Small Slewing Bearing

Small Slewing Bearing – Precision Rotary Solutions for Compact Applications

Product Details

When your equipment demands precise rotation in limited space, a Small Slewing Bearing delivers the solution. These compact rotary components are engineered to handle combined axial, radial, and moment loads simultaneously while providing smooth 360° rotation. Designed for applications where space is at a premium, these bearings integrate complete rotational functionality into a single unit. Whether you're building an industrial robot arm, precision turntable, or medical imaging system, our product range offers the performance and reliability your application requires.

Our small-bore slewing bearings are offered in two core designs: the versatile four-point contact ball type for general applications, and the crossed roller type for superior rigidity, precision, and higher moment load capacity. Both designs provide high rotational accuracy and stiffness within a minimal installation space, making them the optimal choice for advanced robotics, precision automation, and compact machinery.

Why Choose Us?

 Deep Industry Expertise

With over 20 years of specialization, we are based in Luoyang—China's bearing industry capital. Our dedicated team of 50+ engineers focuses exclusively on the design and manufacture of high-precision slewing bearings.

Proven Manufacturing & Quality

Our ISO 9001 certified facility ensures products meet DIN, ISO, and GB standards. Equipped with CNC machining centers, Gear cutting, and precision grinding equipment, we guarantee consistent quality and accuracy in every batch.

Full Customization & Engineering

We provide complete custom solutions, including design, non-standard machining, and reverse engineering from physical samples, ensuring a perfect fit for your unique application, even without original drawings.

Global Application Experience

Our products are trusted in over 50 countries across major industrial regions. This global perspective allows us to understand and meet diverse technical and regulatory demands.

End-to-End Technical Partnership

We offer lifelong support, from initial selection and installation to maintenance planning. Our engineers partner with you to analyze your needs and recommend the most reliable and cost-effective solution.

Certification

Technical Specifications

​​​​​​​Features and Benefits

Space-Saving Integration

The integrated design combines radial bearing, thrust bearing, and structural support into one compact unit. This reduces your equipment's overall size and weight, simplifying assembly and lowering installation costs.

Multi-Directional Load Handling

Unlike conventional bearings, these units simultaneously manage axial forces, radial forces, and overturning moments. This eliminates the need for multiple bearing arrangements and complex support structures.

High Rotational Accuracy

Precision-ground raceways and carefully selected rolling elements ensure minimal runout and smooth rotation. This accuracy is essential for optical equipment, measurement devices, and robotic positioning systems.

Robust Construction

High-carbon chromium bearing steel (GCr15) provides excellent wear resistance and fatigue life. Heat treatment processes optimize hardness and dimensional stability under continuous operation.

Gear Integration Options

When specified with internal or external gearing, the bearing becomes a complete drive system. This simplifies your design by eliminating separate gear components and reducing backlash.

Sealed Protection

Optional sealing configurations protect internal components from contamination. This extends service life in dusty environments or where moisture exposure is unavoidable.

Applications

Industrial Robotics

Robot joints and rotary bases require compact bearings that deliver precise positioning under varying loads. Our Small Slewing Bearing units provide the rigidity and accuracy needed for repeatability in automated manufacturing.

Precision Rotary Tables & Positioning Stages

CNC indexing tables, optical inspection systems, and radar antenna pedestals depend on smooth, precise rotation. Our bearings provide the stable, low-runout performance fundamental to measurement and positioning accuracy.

Medical Imaging Equipment

CT scanners and X-ray systems require exceptionally smooth and vibration-free rotation. The low-friction design ensures quiet operation and supports reliable imaging quality over millions of continuous operating cycles.

Solar Tracking Systems

Solar panel arrays utilize compact slewing drives to accurately track the sun's path. The bearing's ability to handle significant wind-induced moment loads is critical for system durability and tracking accuracy.

Security & Surveillance Systems

High-performance camera gimbals and pan-tilt units (PTUs) demand smooth movement and precise positioning. The compact size allows integration into space-constrained enclosures without sacrificing full 360° rotational range.

Aerospace & Stabilization Platforms

Navigation systems and electro-optical payloads incorporate these bearings in stabilization and pointing gimbals where minimizing weight and space are primary design objectives.

