NJ306 ECM Cylindrical Roller Bearing 30x72x19mm with Brass Machined Cage Reinforced Design
The NJ306 ECM cylindrical roller bearing is a high-performance single-row roller bearing designed for applications requiring high radial load capacity and high-speed operation. The ECM brass machined cage offers superior wear resistance, excellent heat dissipation, and extended service life compared to standard pressed steel cages.
- Reinforced Internal Design: The E-suffix indicates an optimized roller and raceway geometry that increases dynamic load rating by approximately 15-20% over standard NJ306 bearings.
- Brass Machined Cage (M): Precision-machined from high-strength brass, providing exceptional dimensional stability and thermal resistance up to 200°C. Ideal for high-speed and high-temperature applications.
- Window-Type Cage: The C designation indicates a window-type cage design that guides on the rolling elements, reducing friction and improving lubrication distribution.
- Single Flange Inner Ring: Allows axial displacement of the shaft relative to the housing in one direction, accommodating thermal expansion while carrying radial loads.
- Double Flange Outer Ring: Provides axial guidance for the roller set, ensuring stable operation under combined loading conditions.
- Separable Design: Inner ring with roller and cage assembly can be mounted separately from the outer ring, simplifying installation and maintenance.
| Bore Diameter (d) | 30 mm |
| Outer Diameter (D) | 72 mm |
| Width (B) | 19 mm |
| Dynamic Load Rating (Cr) | 49.5 kN |
| Static Load Rating (C0r) | 48 kN |
| Limiting Speed (Grease) | 12,000 rpm |
| Limiting Speed (Oil) | 14,000 rpm |
| Weight | 0.38 kg |
- Electric motors and generators
- Industrial gearboxes and transmissions
- Pump and compressor shafts
- Machine tool spindles
- Material handling equipment
- Automotive transmission systems
Every GQZ Bearing NJ306 ECM cylindrical roller bearing is manufactured from premium GCr15 bearing steel and undergoes 100% quality inspection including dimensional checks, radial internal clearance measurement, vibration testing, and rotating accuracy verification. The ECM reinforced brass cage design ensures reliable performance in demanding high-speed industrial applications.
- Individual anti-rust VCI paper wrapping
- GQZ Bearing branded box with protective foam
- Export-grade fumigated plywood case
- Sample orders: 3-5 working days
- Bulk production: 15-20 days
Contact us for competitive pricing, technical datasheets, or sample requests. OEM and private labeling available.
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