The SKF 6209-2Z/C3 is a single row deep groove ball bearing with a 45 mm bore, 85 mm outside diameter and 19 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 35.1 kN and a basic static load rating of 21.6 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; 09 = bore code for 45 mm (09 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 8,500 r/min for this version, compared with 5,000 r/min for the sealed 6209-2RS1/C3. That makes the 2Z design the usual choice for electric motors, fans and other clean, fast-running positions.
Technical data
| SKF designation | 6209-2Z/C3 |
|---|---|
| Bearing type | Single row deep groove ball bearing |
| Dimension series | 62 – ISO dimension series 02 (light) |
| Bore diameter (d) | 45 mm |
| Outside diameter (D) | 85 mm |
| Width (B) | 19 مم |
| Basic dynamic load rating (C) | 35.1 kN |
| Basic static load rating (C0) | 21.6 kN |
| Reference speed | 17,000 r/min |
| Limiting speed | 8,500 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 | 0.42 kg |
| Condition | New, original SKF |
Typical applications
- Industrial electric motors
- Electric motors and generators (drive-end and non-drive-end positions)
- Centrifugal pumps and pump motors
- Fans, blowers and ventilation units
- Like-for-like replacement of a worn SKF 6209-2Z/C3
Compatibility and replacement
Every 6209 bearing made to ISO 15 has the same 45 x 85 x 19 mm boundary dimensions, so this bearing fits wherever a 6209 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 6209-2RS1/C3 is the same size.
Frequently asked questions
What is the difference between 6209-2Z/C3 and 6209-2RS1/C3?
Only the closures. The 6209-2Z has non-contact steel shields; the 2RS1 version has contact rubber seals. Per SKF, the limiting speed is 8,500 r/min for 2Z and 5,000 r/min for 2RS1; the load ratings are the same. Choose shields for speed and low friction, seals for dirt and moisture.
Is it the same as a 6209ZZ or 6209-2RS from another brand?
Dimensionally yes: all 6209 bearings share 45 x 85 x 19 mm under ISO 15. A ZZ marking corresponds to this shielded design and 2RS to the sealed design; load ratings and speeds differ between makers, and the figures on this page are the SKF values.
What do the load ratings mean in practice?
The basic dynamic load rating C (35.1 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 (21.6 kN) is the reference for heavy loads at very low speed or standstill.
Related parts
- SKF 6209-2RS1/C3 (sealed version)
- SKF 6208-2Z/C3 (40 mm bore)
- SKF 6210-2Z/C3 (50 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.
