23220 Bearing Dimensions
23220 spherical roller bearing: bore 100 mm, dimensions 100x180x60.3 mm (FULI catalog). Designation breakdown, bore options and size-equivalent codes.
23220 specifications
| Bore d | 100 mm |
|---|---|
| Outside diameter D | 180 mm |
| Width B | 60.3 mm |
| Seal / shield options | Open |
| Material | GCr15 chrome bearing steel (rings and rolling elements) |
| Precision | P0 (standard); P6 on request |
| Radial clearance | C0 (standard); C3 on request |
Load ratings & speed
| Dynamic load rating Cr | 475 kN |
|---|---|
| Static load rating C0r | 600 kN |
| Speed ratings | 2,400 / 3,400 rpm — two catalogue speed columns; lubrication basis not stated |
| Weight | 6.85 kg — approx. |
Values from FULI's catalog; confirm for your application.
Nearby 23200 series sizes: 23222 bearing · 23224 bearing
Grease quantity for 23220: bearing grease fill calculator.
Buying 23220 in quantity? See bearing wholesale supplier for pricing by quantity and shipping, and bearing manufacturer in China for how to check the factory.
How to read the 23220 designation
| Segment | Meaning |
|---|---|
| 2 | Spherical roller bearing (double row, self-aligning) |
| 32 | Dimension series 32 |
| 20 | Bore code 20 → 100 mm bore. ISO bore code (00–03 = 10/12/15/17 mm; 04 and above = code × 5 mm). |
23220 interchange
23220 is an ISO designation: bore d, outside diameter D and width B are the same at each maker. The letters each maker adds are design and cage codes, not seal codes; K marks a tapered bore, and each maker marks the oil groove and holes in its own way. Send us the full number on your old bearing and we confirm the match.
Brand names are trademarks of their respective owners. FULI is not affiliated with, authorized by or endorsed by these companies. Part numbers are shown for interchange reference only. FULI dimensions, load ratings and speeds come from the FULI catalog.
Tolerances and fits for 23220
FULI makes 23220 to P0 as standard, with P6 on request. P0 is the Normal tolerance class of ISO 492; P6 limits are tighter. These are the P0 limits for the 100 × 180 × 60.3 mm size.
| Dimension | Nominal, mm | Deviation, µm | Limits, mm |
|---|---|---|---|
| Bore d (Δdmp) | 100 | 0 / −20 | 100.000 / 99.980 |
| Outside diameter D (ΔDmp) | 180 | 0 / −25 | 180.000 / 179.975 |
| Width B (ΔBs) | 60.3 | 0 / −200 | 60.300 / 60.100 |
Δdmp and ΔDmp: deviation of the mean bore and mean outside diameter in one radial plane. ΔBs: inner ring width; the outer ring width has the same limits.
Shaft and housing fits (general guidance)
For an inner ring that turns with a solid steel shaft under normal load, bearing makers’ fit tables give 100 m6 for the shaft of 23220. The housing bore is usually H7, or J7 where the outer ring must not creep.
| Seat | Deviation, µm | Limits, mm | Fit with 23220 |
|---|---|---|---|
| Shaft 100 m6 | +35 / +13 | 100.035 / 100.013 | 13 to 55 µm interference |
| Housing 180 H7 | +40 / 0 | 180.040 / 180.000 | 0 to 65 µm clearance |
| Housing 180 J7 | +26 / −14 | 180.026 / 179.986 | 14 µm interference to 51 µm clearance |
Taking the loosest and the tightest combination of limits, a P0 23220 on a 100 mm m6 shaft has 13 to 55 µm interference. Its outer ring has 0 to 65 µm clearance in an H7 bore and 14 µm interference to 51 µm clearance in a J7 bore.
This is general guidance, not a FULI specification. Heavy or shock loads, a hollow shaft, a thin-walled, split or light-alloy housing, or a large temperature difference between shaft and housing call for other classes, and the drawing of your machine takes priority. A tight shaft fit or a hot housing uses up internal clearance, and that is when C3 is chosen instead of C0.
If the outer ring turns and the shaft stands still, as in an idler pulley or a wheel hub, the fits are reversed: the housing gets the interference fit (for example N7 or P7) and the shaft a sliding one (g6 or h6).
Sources: ISO 492 tables as printed in the NTN catalogue CAT. No. 2203/E (Tables 6.4 and 6.5) and the RKB tolerance catalogue; ISO 286-2 for the seats; SKF and NTN fit tables for the shaft and housing classes.
23220 compared with nearby sizes
23220 measures 100 × 180 × 60.3 mm: bore d, outside diameter D and width B. Other spherical roller bearings on this site for the same 100 mm shaft are 22220 (100 × 180 × 46 mm) and 22320 (100 × 215 × 73 mm).
22320 is the next heavier choice for a 100 mm shaft, with an outside diameter 35 mm larger (215 mm) and 12.7 mm more width (73 mm). In FULI's catalog 22320 has a dynamic load rating of 815 kN against 475 kN and a weight of about 13.50 kg against 6.85 kg for 23220.
22220 is the lighter option on the same shaft, with the same 180 mm outside diameter and 14.3 mm less width (46 mm), for housings with less room. In FULI's catalog 22220 has a dynamic load rating of 428 kN against 475 kN and a weight of about 4.90 kg against 6.85 kg for 23220.
23024 has the same 180 mm outside diameter with a 120 mm bore, so it fits the same housing bore on a larger shaft.
