33 0411 01 slewing bearing
Cross-section Shape: Solid Rectangular Section
Tooth Type: Without Gear
Rolling Element: Steel Ball with Isolator Cage
Accuracy Class: Class I (Normal Clearance)
Material: 50Mn / 42CrMo (Other materials available upon request)
Cage: Nylon PA66 Isolator Block
Seal: NBR Double-sided Seal
Lubrication: Grease Lubrication with Filler Hole
Raceway Hardness: HRC 55 ~ 60
Operating Temperature: -20℃ ~ +40℃
Number of Models: 7 Standard Models
OD Coverage: 486 mm ~ 1166 mm
Weight Range: 29 kg ~ 78 kg
Uniform Height: H = 56 mm for all models
- Product Description
33 0411 01 Slewing Bearing – Solid Section Design for Medium-Duty Rotary Applications
The 33 0411 01 Slewing Bearing belongs to Rollix's 33 Series Light Solid Sections, engineered as a single-row four-point contact ball slewing ring with a solid rectangular cross-section. With an outer diameter of 486 mm, inner diameter of 342 mm, and uniform height of 56 mm, this bearing weighs 29 kg and features NBR double-sided seals, grease lubrication via filler holes, and raceway hardness of HRC 55–60. Manufactured from 50Mn or 42CrMo steel, it operates reliably within -20℃ to +80℃, delivering Class I accuracy for industrial robot bases, welding positioners, and compact rotary platforms requiring high rigidity without gear engagement.
Technical Specifications of 33 0411 01 Slewing Bearing
Attribute | Specification |
Brand | Rollix (Defontaine Group) |
Series Number | 33 Series (Light Series Solid Sections) |
Bearing Type | Single Row Four-Point Contact Ball Slewing Ring |
Cross-sectional Shape | Solid Rectangular Section |
Tooth Profile | Without Gear |
Rolling Elements | Steel Ball with Isolator Cage |
Precision Grade | Class I (Normal Clearance) |
Material | 50Mn / 42CrMo (Other materials available upon request) |
Cage | Nylon PA66 Isolator Block |
Seal | NBR Double-Sided Seal |
Lubrication | Grease Lubrication with Filler Hole |
Raceway Hardness | HRC 55 ~ 60 |
Operating Temperature | -20℃ ~ +80℃ |
Model Quantity | 7 Standard Models |
OD Coverage | 486 mm ~ 1166 mm |
Weight Range | 29 kg ~ 78 kg |
Uniform Height | H = 56 mm for all models |
Complete 33 Series Model Range
# | model | OD (mm) | ID (mm) | H (mm) | Weight (kg) | Outer ring bolt PCD La (mm) | Number of holes on the outer ring (no) | Inner ring bolt PCD Li (mm) | Number of inner holes (ni) |
1 | 33 0411 01 | 486 | 342 | 56 | 29 | 460 | 24 | 368 | 24 |
2 | 33 0541 01 | 616 | 472 | 56 | 38 | 590 | 32 | 498 | 32 |
3 | 33 0641 01 | 716 | 572 | 56 | 45 | 690 | 36 | 598 | 36 |
4 | 33 0741 01 | 816 | 672 | 56 | 52 | 790 | 40 | 698 | 40 |
5 | 33 0841 01 | 916 | 772 | 56 | 60 | 890 | 40 | 798 | 40 |
6 | 33 0941 01 | 1016 | 872 | 56 | 67 | 990 | 44 | 898 | 44 |
7 | 33 1091 01 | 1166 | 1022 | 56 | 78 | 1140 | 48 | 1048 | 48 |
All seven models maintain a uniform 56 mm height, simplifying mounting design and inventory management across your project portfolio.
33 Series vs. 23 Series: Choosing the Right Light Series Gearless Design
Comparison Factor | 33 Series (Solid Sections) | 23 Series (L-Shaped) |
Cross-Section Shape | Solid Rectangular | L-Shaped Thin-Wall Flange |
INA Equivalent | VSU (Solid) | VLU (L-Shaped) |
SKF Equivalent | RKS.060 | RKS.23 |
Rigidity | Higher | Moderate |
Weight | 29–78 kg | 23–67 kg |
Ideal Applications | Medium-Heavy Duty, High Rigidity Requirements | Lightweight, Space-Constrained |
OD/ID Range | 486–1166 mm | 518–1198 mm |
The solid rectangular cross-section of the 33 0411 01 slewing bearing provides superior rigidity compared to the L-shaped 23 Series. If your application demands structural stiffness to resist deformation under combined axial, radial, and tilting moment loads, the 33 Series delivers measurable advantages in positioning accuracy and service life.
