield point of the bolts.
(4) Before the mounting bolts are tightened, the large and small gears must be meshed and adjusted. As shown in Figure 1 (side clearance), especially for gear quenching products, the maximum point of the Slewing Ring Gear (marked with green paint) should be meshed with the pinion. Meet the requirements.
(5) Tighten the mounting bolts symmetrically in the 180° direction.