Le NN3020 Double Row Cylindrical Roller Bearing is a high-capacity precision bearing designed for applications requiring extremely high radial load capacity and excellent rigidity. Its double-row structure significantly increases load performance while maintaining stable operation under heavy-duty conditions.
Unlike single-row bearings, the NN type features a non-locating design that allows axial displacement, making it ideal for systems where thermal expansion must be accommodated. This ensures smooth operation and reduced internal stress during continuous industrial use.
Manufactured from high-quality chrome steel and available in stainless steel or special material options, the NN3020 bearing delivers long service life, low friction, and high reliability in demanding environments such as steel production, mining, and heavy machinery.
Caractéristiques clés
- Double row cylindrical roller design for ultra-high radial load capacity
- High rigidity and stable performance under heavy loads
- Non-locating structure allows axial displacement
- Faible friction et fonctionnement fluide
- Suitable for high-speed and heavy-duty applications
- Excellent durability and long service life
- Optional stainless steel and custom material versions
Spécifications techniques
| Paramètre | Valeur |
|---|---|
| Modèle de roulement | NN3020 |
| Diamètre intérieur (d) | 100 mm |
| Diamètre extérieur (D) | 150 mm |
| Largeur (B) | 37 mm |
| Type de roulement | Double Row Cylindrical Roller Bearing (NN Type) |
| Matériau | Acier au chrome / Acier inoxydable |
| Matériau de la cage | Acier / Laiton |
| Lubrification | Graisse / Huile |
| Classe de précision | P0 / P6 / P5 |
| Température de fonctionnement | -20°C à 120°C |
Applications
The NN3020 double row cylindrical roller bearing is widely used in:
- Steel rolling mills
- Heavy-duty industrial gearboxes
- Mining machinery
- Équipements de construction
- Large electric motors
- Paper and textile machinery
- Industrial transmission systems
Pourquoi nous choisir
- Forte capacité dans la fabrication de roulements lourds
- OEM and custom engineering support available
- Advanced production and heat treatment technology
- Système d'inspection et de test de qualité strict
- Fast global delivery and stable supply
FAQ
Q1: What is the advantage of double row cylindrical roller bearings?
A: They provide significantly higher radial load capacity and improved rigidity compared to single-row designs.
Q2: What is the difference between NN and NNU types?
A: NN type allows axial displacement of the shaft, while NNU type allows axial displacement of the housing.
Q3: Can NN3020 be used in heavy industrial applications?
A: Yes, it is specifically designed for heavy-load environments such as steel mills and mining equipment.
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