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Single row deep groove ball bearings are particularly versatile, have low friction and are optimized for low noise and low vibration, which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than many other bearing types. Also available on request with special sized bore and/or outside diameters, suitable for reworked shafts and housings.
Bore, outside diameter and width follow the ISO 15:2017 metric series, so the 6205 is a direct interchange across brands. Values below apply to the standard steel-cage, chrome-steel (GCr15) execution.
| Parameter | Metric | Imperial |
|---|---|---|
| Bore diameter (d) | 25 mm | 0.9843 in |
| Outside diameter (D) | 52 mm | 2.0472 in |
| Width (B) | 15 mm | 0.5906 in |
| Basic dynamic load rating (C) | 1,100 kgf / 10.8 kN | — |
| Basic static load rating (C0) | 730 kgf / 7.2 kN | — |
| Limiting speed — open | 15,000 rpm | — |
| Limiting speed — ZZ / 2RS | 13,000 rpm | — |
| Weight | 128 g | — |
The raceway groove is machined slightly larger than the ball radius, giving point contact between balls and ring. That geometry is what lets a single row of balls carry radial load and axial load in both directions at once.
Presses onto the 25 mm shaft and forms the rotating raceway the balls run against.
Seats in the 52 mm housing bore as the stationary raceway, closing the race circuit.
Chrome-steel balls make point contact with both raceways, keeping rolling friction low even at speed.
Spaces the balls evenly around the raceway and stops them from touching each other during rotation.
Raceway exposed on both sides. Lowest running temperature and easiest to re-grease, but needs a clean operating environment.
Stamped steel shields keep out dust and coarse contaminants while retaining factory grease, with minimal added drag.
Contact rubber seals give the strongest protection against moisture and fine dust, suited to harsher duty cycles.
Standardized dimensions, a 1,100 kgf dynamic rating and 15,000 rpm limiting speed make the 6205 a common choice wherever a 25 mm shaft needs to spin fast under moderate radial and axial load.
Motor and pump shaft support at moderate to high rpm
Wheel bearings carrying road and steering loads
Tractors, seeders and plows in dusty, continuous duty
Drills, grinders and lawnmowers needing high-speed spin-up
Washing machine drums and fan motors
Verified feedback from procurement teams and distributors who have ordered this part — shown as submitted, with supplier replies where given.
Dimensions matched the drawing exactly and the batch was consistent — no variance across the 2,000 pieces we received. Documentation was complete and arrived before the shipment.
Good communication throughout and the sample lead time was exactly as quoted. We will move to a production order once our engineering sign-off is complete.
Asked for a non-standard seal option and they confirmed feasibility within a day. Quality has been reliable across three orders so far.
Short clips covering what the 6205 is, where it fits, and why it's one of the most widely stocked bearing sizes.
Answers to the questions we hear most often from engineers and buyers evaluating the 6205 — sizing, pricing and how it compares to its closest neighbors in the 62-series family.
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Each digit encodes a spec. “6” identifies a single-row deep groove ball bearing, “2” is the light (02) dimension series, and “05” is the bore code — multiply by 5 to get the bore in millimeters (05 × 5 = 25 mm). So the code alone tells you it's a light-series ball bearing built around a 25 mm shaft, before you ever measure it.
25 mm bore × 52 mm outer diameter × 15 mm width, per the ISO 15 metric series. Because this is a standardized envelope rather than a proprietary spec, a 6205 from any qualified manufacturer — SKF, NSK, NTN, FAG or a certified factory-direct source — will interchange in the same housing and shaft.
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Price swings with brand, seal type (OPEN / ZZ / 2RS), precision grade and order volume. Factory-direct chrome-steel 6205s in bulk run well under branded retail pricing sold in small quantities. Rather than quote one number, share your target volume and seal type and we'll return a landed price on request.
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Both share a 25 mm bore, but the 6305 belongs to the medium (03) series rather than light (02): larger OD (62 mm vs 52 mm) and width (17 mm vs 15 mm) give it roughly 45% more dynamic load capacity (≈1,610 kgf vs 1,100 kgf). Choose 6305 when the shaft stays at 25 mm but the load needs more margin than a 6205 can offer.
The 6206 stays in the same light (02) series as the 6205 but is sized for a 30 mm shaft instead of 25 mm, with a correspondingly larger OD (62 mm) and width (16 mm). It isn't a heavier-duty version of the 6205 — it's simply built for a different bore, so the choice comes down to your shaft diameter, not load requirements alone.
