ZZ Slewing Bearing

Skf slewing bearing

As a world-leading slewing bearing manufacturer, ZZ has become a strong alternative to SKF slewing bearings with its excellent product quality and advanced technical capabilities. ZZ focuses on the research and development and manufacture of high-performance slewing bearings. Its products not only meet international industry standards, but also excel in reliability, durability and stability. Its slewing bearing products are widely used in wind power generation, construction machinery, robots, port equipment, mining machinery and other fields, meeting the needs of various complex working conditions. ZZ ensures that the quality of products in all links is strictly controlled through strong production capacity and precision processing equipment, and guarantees its high quality through multiple testing procedures.

 

Skf Slewing Ring

 

In addition to the product itself, ZZ also provides flexible customized solutions, which can design and manufacture exclusive slewing bearings according to the specific needs of customers. The company continues to increase R&D investment, promote technological innovation, and ensure that products can operate stably for a long time in harsh working environments. With a strong R&D team and rich industry experience, ZZ has achieved a great leap in technology. At the same time, ZZ also provides comprehensive after-sales service, responds quickly to customer needs, and has won the trust and long-term cooperation of many customers around the world. Whether in terms of product performance, service support or overall solutions, ZZ can perfectly replace SKF’s slewing bearing products and become another choice for customers in various industries.

Frequently Asked Questions

Expert Insights and Reliable Solutions to Your Most Common Questions.

ZZ Slewing Bearing supplies a full range of slewing bearings to meet different industrial needs:

  • Single row four point contact slewing bearings Application: medium loads, precise rotation.
  • Double row ball bearings  Application: higher radial and axial loads.
  • Cross roller bearings –Application: high rigidity, suitable for robots and machining centers.
  • Three row roller bearings – Application: extreme loads in heavy equipment.
  • Ball combine roller bearings –Application:  precise rotational adjustment applications.
  • Customized bearings – tailored for specific equipment requirements.

Typical selection parameter for ZZ clients:

Load type: axial, radial, and tilting moment.

Rotation RPM: ensures long service life.

Installation space & mounting dimensions: inner/outer ring diameter, bolt circle.

Precision & rigidity requirements: critical for cranes, excavators, and robots.

ZZ engineers provide professional selection guidance according to your equipment and drawings.

ZZ Slewing Bearing selects materials for strength, wear resistance, and long-term durability:

Slewing ring: 42CrMo, 50Mn, C45N, 40CrNiMo, C48E.

Special forging spare parts: carburized/hardened steels for gear teeth (20CrMnTi, 18CrNiMo7‑6).

Corrosion resistant: SS 304, 316L, duplex stainless steel.

Surface treatments: heat treatment, quenching, carburizing, induction hardening, and surface coating(Four-Layer Packing, Strong Anti-Rust Oil, Black Oxide Treatment, Jet Black Paint Finish, Hot-Dip Galvanizing (CGL), Electro-Galvanizing (EGL), Hot-Dip Galvanizing + Paint Finish)

Correct installation with flat surfaces.

Proper lubrication using grease.

Avoid overloading or shock loads over capacity.

Monitor operating conditions regularly to prevent debris entry.

Typical factors observed by ZZ engineers:

  • Insufficient or incorrect lubrication.
  • (dust, metal particles) in raceways.
  • Rolling element or track damage.
  • Uneven mounting surfaces or misalignment.
  • Incorrect bolt torque(below grade 8.8) or preloading.

In-stock: 3–7 days.

Custom: 2–6 weeks depending on size, load, and precision.

Warranty: 1 year

Lifetime Free Spare Parts: Glue, seals, steel ball

Yes — ZZ Slewing Bearing offers:

Detailed installation manuals.

Online engineering support.

Guidance for lubrication, maintenance, and troubleshooting solution.

Full range of materials and heat treatments for various load conditions.

High precision and strict quality inspection standards.

Engineering support before and after delivery.

Customization to exact equipment requirements.

Proven performance in cranes, excavators, robotics, wind turbines, and heavy machinery etc.

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