Slewing Drive – at the heart of what we do
ZZ has profound expertise and technical advantages in this field. By providing high-performance and stable slewing drive products, it can provide efficient solutions for customers in engineering machinery, solar tracking systems, lifting equipment and other application fields. Focusing on the business development of slewing drives will not only help improve market competitiveness, but also meet the growing industry needs.
Want to know more about selecting slewing drive?
The slewing drive is a highly integrated transmission device designed to combine slewing motion with torque output. Its core components include slewing bearings, worm or gear transmission systems, and drive motors or hydraulic systems. The slewing drive has the characteristics of compact structure, strong load-bearing capacity, high slewing accuracy, and can work stably for a long time under harsh working conditions.
Se Series Slewing Drive
The Series SE/PE is a robust enclosed-gearing slewing drive solution equipped for low duty cycle, low-speed (<1 RPM) applications.
Sde Series Slewing Drive
Hour-glass worm for competitive gear contact and life, and high static load capacity
Ve Series Slewing Drive
The Series VE Slew Drive is a robust enclosed-gearing vertical slewing drive solution equipped for low-speed (<1 RPM) outdoor applications.
W Series Slewing Drive
Open series gear contact area is large, output torque is stronger. For the convenience of customer’s use and maintenance.
We Series Slewing Drive
The Series WE is a robust enclosed-gearing slewing drive solution equipped for high duty cycle, medium-speed (<2.5 RPM) applications.
Wea 2 Series Slewing Drive
The Series WEA-2 is a robust enclosed-gearing slewing drive solution, featuring dual-worm technology for superior dynamic and static torque capacity,
ZZ Slewing Bearing
More and more industries choose ZZ
We are constantly improving and innovating to make your application more efficient and faster!
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.