Cautions Of Slewing Bearing Installation

Support Structure ? Make sure that supporting structures comply with specifications ? Check for chips, weld seam particles, corrosion signs or any other dirt etc. ? Check the good matching of the rings on the supports centering ring When loads along the slewing bearing radial axis are important, especially when the slewing bearingis placed vertically, it is then mandatory to use the centering ring to fix the bearing in position. The structural adhesive provides a good means to limit the relative displacements between slewing bearing and supports. Positioning The hardening junction which is marked by a red/green line or S point on the geared slewing ring, and located at the filler plug on the other ring, must be placed at 90? to the main load axis or to the arm supporting the load. 

Fastening ? Check that fasteners are of the recommended grade, e.g. make a mark on the head and that threads are Properly lubricated. ? For bearings the use of treated hardened flat washers is required as follows: The elastic washers type Belleville (also known as a cupped spring washer, is a type of non-flat washer) , Grower or others of whatever type or pattern are absolutely prohibited and will void all warranty. ? Install all fasteners and tighten lightly. ? Then tighten to the specified value using a properly calibrated torque wrench; hydraulic devices are advisable. ? The bolts must be carefully preloaded crosswise to the specified values. To ensures a uniform tightening over the whole circle. The tightening torque to be applied is defined with recommended figure.