NJ 2213 ECP Code explanation:
NJ: NJ type, outer ring with two ribs, inner ring with one rib; can locate the shaft in one axial direction
E: Optimized roller geometry, higher load capacity
CP: Polyamide (nylon) cage, roller-guided, low friction, high-speed adaptation
NJ 2213 ECP Characteristics
1. High radial load capacity: Optimized roller arrangement, suitable for heavy pure radial load; cannot carry bi-directional axial load, only bear limited axial thrust in one direction
2. Separable construction: Inner ring assembly and outer ring can be mounted/dismounted separately, easy installation & inspection, interchangeable components
3. Low friction, good high-speed performance: Polyamide cage reduces heat generation; Reference speed:6300 rpm, Limiting speed:6700 rpm
4. Long service life: fatigue performance is improved
5. Thermal displacement compensation: Allows shaft thermal elongation in the opposite axial direction of the rib, avoiding thermal clamping
6. Open type, no seals; standard CN radial internal clearance (C3 optional)
NJ2213 ECP Applications
Mainly used for equipment with heavy radial load, medium-high speed, and requirement for one-way axial positioning:
1. Gearboxes / Reducers: Industrial transmission gear units (very common)
2. Electric motors: Large & medium-size industrial motors
3. Pumps & Compressors: Centrifugal pumps, screw compressors
4. Machine tools: Main spindles, transmission shafts
5. Conveyors, Fans, Textile machinery
6. Construction machinery, mining equipment auxiliary shafts