Cuscinetti à rulli cilindrichi
Cylindrical Roller Bearing NU334 EM SKF KOYO TIMKEN IKO NSK
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Tipu di cuscinetti: Cuscinetti à rulli cilindrichi
Novu mudellu domesticu: NU334E
Diamitru internu (mm): 170
Diamitru esternu (mm): 360
Larghezza (mm): 72
A velocità di lubricazione di grassu (rpm): 1300
Cor(kN): 952
Cr(kN): 725
A velocità di lubricazione di l'oliu (rpm): 1700
Pesu (KG): 36
NU334E bearing model comparison
SKF:NU334EC NSK:NU334ET NTN:NU334E FAG:NU334E·TVP2 NACHI:NU334E KOYO:NU334R


| d | D | B | pesu | OEM | SKF | FAG | NSK | NTN | Impara | NACHI |
| 20 | 52 | 15 | 0.155 | NU304E | NU304EC | NU304E.TVP2 | NU304ET | NU304E | NU304R | NU304E |
| 25 | 62 | 17 | 0.251 | NU305E | NU305EC | NU305E.TVP2 | NU305ET | NU305E | NU305R | NU305E |
| 30 | 72 | 19 | 0.377 | NU306E | NU306EC | NU306E.TVP2 | NU306ET | NU306E | NU306R | NU306E |
| 35 | 80 | 21 | 0.501 | NU307E | NU307EC | NU307E.TVP2 | NU307ET | NU307E | NU307R | NU307E |
| 40 | 90 | 23 | 0.68 | NU308E | NU308EC | NU308E.TVP2 | NU308ET | NU308E | NU308R | NU308E |
| 45 | 100 | 25 | 0.93 | NU309E | NU309EC | NU309E.TVP2 | NU309ET | NU309E | NU309R | NU309E |
| 50 | 110 | 27 | 1.2 | NO310E | NU310EC | NU310E.TVP2 | NU310ET | NO310E | NU310R | NO310E |
| 55 | 120 | 29 | 1.53 | NU311E | NU311EC | NU311E.TVP2 | NU311ET | NU311E | NU311R | NU311E |
| 60 | 130 | 31 | 1.87 | NU312E | NU312EC | NU312E.TVP2 | NU312ET | NU312E | NU312R | NU312E |
| 65 | 140 | 33 | 2.31 | NU313E | NU313EC | NU313E.TVP2 | NU313ET | NU313E | NU313R | NU313E |
| 70 | 150 | 35 | 2.86 | NU314E | NU314EC | NU314E.TVP2 | NU314ET | NU314E | NU314R | NU314E |
| 75 | 160 | 37 | 3.43 | NU315E | NU315EC | NU315E.TVP2 | NU315EM | NU315E | NU315R | NU315E |
| 80 | 170 | 39 | 4.05 | NU316E | NU316EC | NU316E.TVP2 | NU316EM | NU316E | NU316R | NU316E |
| 85 | 180 | 41 | 4.82 | NU317E | NU317EC | NU317E.TVP2 | NU317EM | NU317E | NU317R | NU317E |
| 90 | 190 | 43 | 5.59 | NU318E | NU318EC | NU318E.TVP2 | NU318EM | NU318E | NU318R | NU318E |
| 95 | 200 | 45 | 6.52 | NU319E | NU319EC | NU319E.TVP2 | NU319EM | NU319E | NU319R | NU319E |
| 100 | 215 | 47 | 7.89 | NU320E | NU320EC | NU320E.TVP2 | NU320EM | NU320E | NU320R | NU320E |
| 105 | 225 | 49 | 10 | NU321E | NU321EC | NU321E.TVP2 | NU321EM | NU321E | NU321R | NU321E |
| 110 | 240 | 50 | 11 | NU322E | NU322EC | NU322E.TVP2 | NU322EM | NU322E | NU322R | NU322E |
| 120 | 260 | 55 | 14 | NU324E | NU324EC | NU324E.TVP2 | NU324EM | NU324E | NU324R | NU324E |
| 130 | 280 | 58 | 18 | NU326E | NU326EC | NU326E.TVP2 | NU326EM | NU326E | NU326R | NU326E |
| 140 | 300 | 62 | 22 | NU328E | NU328EC | NU328E.TVP2 | NU328EM | NU328E | NU328R | NU328E |
| 150 | 320 | 65 | 26 | NU330E | NU330EC | NU330E.TVP2 | NU330EM | NU330E | NU330R | NU330E |
| 160 | 340 | 68 | 31.6 | NU332E | NU332EC | NU332E.TVP2 | NU332EM | NU332E | NU332R | NU332E |
| 170 | 360 | 72 | 36 | NU334E | NU334EC | NU334E.M1 | NU334EM | NU334E | NU334R | NU334E |
| 180 | 380 | 75 | 42 | NU336E | NU336EC | NU336E.M1 | NU336EM | NU336E | NU336R | NU336E |
InchiestaU NU334 EM hè un tipu di cuscinetti à rulli cilindrichi. Here’s a breakdown of its designation and key features:
1. NU334 EM Designation:
- NON: Indica u tipu di cuscinettu. “NON” means it is a cylindrical roller bearing with two fixed ribs on the outer ring and no ribs on the inner ring. This design allows the inner ring to move axially relative to the outer ring, making it suitable for applications with axial displacement.
- 33: Refers to the series. U “33” series indicates a heavy-duty design with a larger cross-section and higher load-carrying capacity compared to lighter series.
- 4: Represents the bore size. The bore diameter can be calculated by multiplying this number by 5 (for metric bearings). So, 4 × 5 = 20 mm bore diameter.
- EM: Indicates the internal design and cage material. “EM” typically refers to a machined brass cage (gabbia di ottone solidu), which is robust and suitable for high-speed and high-temperature applications.
2. Funzioni chjave:
- Tippu: Cylindrical roller bearing (NU type).
- Capacità di carica: High radial load capacity, but not designed for axial loads (except for small axial displacements).
- Cage: Machined brass cage (EM) for durability and high-speed performance.
- APPLICAZIONI: Suitable for applications with high radial loads and where axial displacement of the shaft is expected, such as in gearboxes, electric motors, and industrial machinery.
3. Dimensioni (Typical for NU334 EM):
- Diametru di Bore (d): 170 mm
- Diametru esterno (D): 360 mm
- Larghezza (B): 72 mm
- Valutazione di carica dinamica (C): ~1,100 kN (Circa., depending on manufacturer)
- Valutazione di carica statica (C0): ~1,400 kN (Circa., depending on manufacturer)
4. APPLICAZIONI:
- Heavy machinery.
- Gearboxes.
- Motori elettrici.
- Industrial pumps.
- Steel mills.
5. Notes:
- Always verify the exact dimensions and load ratings from the manufacturer’s datasheet, as these can vary slightly between brands.
- Proper lubrication and mounting are critical for optimal performance and longevity of the bearing.
Let me know if you need further details!