6200 Series Bearings
The light series, and the one most machines are actually built around. It is the middle of the three in outside diameter, width and load capacity, which is why a 6204 or a 6205 is what turns up in a motor, a pump or a conveyor.
Light serieswhere it sits and what it trades away
The 6200 series is the light diameter series — the digit 2 in the second position. At any given bore it sits between the extra-light 6000 series and the medium 6300 series on outside diameter, width and load capacity, and that middle position is why it is the most widely stocked of the three. On a 20 mm shaft a 6204 is 47 mm across and 14 mm wide; the extra-light 6004 is 42 × 12 and the medium 6304 is 52 × 15.
The reason the light series became the default is a straightforward trade-off: the housing has to grow compared with an extra-light bearing, but the capacity bought by that extra outside diameter is usually cheaper than going to a medium series or a roller bearing. Nothing about that is a property of the standard — it is general engineering practice, and the numbers that decide it are the dimensions on these pages plus the load rating from the catalogue of the bearing you actually buy.
The series runs from 6200 (10 mm bore, 30 mm outside diameter, 9 mm wide) to 6220 (100 mm bore, 180 mm outside diameter, 34 mm wide) in the 21 designations tabulated here. The 6204 and 6205 in the middle of that range are probably the two most common rolling bearings in existence; they are also the two most commonly counterfeited, which is a reason to buy from a distributor who can show you the maker's documentation rather than from a listing that only repeats the dimensions.
Every designation in the table below links to its own page with the ISO 15 dimensions, the bore-code arithmetic, the ISO 5753-1 clearance ranges for its bore, and the same-bore comparison against the 60 and 63 series.
All 21 designationsISO 15 boundary dimensions, mm
| Designation | Bore code | d | D | B | r s min | Section (D − d)/2 |
|---|---|---|---|---|---|---|
| 6200 | 00 | 10 | 30 | 9 | 0.6 | 10 |
| 6201 | 01 | 12 | 32 | 10 | 0.6 | 10 |
| 6202 | 02 | 15 | 35 | 11 | 0.6 | 10 |
| 6203 | 03 | 17 | 40 | 12 | 0.6 | 11.5 |
| 6204 | 04 | 20 | 47 | 14 | 1 | 13.5 |
| 6205 | 05 | 25 | 52 | 15 | 1 | 13.5 |
| 6206 | 06 | 30 | 62 | 16 | 1 | 16 |
| 6207 | 07 | 35 | 72 | 17 | 1.1 | 18.5 |
| 6208 | 08 | 40 | 80 | 18 | 1.1 | 20 |
| 6209 | 09 | 45 | 85 | 19 | 1.1 | 20 |
| 6210 | 10 | 50 | 90 | 20 | 1.1 | 20 |
| 6211 | 11 | 55 | 100 | 21 | 1.5 | 22.5 |
| 6212 | 12 | 60 | 110 | 22 | 1.5 | 25 |
| 6213 | 13 | 65 | 120 | 23 | 1.5 | 27.5 |
| 6214 | 14 | 70 | 125 | 24 | 1.5 | 27.5 |
| 6215 | 15 | 75 | 130 | 25 | 1.5 | 27.5 |
| 6216 | 16 | 80 | 140 | 26 | 2 | 30 |
| 6217 | 17 | 85 | 150 | 28 | 2 | 32.5 |
| 6218 | 18 | 90 | 160 | 30 | 2 | 35 |
| 6219 | 19 | 95 | 170 | 32 | 2.1 | 37.5 |
| 6220 | 20 | 100 | 180 | 34 | 2.1 | 40 |
d = bore, D = outside diameter, B = width, r s min = minimum single chamfer dimension. All four are ISO 15 standard values and are the same for every manufacturer. The last column is derived: radial section = (D − d) / 2, the wall thickness you are working with when you size the housing. No load rating and no limiting speed appears here — see the bearings index for why.
The three series at one boresame shaft, different housing
| Series | Type | 10 mm bore | 12 mm bore | 15 mm bore | 17 mm bore | 20 mm bore |
|---|---|---|---|---|---|---|
| 6000 Series | Extra-light | 26 × 8 | 28 × 8 | 32 × 9 | 35 × 10 | 42 × 12 |
| 6200 Series | Light | 30 × 9 | 32 × 10 | 35 × 11 | 40 × 12 | 47 × 14 |
| 6300 Series | Medium | 35 × 11 | 37 × 12 | 42 × 13 | 47 × 14 | 52 × 15 |
Outside diameter × width in millimetres, for the five smallest bores in this batch. The full chart across all 21 bores and all three series is on the bearings index. Reading a row is what a machine designer does when the shaft is already fixed: the bore does not change, the housing bore does.
Frequently asked questionsreading a bearing designation
What is the difference between the 6200 and 6300 series?
The diameter series: 6200 is light, 6300 is medium. At the same bore the 6300 series has a larger outside diameter and a wider ring, so it carries more load but needs a bigger housing. On a 25 mm shaft a 6205 is 52 × 15 mm and a 6305 is 62 × 17 mm.
Why is the 6200 series so much more common than the 6000 series?
Because the middle of the range is where most machines land: a housing that will take the light series is not usually much harder to provide than one for the extra-light series, and the extra capacity is worth having. Supply follows demand — the light series is stocked in more places and in more sealing and clearance variants.
Is a 6205 the same as a 6204?
No. The bore code differs: 04 is a 20 mm bore and 05 is 25 mm. The outside diameter and width differ too — 6204 is 47 × 14 mm and 6205 is 52 × 15 mm — so they are not interchangeable in either direction.