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Bearings
Bearings
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Housings/housing Units
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Linear Technology
Linear Technology
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V-Belts
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Seals
FAG
Cylindrical Roller Bearings FAG NU318 -E-XL-M1-C3
- Technical data
- Inner diameter
- 90 mm
- Outer diameter
- 190 mm
- Width
- 43 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
- 6,1 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 2 | 20,13 € | 382,51 € |
| 5 | 40,26 € | 362,38 € |
Cylindrical Roller Bearings FAG NU318 -E-XL-M1-C3
The FAG NU318 -E-XL-M1-C3 cylindrical roller bearing, measuring 90 × 190 × 43 mm, offers a robust free-running bearing solution for high radial loads.
The NU318 -E-XL-M1-C3 cylindrical roller bearing is a single-row roller bearing from FAG designed for demanding industrial applications involving purely radial loads. Thanks to the line contact between the rollers and the raceway, this design can accommodate high transverse forces. Designed as an open bearing, the component can be flexibly integrated into existing lubrication circuits. With dimensions of 90 mm bore, 190 mm outer diameter and 43 mm width, the design is suitable for heavy-duty shaft mountings in mechanical engineering.
What is the NU318 -E-XL-M1-C3 cylindrical roller bearing suitable for?
This single-row roller bearing is primarily used as a non-locating bearing to accommodate heavy radial loads. Typical applications are found in industrial bearing arrangements subject predominantly to radial forces. As the inner ring can be removed from both sides, the bearing compensates for axial changes in shaft length directly within the bearing. This feature helps to prevent internal stresses in the surrounding structure caused by thermal expansion. The component complies with tolerance class P0/PN or ABEC 1 and operates within a temperature range of -30 to +150 degrees.
When are a brass cage and C3 bearing clearance appropriate for this bearing?
The -E-XL-M1-C3 variant features a solid brass cage (M1) and a slightly increased radial bearing clearance (C3). The brass cage reliably guides the cylindrical rollers and is particularly suitable for shock loads or vibrations. The increased C3 bearing clearance provides additional compensation when temperature differences occur between the inner and outer rings, or when tight fits reduce the radial bearing clearance after installation. This prevents overheating. As the outer ring has neither a lubrication groove nor a bore, the lubricant is supplied from the side by design.
What are the dimensions of the NU318 -E-XL-M1-C3 cylindrical roller bearing?
The bearing has an internal diameter of 90 mm, an external diameter of 190 mm and a width of 43 mm. These dimensions determine the required installation space on the shaft and in the housing seat. Due to the open design without integrated seals, the axial width remains exactly 43 mm.
What does the NU design designation mean for this cylindrical roller bearing?
The designation NU refers to a non-locating bearing with two fixed flanges on the outer ring and a flangeless inner ring. This allows the inner ring to be withdrawn from both ends, which facilitates the separate installation of both rings. This design does not accommodate axial forces, but compensates for changes in shaft length with low friction within the bearing.
Why does the cylindrical roller bearing have a clearance of C3?
Bearing clearance class C3 denotes increased radial bearing clearance compared with the standard version. This additional clearance between the rollers and raceways prevents jamming should tight fits cause the inner ring to expand or should operational heating lead to uneven expansion of the bearing rings. This is recommended for thermally demanding operating conditions.
What is the function of the M1 brass cage?
The brass cage, designated M1, is characterised by its high mechanical stability. It maintains a precise spacing between the cylindrical rollers even under vibration or dynamic loads. Furthermore, the solid cage is designed to operate across the bearing’s entire temperature range of -30 to +150 degrees.
How is this open bearing lubricated?
As an open cylindrical roller bearing, this design has no integrated seals. As the outer ring is manufactured without a lubrication groove or lubrication bore, grease or lubricating oil is supplied from the side via the bearing housing. Sealing against contamination and lubricant loss must be achieved via the surrounding housing structure.
What is the temperature range within which the component operates?
The permissible operating range extends from -30 to +150 degrees. The bearing rings, rolling elements and brass cage are designed to withstand this temperature range. To ensure trouble-free operation, it is essential to select a lubricant whose thermal specifications cover this operating range.
Schaeffler Technologies AG & Co. KG
Industriestraße 1-3, 91074 Herzogenaurach, Germany
info.de@schaeffler.com, https://www.schaeffler.de/de/meta/impressum/
10004863