1) Make sure that the model is the same with the contract.
2) Make sure the slewing bearing is not damaged during the transportation.
3) Open the package in clean and dry environment.
4) The Bracket should have enough flexility to avoid the distortion of the slewing bearing and influence of its usage.
5)The installation datum plane and bracket installing plane should be clean,grease,burr,paint and other foreign bodys should be wiped off.