Product Details

The enclosed structure also reduces noise and vibration generated during gear movement. The closed housing can effectively absorb and isolate vibration, making the mechanical system run more smoothly and with lower noise levels. This is particularly important for applications that are sensitive to noise and vibration, such as office equipment and some precision instruments.

However, enclosed gear slew drives also face some challenges. Its maintenance is relatively difficult because the outer shell needs to be opened to inspect and maintain the internal mechanical components. In addition, since the shell of a closed structure is usually thick and heavy, it may increase the weight of the entire system, making it unsuitable for some application scenarios that require high lightweighting.

In general, closed gear slew drives have shown broad application prospects in many fields due to their effective isolation, protection and noise reduction. In the future, with the continuous advancement of materials and manufacturing technology, enclosed gear rotary drives are expected to further optimize performance and adapt to a wider range of engineering needs.

Specification

WE-25 Slew Drive,Enclosed geared slew drives play an important role in many industrial and mechanical applications due to their advantages in protecting gears, transmission systems and the environment. In different application scenarios, engineers choose different types of slew drive systems according to specific needs to ensure efficient operation and long life of the mechanical system.. The following are the characteristics and some related information of enclosed gear slew drives:

Model	Output Torque	Tilting Moment Torque	Holding Torque	Gear Ratio	Tracking Precision	Weight	Drawing
WE25	34.2 KN.m	310 KN.m	158.3 KN.m	104:1	≤0.1°	199kg
WE25	25240 lbf.ft	229×10³ lbf.ft	117×10³ lbf.ft	104:1	≤0.1°	199kg

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.