ZZ Slewing Bearing

Slew drive for solar tracker

 

 

Slew Drive Manufacturers

ModelOutput TorqueTilting Moment TorqueHolding TorqueGear RatioTracking PrecisionWeightDrawing
VE1018 KN.m8500 N.m75 KN.m80:1≤0.3°88kg
VE1013284 lbf.ft6273 lbf.ft55350 lbf.ft80:1≤0.3°88kg

Slew drives for solar trackers are essential for maximizing the efficiency of solar energy systems. These devices enable precise rotation and tilting of solar panels, ensuring they consistently face the sun to capture maximum sunlight throughout the day. This dynamic tracking significantly boosts energy production and system efficiency.

Key features of slew drives include high torque capacity, allowing them to handle the heavy loads of large solar panels even in adverse weather conditions. They offer precise control for accurate sun tracking, which is crucial for optimizing energy capture.

Durability is a major advantage of these drives. Constructed from robust materials and featuring sealed enclosures, they withstand harsh environmental conditions like extreme temperatures, moisture, and dust. This ensures long service life and minimal maintenance, which is vital for the economic viability of solar projects.

Slew drives often come with integrated motors, gears, and housing units, providing a compact and efficient solution. Some advanced models include sensors and control systems for automated and remote adjustments, enhancing the solar tracking process.

By maintaining optimal panel orientation, reliable slew drives improve the efficiency and lifespan of solar installations, making them a critical component in sustainable energy systems.

Frequently Asked Questions

Expert Insights and Reliable Solutions to Your Most Common Questions.

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.

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.

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)

Correct installation with flat surfaces.

Proper lubrication using grease.

Avoid overloading or shock loads over capacity.

Monitor operating conditions regularly to prevent debris entry.

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.

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

Yes — ZZ Slewing Bearing offers:

Detailed installation manuals.

Online engineering support.

Guidance for lubrication, maintenance, and troubleshooting solution.

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.

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