SKF Combined Needle Roller Bearings are a type of bearing that combines radial needle roller bearings and thrust bearings. They can withstand both radial and axial loads, and are particularly suitable for applications that require both loads, such as limited space or large axial loads. Structural Features Combined Needle Roller Bearings consist of the following parts: Radial Needle Roller Bearings: Mainly bear radial loads. Thrust Bearing Assembly: Includes outer ring, inner ring, preload device, etc., used to bear axial loads. The preload device can prevent the needle roller from sliding under light loads, thereby improving the performance of the bearing and extending its service life. Application Scenarios This bearing is particularly suitable for the following application scenarios: Limited Space: When other types of locating bearings take up too much space, Combined Needle Roller Bearings can be positioned in a smaller radial space. Large Axial Load: When the axial load is large and a simple thrust washer cannot bear it. Poor lubrication conditions: In the case of poor lubrication conditions, Combined Needle Roller Bearings can provide better lubrication effect.
SKF Combined Needle Roller Bearings are innovative, space-saving solutions that integrate needle roller bearings with additional bearing types or structural components to optimize load handling, alignment, and compactness in mechanical systems. These hybrid bearings are engineered to support high radial loads while accommodating axial forces, misalignment, or complex motion requirements. Ideal for applications where space constraints coexist with demanding operational conditions, SKF Combined Needle Roller Bearings are widely used in automotive transmissions, industrial robotics, aerospace actuators, and precision machinery. Their modular design combines the advantages of needle rollers (high load density) with complementary bearing technologies, delivering unparalleled performance in compact installations.
Key Features & Benefits of SKF Combined Needle Roller Bearings
- Hybrid Load Capacity
Radial Load Dominance: Needle rollers handle radial loads up to 1,200 N/mm² due to their large surface contact area.
Axial Load Support: Integrated thrust bearings or flanges manage axial forces up to 30% of radial capacity.
Combined Load Scenarios: Ideal for applications requiring simultaneous radial, axial, and moment loads (e.g., robotic joints).
- Compact & Space-Efficient Design
Low Cross-Section Height: Radial space savings of 20–40% compared to conventional roller bearings.
Integrated Components: Combine needle rollers with ball bearings, thrust washers, or alignment sleeves in a single unit.
- Precision Engineering
Micron-Level Tolerance: Ground raceways and rollers ensure smooth operation (±0.005 mm runout).
Optimized Cage Designs: Steel or polymer cages maintain roller spacing, reducing friction and wear.
- Durability in Harsh Environments
High-Performance Materials:
Case-Hardened Chromium Steel (SAE 52100): Surface hardness of 58–62 HRC for wear resistance.
Stainless Steel (AISI 440C): Corrosion-resistant variants for marine or chemical applications.
Advanced Sealing: Triple-lip seals (SKF LLU/LLB) or labyrinth seals for IP67 protection against contaminants.
- Versatile Configurations
Needle Roller/Thrust Ball Combinations: For rotary and axial motion in gearboxes.
Alignment Sleeve Integration: Compensates for shaft misalignment (±1°–2°).
Flanged Units: Axial positioning in housing-less designs.
SKF Combined Needle Roller Bearings represent the pinnacle of compact, high-performance bearing technology. By seamlessly integrating needle rollers with complementary components, these bearings address complex load and space challenges in modern machinery. From automotive transmissions to surgical robots, their precision engineering, durability, and adaptability ensure reliable operation under extreme conditions. Backed by SKF’s global expertise and commitment to innovation, these bearings reduce downtime, lower energy costs, and extend equipment lifespan—making them a strategic investment for industries demanding peak performance in constrained spaces.
