6304E is a deep groove ball designation documented on BearingIndex from 1 manufacturer publication. The published boundary dimensions are 20 × 52 × 15 mm. The designation ends in bore code 04, which resolves to a 20 mm bore under ISO 15 and matches what the manufacturers published. Every value below comes from that manufacturer’s own published material, with the date it was recorded.
| Manufacturer | Dynamic load rating (kN) | Static load rating (kN) | Limiting speed — grease (rpm) | Limiting speed — oil (rpm) | Source recorded | |
|---|---|---|---|---|---|---|
| LYC 6304E | 18.2 | 10.2 | 13000 | 16000 | 2026-09-23 | Request |
A dash means that manufacturer did not publish the value. Dimensions every source agrees on are shown above rather than repeated per row.
| Figure | How it is obtained | Result |
|---|---|---|
| Radial section height | (D − d) / 2 | 16 mm |
| Mean diameter dm | (D + d) / 2 | 36 mm |
| Speed factor dm · n | mean diameter × highest published limiting speed | 576,000 mm·min−1 |
| C / C₀ load ratio | dynamic ÷ static load rating | LYC 1.78 |
Arithmetic on the figures above — not a bearing life calculation for your load case.
Ball and roller bearings
The public product range includes ball and roller bearings. Model-level dimensions and supporting technical documents have not yet been added to this directory.
41 designations documented here · source recorded 2026-09-21
Precision class · Internal clearance · Sealing · Material · Cage material · Z class · V class · Application · Limiting speed · Lubrication · Operating temperature · Precision standard · Ring material · Rolling element material · Noise / vibration test method · Manufacturer series · Manufacturer suffix · Ball count · Ball diameter · Reference mass.
Ask the manufacturer for these when you enquire.
| Designation | Bearing family | Works |
|---|---|---|
| 21304CA | Spherical roller | 1 |
| 21304CTN1 | Spherical roller | 1 |
| 30304 | Tapered roller | 1 |
| 6304 | Deep groove ball | 3 |
| 6304-2RZ | Deep groove ball | 1 |
| 6304ZZ/2RS | Deep groove ball | 1 |
| 760304-TN | Angular contact | 1 |
| S6304ZZ/2RS | Deep groove ball | 1 |
Same envelope, but sealing, internal design, clearance and load capability differ — not interchangeable by default.
| Designation | Envelope d × D × B (mm) | Bearing family | Works |
|---|---|---|---|
| 6300 | 10 × 35 × 11 | Deep groove ball | 7 |
| 6300-2RS | 10 × 35 × 11 | Deep groove ball | 1 |
| 6300-2RZ | 10 × 35 × 11 | Deep groove ball | 1 |
| 6300E | 10 × 35 × 11 | Deep groove ball | 1 |
| 6300ZZ | 10 × 35 × 11 | Deep groove ball | 1 |
| 6300ZZ/2RS | 10 × 35 × 11 | Deep groove ball | 1 |
| 6301 | 12 × 37 × 12 | Deep groove ball | 5 |
| 6301-2RZ | 12 × 37 × 12 | Deep groove ball | 1 |
| 6301E | 12 × 37 × 12 | Deep groove ball | 1 |
| 6301T1X | 12 × 37 × 12 | Deep groove ball | 1 |
| 6301ZZ/2RS | 12 × 37 × 12 | Deep groove ball | 1 |
| 6302 | 15 × 42 × 13 | Deep groove ball | 5 |
| 6302-2RZ | 15 × 42 × 13 | Deep groove ball | 1 |
| 6302E | 15 × 42 × 13 | Deep groove ball | 1 |
| 6302T1X | 15 × 42 × 13 | Deep groove ball | 1 |
| 6302ZZ/2RS | 15 × 42 × 13 | Deep groove ball | 1 |
| 6303 | 17 × 47 × 14 | Deep groove ball | 5 |
| 6303-2RZ | 17 × 47 × 14 | Deep groove ball | 1 |
Each envelope shown is that designation’s own published size.
Tick the works you want above, then send one enquiry — each manufacturer answers you separately and cannot see the others.
Figures on this page are each manufacturer’s own published material, recorded on the dates shown. How we check sources →
