Product Details

The fully enclosed design of the SEA series slew drive improves the durability of the system and effectively protects key components from the external environment. Such mechanical systems are widely used in construction, mining, agriculture, ports and manufacturing, providing strong support for mechanized operations. At the same time, the rotary drive plays a vital role in improving work efficiency and adapting to diverse work needs by improving efficiency, saving space, and increasing working range.

Specification

Precise positioning is another important function of slew drive systems. Mechanical equipment can accurately stay in the required position through rotary drive, making various delicate work tasks possible. On construction sites, for example, the accurate positioning of tower cranes can ensure that building materials are accurately placed at the target location, improving the efficiency and safety of construction.

Flexibility and adaptability are the distinguishing features of slew drive systems. This technology allows mechanical equipment to adapt to different working environments and needs. In the agricultural field, tractors are equipped with a slew drive system that allows the cab and working equipment to rotate, allowing farmers to easily perform field operations. In ports, cranes and quay cranes use slewing drive systems to rotate in the horizontal direction to improve the efficiency of loading and unloading cargo.

Model	Output Torque	Tilting Moment Torque	Holding Torque	Gear Ratio	Tracking Precision	Weight
SEA17	10 KN.m	135.6 KN.m	58 KN.m	102:1	≤0.17°	88kg
SEA17	7400 lbf.ft	100×10³ lbf.ft	42.8×10³ lbf.ft	102:1	≤0.17°	88kg
PEA17	10 KN.m	135.6 KN.m	58 KN.m	102:1	≤0.09°	88kg
PEA17	7400 lbf.ft	100×10³ lbf.ft	42.8×10³ lbf.ft	102:1	≤0.09°	88kg

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.