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FAG
Cylindrical Roller Bearings FAG NJ308 -E-XL-TVP2
- Technical data
- Inner diameter
- 40 mm
- Outer diameter
- 90 mm
- Width
- 23 mm
- Roller rows
- Single row bearing
- Seal
- None, open bearing
- Cage
- Polyamide 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
- Support bearing (axial displacement), inner ring removable on one side
- Temperature range
- -30 to +120 °C
- Weight
- 0,673 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 15 | 3,31 € | 62,77 € |
| 30 | 6,60 € | 59,48 € |
Cylindrical Roller Bearings FAG NJ308 -E-XL-TVP2
The FAG NJ308 -E-XL-TVP2 single-row cylindrical roller bearing (40x90x23 mm) withstands high radial loads and provides single-sided axial support for shafts.
The NJ308 -E-XL-TVP2 cylindrical roller bearing is an open, single-row radial rolling bearing from FAG designed for demanding industrial applications. The bearing design features two fixed flanges on the outer ring and one fixed flange on the inner ring. This makes this model suitable as a support bearing, designed to specifically accommodate not only high radial forces but also axial guidance forces from a single direction. The polyamide cage ensures flexible, low-vibration guidance of the cylindrical rollers.
What is the NJ308 -E-XL-TVP2 cylindrical roller bearing suitable for?
This support bearing is used where rotating shafts, subject to high radial forces, also require single-sided axial guidance. Typical applications include industrial drives and shaft mountings with combined load profiles. Thanks to the line contact between the cylindrical rollers and raceways, the unit is designed for high dynamic loads. The axial displacement in the opposite direction allows for the unimpeded compensation of thermally induced changes in the shaft’s length.
What are the distinctive features of the NJ design with a polyamide cage?
The NJ design features an inner ring that can be removed from one side, which simplifies the separate assembly of both bearing rings. The integrated polyamide cage (TVP2) ensures quiet roller guidance and reduces weight compared with designs featuring a metal cage. The component is designed for a temperature range of -30 to +120 degrees. As an open roller bearing without sealing elements, it requires suitable external sealing as well as a continuous supply of lubricant via the housing environment.
What are the dimensions of the NJ308 -E-XL-TVP2 cylindrical roller bearing?
This roller bearing has a bore of 40 mm, an outer diameter of 90 mm and a width of 23 mm. It complies with the standard tolerance class P0/PN (ABEC 1) and has an outer ring without a lubrication groove or bores.
What does the ‘NJ’ design designation mean for this bearing?
The NJ design features a support bearing with two fixed flanges on the outer ring and one fixed flange on the inner ring. This design can accommodate radial forces as well as axial guidance loads from one direction. In the opposite direction, the bearing allows for axial displacement of the shaft.
What are the features of the TVP2 cage?
The suffix TVP2 denotes a polyamide window cage. This material is characterised by its low mass, elasticity and good running characteristics. It contributes to quiet operation and is designed for operating temperatures ranging from -30 to +120 degrees.
What is the clearance in the NJ308 -E-XL-TVP2 cylindrical roller bearing?
The bearing has the standard radial clearance (CN). This standard value is suitable for common mounting fits and moderate temperature differences between the inner and outer rings. For special applications involving significant heating, designers may opt for bearing clearance classes with greater clearance.
How is the open cylindrical roller bearing lubricated and sealed?
As the bearing is supplied from the factory without either sealing washers or grease, lubrication is provided by oil or grease from the surrounding housing environment. The bearing housing should be protected from contamination by external seals, such as shaft seals, in order to prevent premature wear of the contact surfaces.
Can the inner ring be fitted separately during assembly?
The inner ring of the NJ bearing can be removed from one side and can be fitted onto the shaft separately from the pre-assembled roller set. This ability to dismantle the bearing considerably facilitates both mechanical assembly and the subsequent removal of the shaft and housing.
Schaeffler Technologies AG & Co. KG
Industriestraße 1-3, 91074 Herzogenaurach, Germany
info.de@schaeffler.com, https://www.schaeffler.de/de/meta/impressum/
10002814