Product Details

The SDE7 slew drive device is a specially designed mechanical or electric device whose main function is to make an object rotate in the vertical direction. Its structural features cover several key components to ensure precision, stability and controllability of rotation.

At the heart of the device is the vertical axis design. The vertical axis is the main body of the device and is responsible for withstanding the forces and pressures caused by the rotational movement. To ensure stability and smooth rotation, the vertical shaft is equipped with a specially designed bearing system that reduces friction and provides support.

Specification

The structural features of SDE slew drives can vary depending on the application field and specific requirements, but in general, such devices may include the following structural features:

Vertical axis design: Equipment is often designed to include a vertical axis to allow rotation in the vertical direction. The design of vertical shafts requires force and support considerations, often using specially designed bearing systems.
Electric Drive System: Typically includes an electric motor to provide power for rotation. This may be an electric motor connected directly to the vertical shaft, or power is transferred to the vertical shaft through a drivetrain.
Transmission system: used to transfer the rotation of the electric motor to the vertical axis. The transmission system can include gears, belts, chains, etc., which are selected based on specific needs.

	Model	Output Torque	Tilting Moment Torque	Holding Torque	Gear Ratio	Tracking Precision	Weight	Drawing
SDE7	Azimuth	1500 N.m	13500 N.m	10400 N.m	73:1	≤0.2°	58kg
SDE7	Azimuth	1107 lbf.ft	9957 lbf.ft	7671 lbf.ft	73:1	≤0.2°	58kg
SDE7	Elevation	2000 N.m	10 KN.m	9000 N.m	28:1	≤0.2°	58kg
SDE7	Elevation	1476 lbf.ft	7380 lbf.ft	6642 lbf.ft	28:1	≤0.2°	58kg

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.