Bearing in pile-driving and drilling machines

Sector: Construction machines, civil engineering

Pile-driving and drilling machines must function reliably.
When used outdoors on building sites, the swivel joints of the leaders and their bearing positions are subjected to harsh conditions, such as high temperature fluctuations, moisture and dirt. When pile-driving, impacts and shocks subject the bearing position to stress.
Bearing with KS PERMAGLIDE® P2 plain bearing bushes and P2 thrust washers
During the application, the pins of the swivel joint bearing run in two plain bearing bushes. Two thrust washers are located between the arms of the joint. The material KS Permaglide® P200 is recommended for the plain bearing bushes and thrust washers.
The plain bearings tolerate misalignment of the rough welded construction.
In combination with grease lubrication, the sliding layer has a dampening effect, which significantly reduces vibrations and impacts from reaching the hydraulic excavator.

Advantages of KS PERMAGLIDE® P200  plain bearings

  • Insensitivity to shocks and impacts
  • Insensitive to edge loads
  • Good damping characteristics
  • High wear resistance
  • Insensitivity to dirt
  • Low moisture absorption
  • Operating temperature range of –40 °C to 110 °C
  • Low-maintenance operation with lubrication
  • Lead-free
  • Compliant with wDirective 2011/65/EU (RoHS II)
Application description
Tubes, posts or guide rails are driven into the ground using pile-driving machines. Drilling machines are used for drilling bores in specialist civil engineering, tunnelling, canal construction and for drilling water wells or geothermal wells. In combined pile-driving and drilling systems, either a hydraulic hammer or a
boring machine is mounted on a telescopic leader. The leader is attached to the outrigger of the hydraulic excavator. The hydraulic hammer or boring machine runs up and down the leader. The link piece between the leader and excavator takes the form of an articulated bearing. The leader is straightened laterally by free swivelling motions in this way.
Description of the joint bearing
Joint bearings are articulated bearing elements based on plain bearings. Joint bearings allow swivelling motions, rotary motions and tilting motions and transfer static and dynamic forces. Maintenancefree joint bearings or joint bearings that can be re-lubricated are used depending on the applicati
Information about the products