NA 4900 (Needle Roller bearing)
The NA 4900 is a Needle Roller bearing with boundary dimensions of 10 x 22 x 13 mm (bore x outside diameter x width). It has a basic dynamic load rating of 12.1 kN and a basic static load rating of 16 kN.
Cross-Reference
| Manufacturer | Reference |
|---|---|
| SKF | NA 4900 |
| Timken | NA4900 |
| FAG (Schaeffler) | NA4900 |
Cross-references are matched on the ISO 15 boundary dimensions
(10 x 22 x 13 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) | 10 mm |
| Outside diameter (D) | 22 mm |
| Width (B/T) | 13 mm |
Load Ratings
| Rating | Value |
|---|---|
| Basic dynamic load rating (C) | 12.1 kN |
| Basic static load rating (C0) | 16 kN |
Type & Application Notes
Needle Roller bearings are compact, high radial capacity within a thin radial envelope. The NA 4900 is commonly found in connecting rods, transmissions, and space-constrained pivot points. Dynamic rating 12.1 kN sets the load a bearing can carry for a one-million-revolution rating life (L10), while the static rating 16 kN governs the maximum load a stationary bearing can withstand without permanent deformation.
Interchange Notes
When substituting the NA 4900:
- Match the boundary dimensions (10 x 22 x 13 mm) exactly — this is what guarantees fit.
- Match the bearing type (Needle Roller); mixing roller and ball types changes stiffness, speed limits, and load capacity.
- Match or exceed the dynamic load rating (12.1 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 NA 4900?
The Timken equivalent is NA4900.
What FAG bearing crosses to SKF NA 4900?
The FAG (Schaeffler) equivalent is NA4900.
What are the dimensions of the NA 4900 bearing?
10 x 22 x 13 mm (bore x OD x width).
What is the load rating of the NA 4900 bearing?
Dynamic 12.1 kN, static 16 kN.
What type of bearing is the NA 4900?
It is a Needle Roller bearing.