Our 11, 12, and 13 series cylindrical roller bearings are the benchmark for reliability in medium-to-heavy industrial applications. Designed to provide maximum radial rigidity and high-speed stability, these bearings are essential for high-performance gearboxes, motors, and mechanical drive systems.
Core Technical Strengths:
Optimized Roller Geometry: Advanced crowning on rollers and raceways significantly reduces edge stress and extends operational life.
High Load Rating: Expertly engineered to support high radial forces while maintaining smooth, low-friction rotation.
Structure Specifics:
NU/N Type: Ideal for non-locating (floating) positions to accommodate thermal shaft expansion.
NJ Type: Features two ribs on the outer ring and one on the inner, allowing single-direction axial location.
NUP Type: Locating bearing with two ribs on the outer and one rib plus a loose rib on the inner for bi-directional axial support.
Material Integrity: Forged from high-grade chrome steel with precision heat treatment for extreme wear resistance.
Series Overview & Models:
11 Series: N311, NJ2311, NJ411
12 Series: NU1012, N212, NJ312, NUP2312, NU412
13 Series: NU1013, NU213, NUP313
| Bearings No. | d (mm) | D (mm) | B (mm) | Cr (kN) | C0r (kN) | Weight (kg) |
|---|---|---|---|---|---|---|
| N 311 ECM | 55 | 120 | 29 | 156 | 143 | 1.57 |
| NJ 311 ECM | 55 | 120 | 29 | 156 | 143 | 1.58 |
| NU 311 ECM | 55 | 120 | 29 | 156 | 143 | 1.57 |
| NUP 311 ECM | 55 | 120 | 29 | 156 | 143 | 1.55 |
| NJ 2311 ECP | 55 | 120 | 43 | 232 | 232 | 2.3 |
| NU 2311 ECP | 55 | 120 | 43 | 232 | 232 | 2.25 |
| NUP 2311 ECP | 55 | 120 | 43 | 232 | 232 | 2.35 |
| NJ 411 | 55 | 140 | 33 | 142 | 140 | 2.55 |
| NU 411 | 55 | 140 | 33 | 142 | 140 | 2.5 |
| NU 1012 ML | 60 | 95 | 18 | 37.4 | 44 | 0.48 |
| N 212 ECM | 60 | 110 | 22 | 108 | 102 | 0.81 |
| NJ 212 ECM | 60 | 110 | 22 | 108 | 102 | 0.83 |
| NU 212 ECM | 60 | 110 | 22 | 108 | 102 | 0.87 |
| NUP 212 ECM | 60 | 110 | 22 | 108 | 102 | 0.86 |
| NJ 2212 ECM | 60 | 110 | 28 | 146 | 153 | 1.15 |
| NU 2212 ECM | 60 | 110 | 28 | 146 | 153 | 1.1 |
| NUP 2212 ECM | 60 | 110 | 28 | 146 | 153 | 1.15 |
| N 312 ECM | 60 | 130 | 31 | 173 | 160 | 1.8 |
| N 312 ECP | 60 | 130 | 31 | 173 | 160 | 1.8 |
| NJ 312 ECM | 60 | 130 | 31 | 173 | 160 | 2 |
| NU 312 ECM | 60 | 130 | 31 | 173 | 160 | 1.95 |
| NUP 312 ECP | 60 | 130 | 31 | 173 | 160 | 1.95 |
| NJ 2312 ECP | 60 | 130 | 46 | 260 | 265 | 2.8 |
| NU 2312 ECM | 60 | 130 | 46 | 260 | 265 | 3.15 |
| NUP 2312 ECP | 60 | 130 | 46 | 260 | 265 | 2.85 |
| NJ 412 | 60 | 150 | 35 | 168 | 173 | 3.1 |
| NU 412 | 60 | 150 | 35 | 168 | 173 | 3 |
| NU 1013 ECP | 65 | 100 | 18 | 62.7 | 81.5 | 0.45 |
| NJ 213 ECM | 65 | 120 | 23 | 122 | 118 | 1.07 |
| NU 213 ECM | 65 | 120 | 23 | 122 | 118 | 1.16 |
| NUP 213 ECP | 65 | 120 | 23 | 122 | 118 | 1.1 |
| NJ 2213 ECP | 65 | 120 | 31 | 170 | 180 | 1.45 |
| NU 2213 ECP | 65 | 120 | 31 | 170 | 180 | 1.4 |
| N 313 ECM | 65 | 140 | 33 | 212 | 196 | 2.25 |
| NJ 313 ECM | 65 | 140 | 33 | 212 | 196 | 2.5 |
| NU 313 ECM | 65 | 140 | 33 | 212 | 196 | 2.43 |
| NUP 313 ECP | 65 | 140 | 33 | 212 | 196 | 2.35 |