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Bearings
Bearings
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Housings/housing Units
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Linear Technology
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V-Belts
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Seals
FAG
Cylindrical Roller Bearings FAG NU238 -E-XL-M1-C3
- Technical data
- Inner diameter
- 190 mm
- Outer diameter
- 340 mm
- Width
- 55 mm
- Roller rows
- Single row bearing
- Seal
- None, open bearing
- Cage
- Brass cage
- Clearance
- Slightly increased 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
- 23,1 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 2 | 65,38 € | 1.242,26 € |
| 3 | 130,77 € | 1.176,87 € |
Cylindrical Roller Bearings FAG NU238 -E-XL-M1-C3
The FAG NU238 -E-XL-M1-C3 cylindrical roller bearing, measuring 190 x 340 x 55 mm, offers high radial load-carrying capacity as a separable loose bearing.
The NU238 -E-XL-M1-C3 cylindrical roller bearing is a single-row radial roller bearing from FAG designed for demanding industrial applications. The design accommodates very high radial forces and guides the rolling elements in a linear fashion along the raceways. The solid brass cage maintains an even spacing between the rollers. As the open bearing is designed without sealing washers, it can be flexibly integrated into existing lubrication circuits.
What is the NU238 -E-XL-M1-C3 cylindrical roller bearing suitable for?
This bearing is primarily used in mounting arrangements where very high radial loads and operational thermal expansion occur. Due to its NU design, the unit functions purely as a non-locating bearing. The inner ring has no flanges and can be removed from either side. This allows the bearing to compensate internally for axial displacement of the shaft relative to the housing without any constraint, and without generating stress.
What distinguishes the version with C3 bearing clearance and a brass cage?
The designation C3 indicates a slightly increased radial clearance compared to the standard. This clearance compensates for operational heating or tight fits, ensuring that the rolling elements do not jam during operation. The brass cage (M1) is designed to withstand high accelerations and vibrations. Together with the permissible temperature range of -30 to +150 degrees, this design is suitable for bearing locations subject to both thermal and mechanical stress.
What are the dimensions of the NU238 -E-XL-M1-C3 cylindrical roller bearing?
The main dimensions are 190 mm bore diameter, 340 mm outside diameter and 55 mm width. The bearing complies with tolerance class P0/PN or ABEC 1. It features a single row of cylindrical rollers and an outer ring without a lubrication groove or bore.
What does the NU design designation mean for this roller bearing?
The NU design denotes a non-locating bearing in which the outer ring has two fixed guide flanges, whilst the inner ring is manufactured without flanges. The inner ring can be withdrawn from either side. This design allows both bearing rings to be fitted separately and compensates for changes in shaft length without inducing stress.
Why is the C3 clearance important in cylindrical roller bearings?
C3 refers to a radial clearance group with greater clearance than the standard bearing clearance. The material expands in the event of tight fits on the shaft or temperature differences between the inner and outer rings. The C3 clearance helps to reduce thermally induced stresses during operation and ensures the smooth running of the rolling elements.
What are the advantages of the M1 brass cage?
The solid brass cage is characterised by high strength, good run-on performance and vibration damping. It guides the cylindrical rollers reliably during periods of high acceleration or under vibration loads, and is suitable for demanding operating conditions.
How is the open cylindrical roller bearing lubricated?
As the bearing is of an open design and has no integrated seals, it must be sealed via the housing. You can operate the bearing using either grease or lubricating oil. Design for a temperature range of -30 to +150 degrees requires the use of a suitably specified lubricant.
Is the bearing electrically insulated?
No, this model does not have electrical insulation. In systems where current may flow, appropriate protective measures should be taken on the shaft or insulated bearing seats to prevent damage to the raceways.
Schaeffler Technologies AG & Co. KG
Industriestraße 1-3, 91074 Herzogenaurach, Germany
info.de@schaeffler.com, https://www.schaeffler.de/de/meta/impressum/
10004602