24188 Spherical Roller Bearing Dimensions
The ENRO 24188 is a spherical roller bearing in the 24100 series, 440 × 720 × 280 mm. Boundary dimensions follow the ISO 15 dimension series.
Three checks for the 24188
Most wrong replacements come from one of these. Each answer below comes from the ENRO model table.
Does the size match?
Measure bore, outside diameter and width. The 24188 is 440 × 720 × 280 mm. If one value differs, see the adjacent sizes below.
Adjacent sizes →Which version do you need?
ENRO lists 2 versions: 24188W33, 24188K30/W33. Match the seals, shields or bore type of the old bearing.
Versions table →Is the load rating enough?
Cr 7500 kN, C0r 13200 kN (catalog reference values). Check the life at your load and speed.
Life calculator →Not sure which one you have? Send any part number and we'll match the dimensionally equivalent ENRO model.
Check my 2418824188 dimensions and ratings
| Bore diameterd | 440 mm |
|---|---|
| Outside diameterD | 720 mm |
| WidthB | 280 mm |
| Chamfer dimension, min.r min | 6 mm |
| Basic dynamic load ratingCr | 7500 kN |
| Basic static load ratingC0r | 13200 kN |
| Limiting speed, greasen grease | 400 rpm |
| Limiting speed, oiln oil | 700 rpm |
| Weight (approx.)m | 460 kg |
| Series | 24100 |
| Material | GCr15 / GCr15SiMn chrome steel |
| Precision class | P0, P6 |
| Cage | Steel, brass |
| Origin | Made in China — Japanese-standard quality management |
Load ratings, limiting speeds and weights are catalog reference values. Values are confirmed per batch on request.
What “24188” means
- 241 — bearing type and dimension series code.
- 88 — bore code: code 88 × 5 = 440 mm.
24188 variants: 24188W33 / 24188K30/W33
| Order as | Meaning |
|---|---|
| 24188W33 | Lubrication groove and holes. Groove and holes in the outer ring for relubrication. |
| 24188K30/W33 | Tapered bore 1:30 + Lubrication groove and holes. Tapered bore, taper 1:30, used on wide series such as 240 and 241. Groove and holes in the outer ring for relubrication. |
Internal clearance (for example CN or C3) is stated on your RFQ. Suffix selector →
Print or save this table as PDF, or ask us to send the spec sheet with your quote.
Selection notes for the 24188
How this size sits against its neighbours in the 24100 series and the other spherical roller bearing series with the same bore. Every figure is from the ENRO model table.
- The 24188 is the twenty-third of twenty-six sizes ENRO lists in the 24100 series, 440 × 720 × 280 mm.
- Next size down, the 24184, is 420 × 700 × 280 mm: twenty millimetres less bore, twenty millimetres less outside diameter, the same width.
- Next size up, the 24192, is 460 × 760 × 300 mm: twenty millimetres more bore, 40 mm more outside diameter, twenty millimetres wider.
- Five other ENRO spherical roller bearings share the 440 mm bore: the 24088 (24000 series) is 650 × 212 mm, 70 mm less outside diameter and 68 mm narrower; the 23288 (23200 series) is 790 × 280 mm, 70 mm more outside diameter and the same width.
- The 24188 has a radial section of 140 mm ((D − d) / 2) on a 280 mm width, so its cross-section is wider than it is tall.
- Catalog reference values for the 24188: Cr 7500 kN, C0r 13200 kN, limiting speed 400 rpm with grease, 700 rpm with oil, weight 460 kg.
- Catalog dynamic load rating Cr is 7500 kN for the 24188 against 7350 kN for the 24184 (marginally less, 150 kN or 2%) and 8300 kN for the 24192 (noticeably more, 800 kN or 11%).
- ENRO lists the 24188 in two versions: 24188W33, 24188K30/W33. In the same series, the 24184 is listed in the same two versions; the 24192 is listed in the same two versions.
24188 bearing dimensions: range and series
26 sizes in the 24100 series.
Click a model to open its full specification page.
| Model | d mm | D mm | B mm | Cr kN | C0r kN | Grease rpm | Weight kg | Open model page |
|---|---|---|---|---|---|---|---|---|
| 24168 | 340 | 580 | 243 | 5300 | 8650 | 600 | 280.0 | |
| 24172 | 360 | 600 | 243 | 5600 | 9300 | 560 | 280 | |
| 24176 | 380 | 620 | 243 | On request | On request | On request | On request | |
| 24180 | 400 | 650 | 250 | 6200 | 10600 | 430 | 340 | |
| 24184 | 420 | 700 | 280 | 7350 | 12600 | 400 | 445 | |
| 24188 | 440 | 720 | 280 | 7500 | 13200 | 400 | 460 | This page |
| 24192 | 460 | 760 | 300 | 8300 | 14600 | 360 | 560.0 | |
| 24196 | 480 | 790 | 308 | 8000 | 15800 | 340 | 605.0 | |
| 241/500 | 500 | 830 | 325 | 9800 | 17000 | 320 | 700.0 |
Catalog reference values. Full 24100 series table →
If the 24188 is not quite right
Nearest ENRO sizes by bore and by series. Check the housing and shaft before switching.
