Product Details

Slew drives have important applications in various fields. They can provide flexibility, precision and efficiency to meet the needs of different equipment and systems.

Heavy Duty: Slew drives are designed to handle or withstand large loads or forces. In mechanical engineering, heavy duty generally refers to equipment that needs to operate or transmit forces under high load conditions.
Exoskeleton: A slew drive structure with a skeleton or frame on the outside, which may be used to support, strengthen, and protect internal components.
Rotary reducer: Mainly used to reduce the rotation speed of the input shaft and increase the torque of the output shaft. This usually involves a gear drive system.

Specification

For use in places with high humidity outdoors or indoors, such as the seaside, desert, etc., the WEA series rotary reducer is a product optimization and upgrade on the WE series. It adopts a fully sealed structure design to meet your requirements for outdoor use.

Solar thermal and photovoltaic outdoor tracking sun power station
Rotation of aerial work vehicle chassis
Drive the boom of the truck-mounted crane to rotate
Customized designs available

Aerospace industry: Slewing bearings are also commonly used in systems such as aircraft and spacecraft landing gear, navigation radars, and communication antennas.

Model	Output Torque	Tilting Moment Torque	Holding Torque	Gear Ratio	Tracking Precision	Weight	Drawing
WEA25	34.2 KN.m	310 KN.m	158.3 KN.m	104:1	≤0.1°	202kg
WEA25	25240 lbf.ft	229×10³ lbf.ft	117×10³ lbf.ft	104:1	≤0.1°	202kg

Frequently Asked Questions

Expert Insights and Reliable Solutions to Your Most Common Questions.

1. What types of slewing bearings does ZZ Slewing Bearing provide?

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.

2. How do I choose the right bearing for my application?

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.

3. What materials does ZZ Slewing Bearing use for slewing bearings?

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)

4. How can ZZ Slewing Bearing achieve maximum service life?

Correct installation with flat surfaces.

Proper lubrication using grease.

Avoid overloading or shock loads over capacity.

Monitor operating conditions regularly to prevent debris entry.

5. What causes abnormal noise or vibration in bearings?

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.

6. What are lead times and lifetime guarantee?

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

7. Does ZZ provide installation and technical support?

Yes — ZZ Slewing Bearing offers:

Detailed installation manuals.

Online engineering support.

Guidance for lubrication, maintenance, and troubleshooting solution.

8. How do ZZ Slewing Bearing differ from competitors?

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.

ZZ Slewing Bearing (Shanghai) Co., Ltd

Leading Slew Drive & Slewing Bearing Manufacturer in China.

ZZ products are applied globally in solar tracking systems, wind power systems, satellite communications, and numerous other globally connected industries.