Product Details

The SDE series slew drive device cleverly integrates components such as the vertical axis, electric drive, transmission system, control system and safety device through reasonable structural design, providing an efficient, controllable and safe solution for rotation in the vertical direction. plan.

The design of these structural features can be customized according to the needs of specific applications, ensuring that the vertical slew drive can work effectively in the specific environment and task.

Specification

A slew drive is a piece of engineering equipment usually designed to rotate an object or system in a horizontal or vertical direction. Such devices are used in a wide variety of applications, including industrial machinery, automation systems, scientific research instruments, aerospace devices, and more. The following are the general structural and functional characteristics of the rotary drive:

Electric or hydraulic drive system: The heart of a slew device is its drive system. It can use electric motors, hydraulic motors or other types of drive mechanisms, with different energy types chosen depending on the requirements of the application. This system is responsible for providing the power for rotation.
Axis of rotation: The unit is equipped with one or more axes of rotation, which are arranged in a horizontal or vertical direction, depending on the design of the device. The material and structural design of the shaft must be strong enough to withstand the forces and pressures of rotational motion.

	Model	Output Torque	Tilting Moment Torque	Holding Torque	Gear Ratio	Tracking Precision	Weight	Drawing
SDE21	Azimuth	40 KN.m	200 KN.m	105 KN.m	105:1	≤0.2°	545kg
SDE21	Azimuth	29520 lbf.ft	148×10³ lbf.ft	77×10³ lbf.ft	105:1	≤0.2°	545kg
SDE21	Elevation	43 KN.m	110 KN.m	100 KN.m	105:1	≤0.2°	545kg
SDE21	Elevation	31734 lbf.ft	81×10³ lbf.ft	50×10³ lbf.ft	105:1	≤0.2°	545kg

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.