RNA 4824 bearing
130 × 150 mm · dynamic rating 99 kN · static rating 255 kN. Dimensions, load ratings, designation meaning, life estimates and equivalent parts.
RNA 4824 specification
| Designation | RNA 4824 |
| Type | Needle roller bearing |
| Series | — |
| Bore diameter d | 130 mm |
| Outside diameter D | 150 mm |
| Basic dynamic load rating C | 99 kN (99,000 N) |
| Basic static load rating C0 | 255 kN (255,000 N) |
| Ratio C0/C | 2.58 |
| Speed guide, grease lubrication | 3,600 rpm |
| Life exponent p | 10/3 (roller bearing) |
Values come from the Rotec AI bearing catalogue and are indicative. Confirm against the manufacturer's current catalogue before ordering. Not every dimension (such as width) is listed here.
What the designation RNA 4824 means
| Code | Meaning |
|---|---|
| NK | Needle roller bearing, machined ring with flange, no inner ring — the hardened/ground shaft itself serves as the inner raceway |
Basic rating life of the RNA 4824
Basic rating life is L10 = (C / P)p million revolutions, where P is the equivalent dynamic load and p = 10/3 (roller bearing). For a RNA 4824 with C = 99 kN, the table shows what that gives at different load levels. It is the ISO 281 basic life only: it does not include lubrication, contamination, misalignment or reliability modifiers.
| C / P | P as share of C | L10 (million rev) | L10 at 1,500 rpm | L10 at 3,000 rpm |
|---|---|---|---|---|
| 3 | 33.3% | 39 | 430 | 220 |
| 5 | 20.0% | 214 | 2,400 | 1,200 |
| 8 | 12.5% | 1,024 | 11,400 | 5,700 |
| 12 | 8.3% | 3,956 | 44,000 | 22,000 |
For example, a C / P of 5 means the equivalent load is 19.8 kN on this bearing. Use the Load Calculator to work out P for your actual radial and axial loads.
Equivalents of the RNA 4824
Brand-by-brand equivalents for this exact designation are not yet in the Rotec AI cross-reference tables. The Cross-Reference tool accepts SKF, FAG, NSK, NTN, Timken, Koyo and NRB designations, and shows what is catalogued.
Where the RNA 4824 is used
Needle roller bearings are chosen for: High radial load in limited radial space. Typical equipment: Transmissions, actuators, mobile equipment, compact machinery. Requires hardened raceways or inner ring; alignment sensitivity.
Other sizes in the same series
The RNA 4824 is size 22 of 24 in the Rotec AI catalogue for the “” series. The next size down, the RNA 4822, has a bore of 120 mm and a dynamic rating of 93.5 kN. The next size up, the RNA 4828, has a bore of 155 mm and a rating of 121 kN (+22%).
Common problems on bearings like the RNA 4824
Most field failures trace back to lubrication, contamination, fits and alignment rather than the bearing itself. These guides explain how to recognise and prevent them:
Questions about the RNA 4824
What are the dimensions of a RNA 4824 bearing?
The RNA 4824 has a bore of 130 mm and an outside diameter of 150 mm. It is a needle roller bearing.
What is the load rating of a RNA 4824 bearing?
In the Rotec AI catalogue the RNA 4824 has a basic dynamic load rating C of 99 kN and a basic static load rating C0 of 255 kN. Always confirm against the manufacturer's current catalogue.
What is the equivalent of a RNA 4824 bearing?
Brand equivalents for the RNA 4824 are not yet in the Rotec AI tables. Use the Cross-Reference tool to check other designations.