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FAG
Cylindrical Roller Bearings FAG NJ2205 -E-XL-M1A-C4
- Technical data
- Inner diameter
- 25 mm
- Outer diameter
- 52 mm
- Width
- 18 mm
- Roller rows
- Single row bearing
- Seal
- None, open bearing
- Cage
- With an outer ring riding machined brass cage
- Clearance
- Strongly 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
- Support bearing (axial displacement), inner ring removable on one side
- Temperature range
- -30 to +150 °C
- Weight
- 0,184 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 15 | 4,68 € | 88,85 € |
| 30 | 9,35 € | 84,18 € |
Cylindrical Roller Bearings FAG NJ2205 -E-XL-M1A-C4
The NJ2205 -E-XL-M1A-C4 cylindrical roller bearing from FAG Rolling Bearings offers high radial load capacity with dimensions of 25x52x18 mm, featuring a brass cage and increased C4 bearing clearance.
This single-row cylindrical roller bearing, model NJ2205 -E-XL-M1A-C4, is designed as a support bearing. The NJ design features two fixed flanges on the outer ring and one fixed flange on the inner ring. This enables the bearing to withstand high radial forces and also guide shafts in an axial direction. As an open design without a seal, the bearing allows for the direct supply of grease or lubricating oil within the unit.
What is the NJ2205 -E-XL-M1A-C4 cylindrical roller bearing suitable for?
The NJ design is primarily suitable for applications where, in addition to high transverse forces, unilateral guiding forces occur in the axial direction. As the inner ring can be removed from one side, the separate assembly of the shaft and housing is straightforward. Typical applications are found in general mechanical and plant engineering, where thermal linear expansion of the shaft in the opposite direction needs to be compensated for without constraint.
What are the advantages of a brass cage and C4 clearance?
The solid, externally guided brass cage (M1A) is characterised by high mechanical strength and guides the rollers precisely along the outer ring, even under high acceleration. The version with C4 bearing clearance has significantly increased radial clearance. This effectively accommodates operational thermal expansion within a temperature range of -30 to +150 degrees. In combination with tolerance class P0/PN or ABEC 1, this provides a tailored solution for thermally demanding applications.
What are the main dimensions of the NJ2205 -E-XL-M1A-C4 cylindrical roller bearing?
With an internal diameter of 25 mm, an external diameter of 52 mm and a width of 18 mm, this bearing complies with the standardised main dimensions for this size. Before installation, it is advisable to check that the shaft seat and housing bore correspond to these mounting dimensions.
What does the ‘NJ’ design designation mean for this bearing?
In the NJ design, the bearing has two fixed flanges on the outer ring and one fixed flange on the inner ring. This design acts as a thrust bearing: it supports high radial loads and locks the shaft axially in one direction, whilst allowing axial movement in the opposite direction.
Why does this bearing have a clearance rating of C4?
The C4 rating denotes a significantly increased radial bearing clearance, exceeding the standard bearing clearance and that of class C3. The increased radial clearance prevents the bearing from becoming unduly stressed in the event of large temperature differences between the inner and outer rings or in the case of tight fits.
What are the key features of the M1A cage?
The M1A cage is manufactured as a solid brass cage and is mounted on the outer ring via an external guide. Brass cages offer exceptional mechanical stability. The external guidance relieves the rolling elements of the load from the guide forces, which has a beneficial effect on the rolling element guidance in the event of vibrations and rapid changes in speed.
In what temperature range can the bearing be used?
The cylindrical roller bearing is designed for operating temperatures ranging from -30 to +150 degrees. As this is an open design without abiding sealing elements, the actual operating limits depend on the lubricant selected and the dimensional accuracy of the connecting components.
How is the open bearing lubricated?
As an open bearing without sealing washers and without a lubrication bore in the outer ring, the lubricant is supplied via the housing. Depending on the design, oil circulation, an oil bath or greasing during assembly may be suitable. An external housing seal protects the rolling elements from the ingress of dirt.
Schaeffler Technologies AG & Co. KG
Industriestraße 1-3, 91074 Herzogenaurach, Germany
info.de@schaeffler.com, https://www.schaeffler.de/de/meta/impressum/
10002309