NJ2318 -E-XL-TVP2 Cylindrical Roller Bearings by FAG
NJ2318 -E-XL-TVP2 Cylindrical Roller Bearings by FAG

FAG

Cylindrical Roller Bearings FAG NJ2318 -E-XL-TVP2

Technical data
 
Inner diameter
90 mm
Outer diameter
190 mm
Width
64 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
8,15 kg
Scale quantity Your discount Unit price
2 20,25 € 384,78 €
5 40,50 € 364,53 €
405,03 €
exkl. MwSt, zzgl. Versandkosten

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Cylindrical Roller Bearings FAG NJ2318 -E-XL-TVP2
In Stock

Cylindrical Roller Bearings FAG NJ2318 -E-XL-TVP2

The NJ2318 -E-XL-TVP2 cylindrical roller bearing, measuring 90 × 190 × 64 mm, accommodates high radial forces as well as unilateral axial loads during operation.

The FAG NJ2318 -E-XL-TVP2 cylindrical roller bearing is a single-row rolling bearing for industrial applications. As an open radial roller bearing without a seal, this version is designed for use in externally lubricated environments. The polyamide cage guides the cylindrical rollers and ensures smooth running. With a bore of 90 mm, an outside diameter of 190 mm and a width of 64 mm, this roller bearing withstands high radial forces.

What loads does the NJ2318 -E-XL-TVP2 cylindrical roller bearing accommodate as a support bearing?

As a support bearing, this design accommodates not only high radial forces but also axial forces from one direction, whilst the inner ring remains removable from one side. The defined displacement within the bearing compensates for axial shaft expansion in the opposite direction. This design also facilitates the separate mounting of the inner and outer rings onto the shaft and housing.

What properties do the polyamide cage and standard bearing clearance offer in the NJ2318 -E-XL-TVP2?

The polyamide cage with the TVP2 suffix reduces the weight of the rotating components compared with metal versions and ensures smooth running. The cage material retains its dimensional stability at operating temperatures ranging from –30 to +120 degrees. Together with the standard radial bearing clearance and tolerance class P0 or ABEC 1, the bearing is designed for standard operating conditions. As the outer ring has no groove or lubrication bore, the lubricant is supplied from the side via the housing.

What are the distinctive features of the NJ design in cylindrical roller bearings?

The NJ design features two fixed flanges on the outer ring and one fixed flange on the inner ring. This enables the component to act as a support bearing. In addition to high radial forces, it also accommodates axial guidance loads from one direction. At the same time, the inner ring, which can be removed from one side, allows for straightforward, separate mounting of the bearing rings onto the shaft and housing.

What are the main dimensions of the NJ2318 -E-XL-TVP2 cylindrical roller bearing?

This bearing has an internal diameter of 90 mm, an external diameter of 190 mm and a width of 64 mm. The dimensional and running tolerances of the bearing comply with the standard tolerance class P0 and ABEC 1 respectively for general mechanical and plant engineering.

What does the suffix ‘TVP2’ mean in relation to this roller bearing?

The suffix TVP2 indicates a polyamide cage. This material dampens vibrations in the rolling element set, operates quietly and has a low mass. The polyamide cage is suitable for operating temperatures between –30 and +120 degrees and is compatible with standard lubricating oils and greases in continuous industrial use.

How does a support bearing differ from a non-support bearing?

A floating bearing freely compensates for axial length changes in both directions, but does not absorb any axial forces. A thrust bearing, such as the NJ type, on the other hand, transmits axial forces in one axial direction. In the opposite direction, it still allows for axial displacement of the shaft relative to the housing.

Why is the NJ2318 -E-XL-TVP2 cylindrical roller bearing designed as an open bearing?

As an open cylindrical roller bearing, this model has neither sealing rings nor cover plates. This allows the lubricant – such as gearbox oil or grease – to reach the rollers and raceways unhindered. The user must provide a seal on the housing side of the bearing location to prevent the ingress of dirt particles and moisture from the outside.

What is the clearance in the cylindrical roller bearing?

The bearing is manufactured with standard radial clearance. This clearance class provides sufficient leeway for standard shaft and housing bore fits, without causing any unacceptable stress in the cylindrical rollers at normal operating temperatures. For applications involving extreme thermal expansion, larger bearing clearance groups are selected as an alternative.

Schaeffler Technologies AG & Co. KG
Industriestraße 1-3, 91074 Herzogenaurach, Germany
info.de@schaeffler.com, https://www.schaeffler.de/de/meta/impressum/

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