Slewing bearing with single-row ball design
Four-Point Contact Ball Slewing Bearings
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The four-point contact ball slewing bearing is designed with rolling elements and raceway for point contact. With compact structure and flexible rotation, the slewing bearing not only can simultaneously withstand axial load, radial load, overturning moment, but also can withstand a single direction load.
A notable advantage of this bearing type is its smaller cross-sectional size and lighter weight compared to other bearings, which doesn't compromise its ability to manage significant loads. Typically, these bearings are made from 42CrMo4 steel with the raceways hardened through an induction process to enhance durability. However, depending on the specific needs of the application, other materials can be used to meet different performance requirements.
Manufacturing Capability
LYXQL has developed significant expertise in manufacturing four-point contact ball slewing bearings, demonstrating advanced capabilities in both integrated and split structures. Our manufacturing capacity includes producing bearings with an outer diameter of up to 12 meters for integrated structures and up to 20 meters for split structures.
We are also equipped to handle a wide range of gear module sizes, with a maximum module of 45 and a minimum of 4.
(We are capable of customizing non-standard products based on specific customer requirements.)
Options of Slewing Bearings
Slewing bearings are available in three main configurations: external gear, internal gear, and gearless designs. Each of these configurations consists of rings (both inner and outer), steel balls, spacers (also known as bearing cages), and seals. Depending on the application, additional dust-proofing features, such as dust covers or ash shields, can be added.
This type features gear teeth on the outer ring, making it suitable for applications where the gear mesh occurs externally. Due to the external positioning of the gears, this design generally requires more installation space compared to internal gear slewing rings.
In this design, the gear teeth are located on the inner ring, allowing the gear mesh to occur inside the bearing. This configuration is more space-efficient, as it requires less installation space compared to external gear designs, making it suitable for applications where space is limited.
This gearless design features smooth inner and outer rings without any gear teeth. It is typically used in applications where gear interaction is not needed, offering a simpler and more straightforward solution.
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Our main products include wind turbine main bearings, yaw bearings, pitch bearings, gearbox bearings, marine equipment slewing bearings, tunnel boring machine bearings and components, wind turbine shrink discs, and high-speed couplings.
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