23224 Bearing Dimensions
23224 spherical roller bearing: bore 120 mm, dimensions 120x215x76 mm (FULI catalog). Designation breakdown, bore options and size-equivalent codes.
23224 specifications
| Bore d | 120 mm |
|---|---|
| Outside diameter D | 215 mm |
| Width B | 76 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 | 695 kN |
|---|---|
| Static load rating C0r | 930 kN |
| Speed ratings | 2,000 / 2,900 rpm — two catalogue speed columns; lubrication basis not stated |
| Weight | 12.00 kg — approx. |
Values from FULI's catalog; confirm for your application.
Nearby 23200 series sizes: 23220 bearing · 23222 bearing · 23228 bearing · 23230 bearing
Grease quantity for 23224: bearing grease fill calculator.
Buying 23224 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 23224 designation
| Segment | Meaning |
|---|---|
| 2 | Spherical roller bearing (double row, self-aligning) |
| 32 | Dimension series 32 |
| 24 | Bore code 24 → 120 mm bore. ISO bore code (00–03 = 10/12/15/17 mm; 04 and above = code × 5 mm). |
23224 interchange
23224 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 23224
FULI makes 23224 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 120 × 215 × 76 mm size.
| Dimension | Nominal, mm | Deviation, µm | Limits, mm |
|---|---|---|---|
| Bore d (Δdmp) | 120 | 0 / −20 | 120.000 / 119.980 |
| Outside diameter D (ΔDmp) | 215 | 0 / −30 | 215.000 / 214.970 |
| Width B (ΔBs) | 76 | 0 / −200 | 76.000 / 75.800 |
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 120 n6 for the shaft of 23224. The housing bore is usually H7, or J7 where the outer ring must not creep.
| Seat | Deviation, µm | Limits, mm | Fit with 23224 |
|---|---|---|---|
| Shaft 120 n6 | +45 / +23 | 120.045 / 120.023 | 23 to 65 µm interference |
| Housing 215 H7 | +46 / 0 | 215.046 / 215.000 | 0 to 76 µm clearance |
| Housing 215 J7 | +30 / −16 | 215.030 / 214.984 | 16 µm interference to 60 µm clearance |
Taking the loosest and the tightest combination of limits, a P0 23224 on a 120 mm n6 shaft has 23 to 65 µm interference. Its outer ring has 0 to 76 µm clearance in an H7 bore and 16 µm interference to 60 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.
23224 compared with nearby sizes
23224 measures 120 × 215 × 76 mm: bore d, outside diameter D and width B. Other spherical roller bearings on this site for the same 120 mm shaft are 23024 (120 × 180 × 46 mm) and 22224 (120 × 215 × 58 mm).
22224 is the lighter option on the same shaft, with the same 215 mm outside diameter and 18 mm less width (58 mm), for housings with less room. In FULI's catalog 22224 has a dynamic load rating of 630 kN against 695 kN and a weight of about 8.70 kg against 12.00 kg for 23224.
22320 has the same 215 mm outside diameter with a 100 mm bore, so it fits the same housing bore on a smaller shaft.
In the 232 series the sizes either side of 23224 are 23222 for a 110 mm shaft and 23228 for a 140 mm shaft.
| Model | Compared with this page | d × D × B (mm) | Cr (kN) | Weight (kg) |
|---|---|---|---|---|
| 23224 | This page | 120 × 215 × 76 | 695 | 12.00 |
| 23222 | Next size down | 110 × 200 × 69.8 | 600 | 9.86 |
| 23228 | Next size up | 140 × 250 × 88 | 915 | 19.00 |
| 23024 | Same bore | 120 × 180 × 46 | 355 | 4.20 |
| 22224 | Same bore | 120 × 215 × 58 | 630 | 8.70 |
| 22320 | Same outside diameter | 100 × 215 × 73 | 815 | 13.50 |
Cr and weight from FULI's catalog; — = not listed on this site.
23224 weight, load ratings and speed
FULI's catalog gives the weight of 23224 as about 12.00 kg, so 100 bearings weigh about 1200 kg and 1,000 about 12000 kg before packing. The cylindrical bore (W33) and tapered bore (K/W33) versions share this catalog line.
23224 has a dynamic load rating Cr of 695 kN and a static load rating C0r of 930 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, 2,000 and 2,900 rpm, without stating the lubrication for each column.
Values from FULI's catalog; confirm for your application.
23224 bore and clearance versions
FULI's catalog lists 23224 in two bore versions on one line, both 120 × 215 × 76 mm: 23224W33 with a cylindrical bore and 23224K/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 |
|---|---|
| 23224W33 | Cylindrical 120 mm bore, lubrication groove and holes, C0 clearance |
| 23224K/W33 | Tapered bore 1:12 for sleeve mounting, lubrication groove and holes |
| 23224W33 C3 | Cylindrical bore with C3 radial clearance |
| 23224K/W33 C3 | Tapered bore with C3 radial clearance |
23224 dimensions in inches
The nearest common inch shaft size to the 120 mm bore of 23224 is 4-3/4 in (120.65 mm), 0.65 mm larger than the bore, so 23224 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 | 120 mm | 4.7244 in |
| Outside diameter D | 215 mm | 8.4646 in |
| Width B | 76 mm | 2.9921 in |
Converted at 1 in = 25.4 mm and rounded to four decimals. The bearing itself is made to the millimetre sizes.
Grease for 23224
Relubricating 23224 from the side takes about 81.7 g each time by the formula in our grease calculator: 0.005 × D × B = 0.005 × 215 × 76. 23224W33 has a lubrication groove and holes in the outer ring; when grease goes in through them the formula is 0.002 × D × B, about 32.7 g for 23224.
How FULI supplies 23224
The standard 23224 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 23224K/W33 C3.
Tools and guides for 23224
Typical applications
- Crushers and vibrating screens
- Conveyor drums
- Fans and blowers
- Gearboxes
- Paper and textile machinery
FAQ
What is the difference between 23224 and 22224?
Both fit a 120 mm shaft. 23224 is 120 × 215 × 76 mm and 22224 is 120 × 215 × 58 mm, so 22224 has the same 215 mm outside diameter and 18 mm less width (58 mm). In FULI's catalog 22224 has a dynamic load rating of 630 kN against 695 kN and a weight of about 8.70 kg against 12.00 kg for 23224. 22224 suits a housing with less room; 23224 carries more load.
What size is 23224 in inches?
23224 is 4.7244 × 8.4646 × 2.9921 in (120 × 215 × 76 mm, d × D × B). The nearest common inch shaft size to the 120 mm bore of 23224 is 4-3/4 in (120.65 mm), 0.65 mm larger than the bore, so 23224 will not go on it. Use an inch bearing on an inch shaft.
How much does 23224 weigh?
About 12.00 kg in FULI's catalog, so 100 pieces weigh about 1200 kg before packing. The cylindrical bore (W33) and tapered bore (K/W33) versions share this catalog line.
How much grease does 23224 need?
About 81.7 g each time it is relubricated from the side (0.005 × 215 × 76).
Is 23224 the same size across brands?
Bore d, outside diameter D and width B are the same: 23224 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).