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Slewing Bearings

FRUSCA slewing bearings (also named antifriction bearing, slew ring) are mechanical components made of two drilled rings and an internal rolling system to stand simultaneously axial and radial loads, tilting moments, also of considerable values. The fixing holes and the simple manufacturing shape of the slew bearings, permit and easy mounting and a sensible cost reduction for the manufacturing of the companion structures.

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FRUSCA SRL technically supports its Customer in developing of standard slew bearings from catalogues and made on drawing, from diameter 100mm to 6200mm, in different manufacturing shapes from Module 2.

TYPE OF SLEWING BEARINGS

The slew bearings, depending on manufacturing shape, have different specific applications.

FRUSCA SRL offers a prepared technical staff for the support in the choice of the slew bearing most suitable for Your needs.

Manufacturing shapes of the slew bearing:

ONE ROW BALL BEARINGS

They are available in full square rings or flanged version, light or heavy series.
The slew bearing with full square rings, for medium-high loads, are used in application as cranes, excavators, wind generators, amusement rides, etc..
The slew bearings of the light series, for medium-low loads, are used in applications as packaging, filling machines, welding systems, robots, rotating tables, water treatment bridges, ecology wagons, etc..

  • Four point contact one row ball bearing without gear with square rings
  • Four point contact one row ball bearing with external gear with square rings
  • Four point contact one row ball bearing with inner gear with square rings
  • Four point contact one row ball bearing light series without gear
  • Four point contact one row ball bearing light series with external gear
  • Four point contact one row ball bearing light series with inner gear
DOUBLE ROW BALL BEARINGS

They are used to stand high axial loads and tilting moments, in applications with reduced radial spaced as cranes, truck cranes, tower cranes, etc.

  • Double row ball bearing without gear
  • Double row ball bearing with external gear
  • Double row ball bearing with inner gear
CROSSED ROLLER BEARINGS

They are used in application with low, medium and high loads but where is necessary high rigidity, precision and low clearances, as in robots, welding positioners, radar, antenna, ecc..

  • Crossed roller bearing without gear
  • Crossed roller bearing with external gear
  • Crossed roller bearing with inner gear
TRIPLE ROW ROLLER BEARINGS

They are used in applications with high axial loads and tilting moments, as in port cranes, ladle turrets, EAF and LF furnaces, stacker reclaimer, tunneling boring machines, TBM, etc..

  • Triple row roller bearings without gear
  • Triple row roller bearings with external gear
  • Triple row roller bearings with inner gear
SPECIAL BEARINGS MADE ON DRAWING

They are developed on job, depending on Your needs. We can supply pre-loaded slew bearings or with specific play on request.

For high temperature applications we supply slewing bearings with cages or spacers in Steel and Viton seals.

For high speed applications we supply slewing bearings with a modified rolling system, with straight or inclined teeth with hardened and ground teeth.

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