NU 204 ECP (Cylindrical Roller bearing)
The NU 204 ECP is a Cylindrical Roller bearing with boundary dimensions of 20 x 47 x 14 mm (bore x outside diameter x width). It has a basic dynamic load rating of 25.5 kN and a basic static load rating of 22 kN.
Cross-Reference
| Manufacturer | Reference |
|---|---|
| SKF | NU 204 ECP |
| Timken | NU204 |
| FAG (Schaeffler) | NU204-E-XL |
Cross-references are matched on the ISO 15 boundary dimensions
(20 x 47 x 14 mm) and bearing type, which is what makes parts interchangeable. The
suffixes (e.g. -2RS, -2Z, -E1) encode seals, shields, and internal design
variants, not the envelope size.
Boundary Dimensions
| Dimension | Value |
|---|---|
| Bore (d) | 20 mm |
| Outside diameter (D) | 47 mm |
| Width (B/T) | 14 mm |
Load Ratings
| Rating | Value |
|---|---|
| Basic dynamic load rating (C) | 25.5 kN |
| Basic static load rating (C0) | 22 kN |
Type & Application Notes
Cylindrical Roller bearings are high radial capacity with line contact and no axial location (NU) or one-direction location (NJ). The NU 204 ECP is commonly found in electric motors, gearboxes, and rolling mills with heavy radial loads. Dynamic rating 25.5 kN sets the load a bearing can carry for a one-million-revolution rating life (L10), while the static rating 22 kN governs the maximum load a stationary bearing can withstand without permanent deformation.
Interchange Notes
When substituting the NU 204 ECP:
- Match the boundary dimensions (20 x 47 x 14 mm) exactly — this is what guarantees fit.
- Match the bearing type (Cylindrical Roller); mixing roller and ball types changes stiffness, speed limits, and load capacity.
- Match or exceed the dynamic load rating (25.5 kN) for the intended life.
- Respect the seal/shield suffix the application requires (open, Z, 2Z, RS, or 2RS).
Frequently Asked Questions
What Timken bearing crosses to SKF NU 204 ECP?
The Timken equivalent is NU204.
What FAG bearing crosses to SKF NU 204 ECP?
The FAG (Schaeffler) equivalent is NU204-E-XL.
What are the dimensions of the NU 204 ECP bearing?
20 x 47 x 14 mm (bore x OD x width).
What is the load rating of the NU 204 ECP bearing?
Dynamic 25.5 kN, static 22 kN.
What type of bearing is the NU 204 ECP?
It is a Cylindrical Roller bearing.