Slewing bearings
Slewing bearings and rolled rings from thyssenkrupp Rothe Erde, plus inspection and service of slewing rings already in operation.
A slewing bearing lets a structure rotate and slew under high load. It is mounted directly against the mating surfaces and usually carries holes that make the fixing quick and stable, which makes it a load-carrying part of the machine rather than one component among others. Pegol supplies slewing bearings from thyssenkrupp Rothe Erde, from standard rings to specially designed rings with a large outer diameter. We work as much with bearings already in operation as with new deliveries, through inspection and service.
The choice of slewing bearing depends on the load case, the rotational speed and how the bearing is to be mounted. It is rarely answerable from a diameter alone.
Tell us what the bearing is going into and how it is loaded, and we will prepare a proposal together with Rothe Erde. If you already have a ring in operation that is getting old, we start with an inspection instead.
Product range
Slewing bearings
From standard rings to specially designed slewing rings with a large outer diameter. Extreme slewing bearings are manufactured in segments to reach the dimensions the application requires. The sizing is done with modern technology, so the bearing is reliable without becoming unnecessarily expensive.
- From thyssenkrupp Rothe Erde
- Standard to specially designed with large outer diameter
- Extreme dimensions produced in segments
- High precision and low turning resistance
Rolled rings
Rolled rings offered alongside the slewing bearing solutions, in the same material quality.
- Offered with the slewing bearing solutions
Service and inspection
Expert service and inspection of slewing rings via thyssenkrupp Rothe Erde. It covers documented maintenance, access to spare parts and on-site support, and applies as much to rings already in operation as to new deliveries.
- Inspection of existing slewing rings
- Documented maintenance and spare parts
- On-site support
Applications
Slewing bearings are used in heavy industrial systems where rotation and slewing movement take place under high loads. A wind turbine holds several bearings: some point the turbine into the wind, others adjust the pitch of the rotor blades.
- Wind turbines
- Cranes and construction machinery
- Mining industry
- Process and manufacturing industry
- Marine technology and offshore
Technical properties
| Range | From standard rings to specially designed slewing rings with a large outer diameter. |
|---|---|
| Extreme dimensions | Extreme slewing bearings are manufactured in segments. |
| Properties | Suited to applications requiring high precision and low turning resistance. |
| Movement and load | Enables rotation and slewing movement under high loads. |
| Mounting | Mounted directly against the mating surfaces, usually with holes for quick and stable installation. |
| Sizing | Economical and reliable sizing using modern technology. |
| Manufacturer | thyssenkrupp Rothe Erde, part of thyssenkrupp AG. |
| Service and inspection | Via thyssenkrupp Rothe Erde, with documented maintenance, access to spare parts and on-site support. |
| Complementary products | Rolled rings are offered alongside the slewing bearing solutions. |
The table describes the range, not an individual bearing. Diameters, bearing types, gearing, load curves and service life calculations are taken from thyssenkrupp Rothe Erde's documentation and worked out per application, since they depend on the load case, the rotational speed and the mounting. Tell us what the bearing is going into and we will calculate it together with Rothe Erde.
Industries where this product is used
Aftermarket for this product
A slewing bearing usually sits where access is most expensive, which makes the aftermarket at least as important as the delivery. Via thyssenkrupp Rothe Erde we offer inspection and service of existing slewing rings, with documented maintenance, access to spare parts and on-site support. This applies to bearings already in operation, which makes it particularly relevant when refurbishing installations that have been running for a long time.
Read more about our aftermarketFrequently asked questions
What is a slewing bearing?
A bearing that lets a structure rotate and slew under high load. It is mounted directly against the mating surfaces and usually carries holes that make installation quick and stable.
Where are slewing bearings used?
In wind turbines, in cranes and construction machinery, in the mining industry's excavators and loaders, in process and manufacturing industry, and in marine technology and offshore, for example in ship cranes and on oil platforms.
How many slewing bearings are there in a wind turbine?
Several. They are used both to point the turbine into the wind and to adjust the pitch of the rotor blades, which is what maximises energy production. They therefore have to withstand both large wind forces and changing weather conditions.
Are special dimensions available?
Yes. The range runs from standard rings to specially designed slewing rings with a large outer diameter, and extreme slewing bearings are manufactured in segments to reach the dimensions the application requires.
Do you service slewing rings that are already installed?
Yes. Via thyssenkrupp Rothe Erde we carry out inspection and service of existing slewing rings, with documented maintenance, access to spare parts and on-site support.
Related terms in the glossary:Slewing bearing
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