NJ Series (Single Row with Inner Ring Rib)
Structure: Single Row / Inner Ring with One Rib
Bore Type: Cylindrical
Precision: P0, P6, P5, P4
Cage: Steel / Brass / PA66
Clearance: C0, C2, C3, C4
Bore Range: 15mm – 200mm
Application: Machine tools, traction motors, rolling mills, gearboxes
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The NJ Series cylindrical roller bearings incorporate a single rib on the inner ring, enabling them to accommodate axial loads in one direction while maintaining excellent radial load capacity. The separable design simplifies mounting and dismounting. Commonly used in traction motors, rolling mill equipment, and heavy-duty gearboxes where directional thrust loads accompany high radial forces.
Technical Specifications
| Bearing No. | Bore (d) mm | Outer Dia. (D) mm | Width (B) mm | Dyn. Load Cr (kN) | Stat. Load Cor (kN) | Ref. Speed (rpm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| NJ202 | 15 | 35 | 11 | 12.5 | 10.4 | 18000 | 0.054 |
| NJ203 | 17 | 40 | 12 | 16.5 | 14.0 | 16000 | 0.077 |
| NJ204 | 20 | 47 | 14 | 25.8 | 22.2 | 14000 | 0.12 |
| NJ205 | 25 | 52 | 15 | 27.5 | 26.8 | 12000 | 0.16 |
| NJ206 | 30 | 62 | 16 | 36.0 | 35.5 | 10000 | 0.26 |
| NJ207 | 35 | 72 | 17 | 46.5 | 48.0 | 8500 | 0.4 |
| NJ208 | 40 | 80 | 18 | 51.5 | 53.0 | 7500 | 0.53 |
| NJ209 | 45 | 85 | 19 | 58.5 | 63.8 | 7000 | 0.62 |
| NJ210 | 50 | 90 | 20 | 61.2 | 69.2 | 6300 | 0.71 |
| NJ211 | 55 | 100 | 21 | 80.2 | 95.5 | 5600 | 0.96 |
| NJ212 | 60 | 110 | 22 | 102.0 | 124.0 | 5300 | 1.25 |
| NJ213 | 65 | 120 | 23 | 118.0 | 145.0 | 4800 | 1.6 |
| NJ214 | 70 | 125 | 24 | 125.0 | 160.0 | 4500 | 1.75 |
| NJ215 | 75 | 130 | 25 | 132.0 | 175.0 | 4300 | 1.9 |
| NJ216 | 80 | 140 | 26 | 160.0 | 215.0 | 4000 | 2.3 |
| NJ217 | 85 | 150 | 28 | 192.0 | 255.0 | 3800 | 2.9 |
| NJ218 | 90 | 160 | 30 | 215.0 | 290.0 | 3600 | 3.5 |
| NJ219 | 95 | 170 | 32 | 245.0 | 335.0 | 3400 | 4.3 |
| NJ220 | 100 | 180 | 34 | 275.0 | 375.0 | 3200 | 5.15 |
