NU232 -E-M1 Cylindrical Roller Bearings by FAG
NU232 -E-M1 Cylindrical Roller Bearings by FAG

FAG

Cylindrical Roller Bearings FAG NU232 -E-M1

Technical data
 
Inner diameter
160 mm
Outer diameter
290 mm
Width
48 mm
Roller rows
Single row bearing
Seal
None, open bearing
Cage
Brass cage
Clearance
Normal radial clearance
Running accuracy
Tolerance class P0/PN2 / ABEC 1
Current insulation
No current insulation
Bore
Cylindrical bore
Outer ring
Without groove/lubrication holes
Design
Floating bearing, inner ring removable on both sides
Temperature range
-30 to +150 °C
Weight
14,7 kg
Scale quantity Your discount Unit price
2 44,59 € 847,26 €
3 89,18 € 802,67 €
891,85 €
inkl. MwSt, zzgl. Versandkosten

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Cylindrical Roller Bearings FAG NU232 -E-M1
In Stock

Cylindrical Roller Bearings FAG NU232 -E-M1

The FAG NU232 -E-M1 cylindrical roller bearing is a single-row idler bearing with a brass cage, measuring 160 x 290 x 48 mm, designed for high radial loads.

As a single-row roller bearing, the NU232 -E-M1 absorbs high radial forces in heavy-duty industrial applications. This model of FAG rolling bearing is an open design with the main dimensions of 160 mm bore, 290 mm outer diameter and 48 mm width. The NU design is conceived as a pure support bearing, in which the inner ring can be removed from both sides. A solid brass cage guides the cylindrical rollers and ensures mechanical load-carrying capacity.

In which applications does the NU232 -E-M1 cylindrical roller bearing compensate for linear expansion?

The bearing is primarily used in mounting arrangements where thermal longitudinal expansion of the shaft needs to be compensated for. As the inner ring has no flanges, the shaft can be moved axially relative to the housing without generating axial constraint forces. Typical applications include heavy-duty drive trains and rotating shafts subject to high radial loads. The permissible temperature range extends from –30 to +150 degrees, ensuring the design remains functional even under elevated operating temperatures.

What is important to consider with the NU design featuring a brass cage?

When designing the system, it must be borne in mind that the NU design cannot accommodate axial forces and must therefore be combined with a suitable fixed bearing. The inner ring can be withdrawn from both sides, which facilitates the separate installation of both bearing rings. The solid brass cage ensures dimensional stability under vibrations or accelerations. As the bearing is of an open design and the outer ring has no lubrication bore, lubrication is provided externally via the adjacent structure.

What does the NU design designation mean in the case of the NU232 -E-M1 cylindrical roller bearing?

The designation NU refers to a cylindrical roller bearing with two fixed flanges on the outer ring and a flangeless inner ring. This design functions purely as a floating bearing, allowing the inner and outer rings to move relative to one another in both axial directions. This compensates for temperature-induced changes in the shaft’s length during operation without causing any stress and simplifies installation.

What are the main dimensions of the bearing?

The bearing has an inside diameter of 160 mm, an outside diameter of 290 mm and a width across flats of 48 mm. These dimensions correspond to the standardised main dimensions for single-row cylindrical roller bearings of this size. It is manufactured to the standard tolerance P0 or ABEC 1 and has a standard radial clearance.

What is the function of the brass cage marked M1?

The brass cage, marked M1, guides the rolling elements precisely and maintains a uniform spacing between them. The solid brass cage offers high dimensional stability and excellent resistance to vibrations, shocks and high accelerations. This makes it suitable for demanding industrial applications involving high dynamic loads.

How is the open cylindrical roller bearing lubricated?

As this bearing is supplied without integrated seals and the outer ring has no lubrication groove or bore, lubrication is provided via the surrounding housing structure. Depending on the operating conditions and speed, either oil or grease lubrication may be used. An external housing seal protects the open raceways from the ingress of contaminants.

What is the approved temperature range for the bearing?

The permissible operating temperature range is between -30 and +150 degrees. Both the dimensionally stable bearing rings and the brass cage are designed to withstand this temperature range. When designing the bearing assembly, it is important to ensure that the selected lubricant and the housing seals are also suitable for the respective operating temperature.

Why can the inner ring be removed from both sides?

In NU-type cylindrical roller bearings, the outer ring, together with the set of rollers and the cage, forms a single unit, whilst the flangeless inner ring can be removed separately. This allows the inner and outer rings to be fitted onto the shaft and housing one after the other. This simplifies installation, reduces the risk of damage to the raceways and facilitates maintenance work.

Schaeffler Technologies AG & Co. KG
Industriestraße 1-3, 91074 Herzogenaurach, Germany
info.de@schaeffler.com, https://www.schaeffler.de/de/meta/impressum/

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