Installation Guide

1. Pre-Installation Inspection

Verify all mounting surfaces are clean, flat, and free of burrs or damage.

Check that mating components meet the required dimensional tolerances per the drawing.

Inspect the bearing for any shipping damage before proceeding.

2. Mounting Surface Preparation

Ensure mounting faces meet the specified flatness requirement (typically within 0.05 mm).

Deburr all bolt holes and remove any protective coatings from the contact surfaces.

3. Installation Procedure

Position the bearing carefully to avoid tilting or edge loading.

Insert the mounting bolts and tighten them finger-tight initially.

Following a star (cross) pattern, gradually tighten the bolts to the specified torque. This ensures even clamping force and load distribution.

4. Alignment Verification

After the initial tightening, manually rotate the bearing several full revolutions.

Check for any binding, uneven resistance, or grinding. Any such issue indicates misalignment that must be corrected.

5. Final Torque Application

Apply the final torque in multiple stages (e.g., 50%, 80%, 100%) using the same star pattern.

Re-check the rotation smoothness after the final tightening.

Exhibition

We attend many famous international exhibitions such as Shanghai International Maritime Exhibition,Mining World Russia, bauma China, CTT Russia, etc

Partners

Your trust, we cherish in heart all times and will reciprocate that trust with unwavering quality.

Packaging & shipping

Your goods are unique, and their journey should be flawless. Therefore, we offer professional and customized packaging services. Our experienced team will evaluate your goods' characteristics, transportation route, and environmental requirements to recommend the most secure solution, such as: wooden crate packaging, sturdy frame packaging, or composite reinforced packaging (wooden crate + iron frame).

Positive customer reviews

Our quality and service have received widespread praise from our customers.

Maintenance and Care

Lubrication Schedule

Initial lubrication is applied at the factory. For equipment in continuous operation, re-lubricate every 6 to 12 months, depending on load, speed, and environmental conditions. Use a lithium-complex or polyurea grease suitable for the operating temperature range.

Periodic Inspection

During routine maintenance, check for unusual noise, vibration, or a noticeable increase in rotational resistance. These symptoms may indicate internal contamination, wear, or other issues requiring attention.

Seal Condition Monitoring

Inspect the seals annually for cracks, tears, or hardening. Replace any damaged seals immediately to prevent the ingress of contaminants and the loss of lubricant.

Bolt Torque Verification

Re-torque all mounting bolts after the first 100 hours of operation, and then annually thereafter. Vibration and thermal cycles can cause bolts to loosen over time, affecting preload.

Operating Environment

Keep the area around the bearing clean and dry. In corrosive, dusty, or otherwise harsh environments, installing additional protective covers can significantly extend the bearing's service life.

FAQ

Q: What's the contrast between four-point contact and cross-roller designs?

A: Four-point contact ball heading offer great general-purpose execution at lower fetched. Cross-roller heading give higher unbending nature, stack capacity, and accuracy in a more compact bundle, but at higher cost.

Q: Can these orientation work at speeds higher than standard slewing bearings?

A: Yes, their littler distance across permits higher rotational speeds than expansive slewing orientation. Counsel our engineers with your particular speed necessities for legitimate selection.

Q: Do you give heading with coordinates engines or encoders?

A: We supply orientation with discretionary adapt teeth for engine coupling. For encoder integration, we can facilitate with your control framework provider to guarantee compatibility.

Q: What accuracy review ought to I select for my application?

A: P0 review suits common mechanical applications. P6 works for direct exactness needs. P5 and P4 grades are indicated for high-precision situating and estimation equipment.

Q: How do I decide the required stack capacity?

A: Calculate the greatest hub drive, outspread drive, and toppling minute your application creates. Our designing group can audit your stack information and suggest fitting models.

Q: Are stainless steel forms accessible for destructive environments?

A: Yes, we offer SUS440C stainless steel development for applications requiring erosion resistance, such as nourishment handling or marine situations.

Contact Us

For technical consultation, custom design services, or product inquiries, reach our engineering team at mia@hgb-bearing.com. We're ready to support your Small Slewing Bearing selection and application requirements.​​​​​​​