Engineering Advantages of the 33 Series Design
Solid Section Rigidity: The rectangular design evenly distributes stress over the bearing section, decreasing elastic deformation under load. Slewing bearings for robot bases, telescope mounts, and turntable positioners require great repeatability and steady placement to ensure operational success.
The bearing can take axial, radial, and moment stresses in a single compact assembly since each steel ball touches the raceway at four locations. The lack of thrust and radial bearing systems saves installation space and simplifies maintenance.
NBR Double-Sided Seals: The sealing system blocks dust, moisture, and metal particles while preventing lubricant leakage. This protection prolongs lubricant and bearing life in dusty workplaces and outdoor situations.
Pre-filled with long-life grease and strategically placed filler holes, the bearing facilitates field relubrication without disassembly. In distant installations or continuous-duty cycles, this lowers downtime and maintenance expenses.
Application Recommendations by Model Range
Application Field | Recommended Models | Technical Rationale |
Industrial Robot Base / Turntable | 33 0411 ~ 33 0641 | Solid section rigidity exceeds 23 Series; ideal for robot chassis requiring high repeatability |
Small Crane / Truck-Mounted Crane | 33 0541 ~ 33 0841 | Medium-heavy duty rotary platform supporting load changes during lifting operations |
Solar Tracking System | 33 0541 ~ 33 0741 | Solid structure resists wind loads; low friction ensures precise sun-tracking angles |
Welding Positioner / Turntable | 33 0411 ~ 33 0641 | Moderate accuracy demands; smooth rotation prevents weld seam distortion |
Radar / Communication Antenna Base | 33 0411 ~ 33 0741 | High rigidity requirement maintains antenna alignment under wind shear |
Telescopic Handler | 33 0641 ~ 33 0841 | Medium construction excavator handling combined radial and axial boom forces |
Revolving Stage Equipment | 33 0411 ~ 33 0641 | Smooth rotation; low noise for audience-facing applications |
Telescope Mount Base | 33 0541 ~ 33 0841 | High rigidity and stability maintain optical axis alignment during observation |
Whether you need a slewing ring for wind turbine yaw, slewing ring for rock breaker, slewing bearing for filling machine turntable, slewing ring for small crane slewing, slewing bearing for revolving stage, or slewing ring for jib crane, selecting the correct model size within the 33 Series ensures your design meets load ratings and spatial constraints without overengineering.
Delivery and Customization
The In Stock product ships within 7-15 days from stock. Custom setups take 4-6 weeks, depending on intricacy. For non-standard applications requiring modified materials (such as stainless steel or case-hardened alloy steel), altered bolt patterns, or special coatings, our engineering team collaborates with you to develop tailored solutions that meet your exact specifications.
Certification
FAQ
Q: Can the product handle moment loads?
A: Yes. The four-point contact ball design and solid rectangular section enable simultaneous support of axial, radial, and tilting moment loads within its rated capacity.
Q: Is this bearing suitable for outdoor use?
A: The NBR double-sided seals and grease lubrication system provide reliable protection within -20℃ to +80℃. For extreme environments or corrosive conditions, consult our engineering team for material upgrades.
Q: How does the 33 Series compare to roller slewing bearings?
A: Roller bearings offer higher load capacity but are heavier and more expensive. The 33 Series ball bearing provides a balanced solution for medium-duty applications where weight, cost, and moderate load requirements converge.
Q: What mounting surface flatness is required?
A: Mounting surfaces should comply with ISO tolerance standards to prevent pre-load distortion. Consult our technical documentation for specific flatness and parallelism requirements based on your model selection.
Contact Us
Ready to specify the 33 0411 01 slewing bearing for your next project? Email us at mia@hgb-bearing.com to request technical drawings, confirm load ratings, or discuss custom configurations tailored to your application requirements.
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