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NSK slewing bearing FAQS

QWhat types of Single row four point contact slewing bearing ？

ASingle row four point contact slewing bearing (01series) The single-row four-point contact ball type slewing bearing consists of two rings. The structure is compacted and weight is light. The steel ball is in contact with the arc track at four points and can withstand axial force, radial force and titling moment. Rotary conveyor welding machine Small and medium-sized cranes and excavators can be used.applications:Small cranes,Industrial positioners,Rotary tables,Rotatingdisplays,Bottlingmachines,Conveyors. Single row four point contact ball slewing ring (Q series) The same four-point contact design as our single-row four-point contact ball slewing ring (01 series) is more thinner and provides excellent torque, thrust and radial load capacity. Ideal for applications such as truck mounted cranes, cranes and non-precision industrial work benches etc.applications:Cranes &Manipulators,Aerial lifts,Wind turbines,Position/Index tables, Radar & Satellite, antennas,Robots, Medical equipment. Single row four point contact ball slewing ring (HS series) The HS series can be customized to meet the user's different working conditions and normal working conditions in the environment, providing excellent axial, radial and titling moments. Mainly used in radar, military turrets, machine tools and excavators. application:Radar & Satellite, antennas,Turrets,Machine tools, Excavators.

QHow we pack slewing bearing to avoid any damage during transport. ?

AOur slewing rings are carefully packed in order to avoid any damage during transport. Transport and storage are to be carried out in horizontal position only; transport in other positions requires special methods. As with any mechanical precision part, the rings must be handled with care avoiding any shocks, particularly along the radial axis. Handling should be carried out with suitable equipment for the weight of the part, which is indicated on the identification tag.

QHow to install slewing bearing ?

AStructure • Make sure that supporting structures comply with specifications (see STRUCTURES). • Check for chips, weld seam particles, corrosion signs, etc. • Check the good mating of the rings on the supports. SPIGOTS When loads along the radial axis are important, especially when the bearing is placed vertically, it is then mandatory to use the centerings provided for that purpose. The intercalative structural adhesive type LOCTITE 586 provides a good means to limit the relative displacements between rings and supports. See our technical instructions IT ETR 521, available upon request. POSITIONING The hardening junction which is marked by a red line on the geared 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 (see MARKING).

QHow to select our slewing bearing ?

AWe designs and manufactures slewing rings and special bearings for a lot of applications. Standard or specific, our engineering department is able to propose the best slewing ring for your application. Our subsidiary and agent network present in more than 60 countries will help you in that choice and throughout the bearing's lifetime.