1204 (Self-Aligning Ball bearing)
The 1204 is a Self-Aligning Ball 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 12.7 kN and a basic static load rating of 3.4 kN.
Cross-Reference
| Manufacturer | Reference |
|---|---|
| SKF | 1204 |
| Timken | 1204 |
| FAG (Schaeffler) | 1204 |
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) | 12.7 kN |
| Basic static load rating (C0) | 3.4 kN |
Type & Application Notes
Self-Aligning Ball bearings are self-aligning under shaft deflection and misalignment, with two rows of balls. The 1204 is commonly found in light-load shafts prone to deflection, conveyors, and textile machinery. Dynamic rating 12.7 kN sets the load a bearing can carry for a one-million-revolution rating life (L10), while the static rating 3.4 kN governs the maximum load a stationary bearing can withstand without permanent deformation.
Interchange Notes
When substituting the 1204:
- Match the boundary dimensions (20 x 47 x 14 mm) exactly — this is what guarantees fit.
- Match the bearing type (Self-Aligning Ball); mixing roller and ball types changes stiffness, speed limits, and load capacity.
- Match or exceed the dynamic load rating (12.7 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 1204?
The Timken equivalent is 1204.
What FAG bearing crosses to SKF 1204?
The FAG (Schaeffler) equivalent is 1204.
What are the dimensions of the 1204 bearing?
20 x 47 x 14 mm (bore x OD x width).
What is the load rating of the 1204 bearing?
Dynamic 12.7 kN, static 3.4 kN.
What type of bearing is the 1204?
It is a Self-Aligning Ball bearing.