In the 232 series the sizes either side of 23220 are 23222 for a 110 mm shaft.
| Model | Compared with this page | d × D × B (mm) | Cr (kN) | Weight (kg) |
|---|---|---|---|---|
| 23220 | This page | 100 × 180 × 60.3 | 475 | 6.85 |
| 23222 | Next size up | 110 × 200 × 69.8 | 600 | 9.86 |
| 22220 | Same bore | 100 × 180 × 46 | 428 | 4.90 |
| 22320 | Same bore | 100 × 215 × 73 | 815 | 13.50 |
| 23024 | Same outside diameter | 120 × 180 × 46 | 355 | 4.20 |
Cr and weight from FULI's catalog; — = not listed on this site.
23220 weight, load ratings and speed
FULI's catalog gives the weight of 23220 as about 6.85 kg, so 100 bearings weigh about 685 kg and 1,000 about 6850 kg before packing. The cylindrical bore (W33) and tapered bore (K/W33) versions share this catalog line.
23220 has a dynamic load rating Cr of 475 kN and a static load rating C0r of 600 kN. Cr is the load used to work out rating life; C0r is the reference for loads carried while the bearing is stationary or turning slowly. The catalog lists two speed values, 2,400 and 3,400 rpm, without stating the lubrication for each column.
Values from FULI's catalog; confirm for your application.
23220 bore and clearance versions
FULI's catalog lists 23220 in two bore versions on one line, both 100 × 180 × 60.3 mm: 23220W33 with a cylindrical bore and 23220K/W33 with a 1:12 tapered bore. W33 marks the lubrication groove and holes in the outer ring. The K version is mounted on an adapter sleeve, a withdrawal sleeve or a tapered shaft seat. Radial clearance is C0 as standard and C3 on request.
| Designation | What it is |
|---|---|
| 23220W33 | Cylindrical 100 mm bore, lubrication groove and holes, C0 clearance |
| 23220K/W33 | Tapered bore 1:12 for sleeve mounting, lubrication groove and holes |
| 23220W33 C3 | Cylindrical bore with C3 radial clearance |
| 23220K/W33 C3 | Tapered bore with C3 radial clearance |
23220 dimensions in inches
The nearest common inch shaft size to the 100 mm bore of 23220 is 3-15/16 in (100.01 mm), 0.01 mm larger than the bore, so 23220 will not go on it. Inch shafts need an inch bearing, not a metric one with a sleeve or shim.
| Dimension | Millimetres | Inches |
|---|---|---|
| Bore d | 100 mm | 3.9370 in |
| Outside diameter D | 180 mm | 7.0866 in |
| Width B | 60.3 mm | 2.3740 in |
Converted at 1 in = 25.4 mm and rounded to four decimals. The bearing itself is made to the millimetre sizes.
Grease for 23220
Relubricating 23220 from the side takes about 54.3 g each time by the formula in our grease calculator: 0.005 × D × B = 0.005 × 180 × 60.3. 23220W33 has a lubrication groove and holes in the outer ring; when grease goes in through them the formula is 0.002 × D × B, about 21.7 g for 23220.
How FULI supplies 23220
The standard 23220 from FULI has GCr15 chrome steel rings and rollers, P0 precision and C0 radial clearance, with P6 and C3 on request.
Rings are marked with a brand you are authorised to use, with the FULI brand, or left neutral, as your order states. The box is printed with the model, precision class and brand.
Inquiries that leave out the prefix or suffix letters are the usual cause of a wrong quote, so write the full designation, for example 23220K/W33 C3.
Tools and guides for 23220
Typical applications
- Crushers and vibrating screens
- Conveyor drums
- Fans and blowers
- Gearboxes
- Paper and textile machinery
FAQ
What is the difference between 23220 and 22320?
Both fit a 100 mm shaft. 23220 is 100 × 180 × 60.3 mm and 22320 is 100 × 215 × 73 mm, so 22320 has an outside diameter 35 mm larger (215 mm) and 12.7 mm more width (73 mm). In FULI's catalog 22320 has a dynamic load rating of 815 kN against 475 kN and a weight of about 13.50 kg against 6.85 kg for 23220. Choose 22320 for a higher load where the housing has room for it; 23220 keeps the housing smaller.
What is the difference between 23220 and 22220?
Both fit a 100 mm shaft. 23220 is 100 × 180 × 60.3 mm and 22220 is 100 × 180 × 46 mm, so 22220 has the same 180 mm outside diameter and 14.3 mm less width (46 mm). In FULI's catalog 22220 has a dynamic load rating of 428 kN against 475 kN and a weight of about 4.90 kg against 6.85 kg for 23220. 22220 suits a housing with less room; 23220 carries more load.
What size is 23220 in inches?
23220 is 3.9370 × 7.0866 × 2.3740 in (100 × 180 × 60.3 mm, d × D × B). The nearest common inch shaft size to the 100 mm bore of 23220 is 3-15/16 in (100.01 mm), 0.01 mm larger than the bore, so 23220 will not go on it. Use an inch bearing on an inch shaft.
How much does 23220 weigh?
About 6.85 kg in FULI's catalog, so 100 pieces weigh about 685 kg before packing. The cylindrical bore (W33) and tapered bore (K/W33) versions share this catalog line.
How much grease does 23220 need?
About 54.3 g each time it is relubricated from the side (0.005 × 180 × 60.3).
Is 23220 the same size across brands?
Bore d, outside diameter D and width B are the same: 23220 is an ISO designation. The letters each maker adds (SKF E or CC, NSK CE4, EAE4 or CDE4, NTN EAD1, Koyo RZ, NACHI EX or E, FAG E1-XL) are design and cage codes, not seal codes. K marks a tapered bore, and the oil groove and holes are marked differently by each maker (SKF W33, NSK E4, NTN D1).