The SKF 6205-2Z/C3 is a single row deep groove ball bearing with a 25 mm bore, 52 mm outside diameter and 15 mm width, fitted with a non-contact metal shield on both sides (2Z) and C3 radial internal clearance. It belongs to the SKF Explorer performance class and, per SKF, carries a basic dynamic load rating of 14.8 kN and a basic static load rating of 7.8 kN.
The designation can be read directly: 6 = single row deep groove ball bearing, 2 = ISO dimension series 02 (light), the most widely used series, balancing size and load capacity; 05 = bore code for 25 mm (05 x 5); 2Z = shields on both sides; C3 = radial internal clearance greater than normal.
Shields leave a narrow gap to the inner ring, so friction stays low and SKF lists a limiting speed of 14,000 r/min for this version, compared with 8,500 r/min for the sealed 6205-2RSH/C3. That makes the 2Z design the usual choice for electric motors, fans and other clean, fast-running positions.
Technical data
| SKF designation | 6205-2Z/C3 |
|---|---|
| Bearing type | Single row deep groove ball bearing |
| Dimension series | 62 – ISO dimension series 02 (light) |
| Bore diameter (d) | 25 mm |
| Outside diameter (D) | 52 mm |
| Width (B) | 15 mm |
| Basic dynamic load rating (C) | 14.8 kN |
| Basic static load rating (C0) | 7.8 kN |
| Reference speed | 28,000 r/min |
| Limiting speed | 14,000 r/min |
| SKF performance class | SKF Explorer |
| Sealing | Shield on both sides (non-contact) |
| Radial internal clearance | C3 (greater than normal) |
| Cage | Sheet metal (pressed steel) |
| Bore type | Cylindrical |
| Lubricant | Grease, no relubrication feature |
| Material | Bearing steel |
| Net weight | 0.131 kg |
| Condition | New, original SKF |
Typical applications
- General machinery shafts and housings
- Centrifugal pumps and pump motors
- Electric motors and generators (drive-end and non-drive-end positions)
- Machine-tool and woodworking spindles running at moderate speed
- Like-for-like replacement of a worn SKF 6205-2Z/C3
Compatibility and replacement
Every 6205 bearing made to ISO 15 has the same 25 x 52 x 15 mm boundary dimensions, so this bearing fits wherever a 6205 with shields and C3 clearance from another maker was used. Suffixes differ between brands: shields are often marked ZZ or 2Z, contact seals 2RS, 2RS1, DDU or LLU, and the clearance C3 may appear as “C3” or “/C3”. Always match the sealing arrangement and the clearance class shown on the old bearing; if your machine needs the other closure, the 6205-2RSH/C3 is the same size.
Frequently asked questions
What is the difference between 6205-2Z/C3 and 6205-2RSH/C3?
Only the closures. The 6205-2Z has non-contact steel shields; the 2RSH version has contact rubber seals. Per SKF, the limiting speed is 14,000 r/min for 2Z and 8,500 r/min for 2RSH; the load ratings are the same. Choose shields for speed and low friction, seals for dirt and moisture.
Which shaft and housing does it fit?
A 25 mm shaft seat and a 52 mm housing bore, with 15 mm of axial space. The exact fit tolerances depend on the load and on which ring rotates, so follow the machine drawing or the old bearing seat.
What do the load ratings mean in practice?
The basic dynamic load rating C (14.8 kN) is used to calculate rating life: under ISO 281, a ball bearing loaded at one tenth of C has a basic rating life of 1,000 million revolutions. The static rating C0 (7.8 kN) is the reference for heavy loads at very low speed or standstill.
Related parts
- SKF 6205-2RSH/C3 (sealed version)
- SKF 6204-2Z/C3 (20 mm bore)
- SKF 6206-2Z/C3 (30 mm bore)
- All SKF 6200 Series Bearings
Part of the SKF 6200 series stocked by RendatSP for electric motors, gearboxes, pumps, fans, conveyors and general industrial machinery, with fast shipping to Iraq, Saudi Arabia, UAE, Egypt, Yemen, Libya and across the Middle East and Africa.
Every part RendatSP supplies is new and original, carries a 1-year warranty and ships worldwide by air in 5 to 7 days once ready (shipping, payment and warranty). Send us the part number and quantity on WhatsApp or through the inquiry form and we will quote the same working day. Agents in Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.
