FAG NU2311 E XL M1 C4 Cylindrical Roller Bearing – Single Row 55x120x43 mm
$418.65
BRAND: FAG
ID: NU2311 E XL M1 C4
Description:
Cylindrical Roller Bearing – Single Row
Floating Bearing • Strongly Increased Clearance • Brass Cage
Category: Cylindrical Roller Bearings
Product ID: 10202900
Customs Tariff Number: 8482 5000
Manufacturer Part Number: 016739108-0040
Weight: 2.427 kg
1. Dimensions
Metric
- Inner Diameter (d): 55.000 mm
- Outer Diameter (D): 120.000 mm
- Width (B): 43.000 mm
Inch (approx.)
- Inner Diameter: 2.1654 in
- Outer Diameter: 4.7244 in
- Width: 1.6929 in
2. Product Properties
- Bearing Type: Cylindrical roller bearing
- Roller Rows: Single row
- Outer Ring: Without lubrication groove / without lubrication holes
- Seal: None – open bearing
- Radial Clearance: Strongly increased radial clearance (greater than C3; for heavy thermal/fit conditions)
- Cage: Brass cage (solid, high-strength)
- Bore Type: Cylindrical bore
- Design:
- Floating bearing
- Inner ring removable from both sides (separable design)
- Temperature Range: –30 °C to +150 °C
- Tolerance Class: P0 / PN2 (ABEC 1 type)
- Current Insulation: No current insulation
3. Technical Description
This is a single-row cylindrical roller bearing designed as a floating bearing, ideal for locations where the shaft must be able to move axially relative to the housing (for example due to thermal expansion).
Technical highlights:
- Cylindrical rollers provide a large line of contact with the raceways, giving very high radial load capacity and excellent stiffness.
- The inner ring is removable from both sides, simplifying mounting and dismounting, especially where interference fits are used on the shaft or in the housing.
- The brass cage offers:
- High mechanical strength
- Excellent performance under shock loads and vibration
- Stable behavior at elevated temperatures (up to 150 °C)
The key feature of this version is its strongly increased radial clearance. This makes it particularly suitable when:
- Operating temperatures are very high and standard or C3 clearance would close up too much
- Fits on shaft and/or housing are very tight and would otherwise eliminate internal clearance
- There is a high risk of internal preload developing under working conditions
This bearing is therefore designed for demanding applications where both heavy radial loads and severe thermal/fit conditions are present.
4. Typical Applications
- Large electric motors and generators (floating bearing side) operating at higher temperatures
- Heavy-duty industrial gearboxes and drives
- Pumps and compressors in harsh or hot environments
- Steel, paper, mining, and process industry machinery
- Any installation with:
- High radial loads
- Significant shaft/housing thermal expansion
- Tight fits and potentially high misalignment or shock
5. Key Advantages
- Very high radial load capacity from cylindrical roller design
- Floating bearing function – accommodates axial shaft movement safely
- Strongly increased radial clearance – ideal for high-temperature, tight-fit, heavy-duty applications
- Brass cage – robust, impact resistant, and suitable for up to 150 °C
- Removable inner ring – easier mounting, dismounting, and maintenance
- Standard tolerance class – interchangeable with other bearings of same size and type