A 6205 is a boundary dimension, not a product. Any of the major makers will supply 25 × 52 × 15 mm with a dynamic rating around 14 kN — and each will fill it with a different cage, a different grease and a different default clearance. The bearing is interchangeable; the defaults are not.
| Property | SKF 6205 | NSK 6205 | FAG 6205 | NTN 6205 |
|---|---|---|---|---|
| Bore × OD × width | 25 × 52 × 15 | 25 × 52 × 15 | 25 × 52 × 15 | 25 × 52 × 15 |
| Dynamic rating | ~14 kN | ~14 kN | ~14 kN | ~14 kN |
| Static rating | ~7.8 kN | ~7.8 kN | ~7.8 kN | ~7.8 kN |
| Limiting speed (grease) | ~14,000 rpm | ~13,000 rpm | ~13,000 rpm | ~13,000 rpm |
| Seal code | 2RS1 / 2RSH | DDU | 2RSR | LLU |
| Default clearance | CN | CN | CN | CN |
| Standard cage | Stamped steel | Stamped steel or polyamide | Stamped steel | Pressed steel |
The three differences that cause real problems are all invisible on the box. First, the cage: a polyamide cage in a bearing that runs at 130 °C will soften, and it may arrive as the standard fit from one maker and not another. Second, the grease: fill quantity and thickener differ, so the usable temperature range differs by tens of degrees. Third, the clearance you receive when you do not ask: all four default to CN, but substitute brands are often ordered by a distributor who assumes C3 because that is what the original application used.
Yes on dimensions, load rating and general duty. Check the seal code, the cage material and the clearance suffix before substituting.
For general duty there is no functional difference at the same suffix. Availability and authenticity matter more than the logo.
Cage material, grease quality, precision grade, and where it was made. A polyamide cage and a mineral grease cost less than a brass cage and a synthetic grease.
No. Matched pairs are ground and measured as a set; mixing brands loses the preload match.
Send the model list and quantities — we reply with brand options, price and lead time within 30 minutes on working days.