Other series with a 440 mm bore
Click a model to open its full specification page.
| Model | Series | d | D | B | Cr kN | Open model page |
|---|---|---|---|---|---|---|
| 24188 | 24100 | 440 | 720 | 280 | 7500 | This page |
| 23988 | 23900 | 440 | 600 | 118 | 2450 | |
| 23088 | 23000 | 440 | 650 | 157 | 3850 | |
| 24088 | 24000 | 440 | 650 | 212 | 4800 | |
| 23188 | 23100 | 440 | 720 | 226 | 6000 | |
| 23288 | 23200 | 440 | 790 | 280 | 7800 |
Same 720 mm outside diameter, different bore
Click a model to open its full specification page.
Specifications and boundary dimensions
Built to be checked, not believed. Boundary dimensions follow the ISO 15 dimension series. Ratings follow ISO 281 and clearance groups ISO 5753-1; every value on a model page can be checked against the standard.
Boundary dimensions
Boundary dimensions follow the ISO 15 dimension series. Same base number, same d, D and B.
Tolerances
Defines the tolerance classes for radial bearings. State the class you need on the RFQ.
Internal clearance
Defines the clearance groups C2, CN, C3, C4 and C5. State the group you need on the RFQ.
Rating life
Basis of the L10 basic rating life. Use it with the catalog Cr in our life calculator.
Japan-managed quality control
ENRO is a bearing brand for distributors and MRO buyers. Our QC protocol follows Japanese industrial quality practice. Our bearings are made in China.
100% outgoing inspection
Every ENRO bearing — not a sample, every unit — passes outgoing inspection before shipment.
Same color, same box, same label
Every order ships in the same color box with the same label, so repeat shipments match on the shelf.
How to order the 24188: packing and marking
- Version
- Cylindrical or tapered bore (K, K30), with or without W33.
- Clearance group
- CN, C3 or another group. State it per line.
- Quantity per line
- Quantities per model and whether the order repeats.
- Marking options
- ENRO packing, OEM / private label or neutral packaging. State which one per line.
- Destination
- Port or country the order ships to.
Free samples are available.
Get a quote for a 24188
- Model or part number for each line
- Quantity per line
- Seal or shield, snap ring or bore type
- Clearance group, if not CN
- Destination port or country
We reply within 24 hours on business days.
Quote 24188Engineering tools built on our catalog data
24188 FAQ
What are the dimensions of the 24188 spherical roller bearing?
The 24188 has a bore (d) of 440 mm, an outside diameter (D) of 720 mm and a width (B) of 280 mm. Minimum chamfer r is 6 mm.
What load rating does the 24188 have?
Catalog reference values: basic dynamic load rating Cr 7500 kN, static rating C0r 13200 kN, limiting speed 400 rpm with grease. Values are confirmed per batch on request.
Which versions of the 24188 can I order?
ENRO lists the 24188 as 24188W33 (Lubrication groove and holes), 24188K30/W33 (Tapered bore 1:30 + Lubrication groove and holes). State the clearance group you need in your RFQ.
Is the ENRO 24188 interchangeable with other brands' 24188?
Boundary dimensions follow the ISO 15 dimension series. The ENRO 24188 is dimensionally interchangeable with other brands' 24188 of the same size. Confirm seal, clearance and cage requirements in your RFQ.
Where are ENRO bearings made?
ENRO bearings are Made in China by partner factories, under Japan-managed quality control. Every unit passes 100% outgoing inspection before shipment.
Which bearings have the same bore as the 24188?
In the ENRO range, 23988 (440 × 600 × 118 mm), 23088 (440 × 650 × 157 mm), 24088 (440 × 650 × 212 mm), 23188 (440 × 720 × 226 mm) share the 440 mm bore. Outside diameter and width differ, so check the housing before switching.
Which clearance group should I order for the 24188?
CN (normal) suits most positions. C3 is common where the inner ring runs warmer than the outer ring, as in electric motors. Groups are defined in ISO 5753-1; state the one you need in your RFQ.
Quote the 24188
Send any part number and we'll match the dimensionally equivalent ENRO model. We reply within 24 hours on business days.