NJ318 -E-XL-TVP2 Cylindrical Roller Bearings by FAG
NJ318 -E-XL-TVP2 Cylindrical Roller Bearings by FAG

FAG

Cylindrical Roller Bearings FAG NJ318 -E-XL-TVP2

Technical data
 
Inner diameter
90 mm
Outer diameter
190 mm
Width
43 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
5,49 kg
Scale quantity Your discount Unit price
2 14,59 € 277,16 €
5 29,18 € 262,57 €
291,75 €
exkl. MwSt, zzgl. Versandkosten

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Cylindrical Roller Bearings FAG NJ318 -E-XL-TVP2
In Stock

Cylindrical Roller Bearings FAG NJ318 -E-XL-TVP2

The FAG NJ318 -E-XL-TVP2 cylindrical roller bearing is a single-row support bearing with a 90 mm bore, an outer diameter of 190 mm and a polyamide cage designed for high radial loads.

As a single-row roller bearing, the FAG NJ318 -E-XL-TVP2 cylindrical roller bearing can withstand high radial loads. With dimensions of 90 mm inner diameter and 190 mm outer diameter, and a width of 43 mm, the bearing is suitable for demanding applications in mechanical engineering. The open design without a seal allows lubrication via the housing environment. With standard radial clearance and tolerance class P0 or ABEC 1, this roller bearing fits precisely into standardised machine components.

What is the NJ318 -E-XL-TVP2 cylindrical roller bearing suitable for in mechanical engineering?

This bearing serves as a support bearing in designs where high radial forces and unilateral axial forces occur. Typical applications include bearing arrangements with unilateral guidance and a required axial compensation travel. The line contact of the cylindrical rollers contributes to high radial rigidity. As the outer ring is manufactured without a groove or lubrication bore, lubricant is supplied to the roller tracks via the housing or circulating oil systems.

What are the distinctive features of the NJ design with a polyamide cage?

The NJ bearing design features two fixed flanges on the outer ring and one fixed flange on the inner ring. This enables the bearing to absorb axial forces in one direction and compensate for axial displacement in the opposite direction. The inner ring can be removed from one side, which facilitates the separate assembly of both bearing rings. The polyamide cage (TVP2) guides the rollers within a permissible temperature range of -30 to +120 degrees.

What are the main dimensions of the NJ318 -E-XL-TVP2 cylindrical roller bearing?

The bearing has a bore of 90 mm, an outer diameter of 190 mm and a width of 43 mm. These dimensions determine the installation space required on the shaft and within the bearing housing. Before installation, check that the mating surfaces of the shaft and the housing correspond to these nominal dimensions.

What does the ‘NJ’ design designation mean for this cylindrical roller bearing?

The designation NJ refers to a cylindrical roller bearing with two fixed flanges on the outer ring and one fixed flange on the inner ring. This design acts as a support bearing: it accommodates radial loads and axial forces in one direction, whilst allowing the shaft to expand or contract in the opposite direction.

What are the characteristics of the TVP2 polyamide cage?

The polyamide cage maintains a uniform spacing between the cylindrical rollers and dampens operating noise during operation. This design reduces the moving mass within the bearing compared with versions featuring a metal cage. The material is designed to retain its dimensional stability at operating temperatures ranging from -30 to +120 degrees.

What type of seal is fitted in the NJ318 -E-XL-TVP2 cylindrical roller bearing?

This model is an open bearing with no integrated seals or cover plates. Grease or lubricating oil can therefore reach the raceways and rolling elements unhindered. To protect against contamination and moisture, external sealing via the surrounding housing structure of the respective machine is recommended.

What does the specification for the standard radial bearing clearance mean?

Standard radial bearing clearance refers to the standard factory-set clearance between the rollers and raceways when the bearing is unmounted. This clearance is designed such that, once the bearing rings have been pressed onto the shaft and housing, and under normal operating temperatures, low-friction operation is maintained without any unacceptable stress.

What is the bearing’s tolerance class?

The bearing is manufactured to tolerance class P0, which corresponds to the ABEC 1 standard in the US. This standard tolerance defines permissible dimensional and concentricity tolerances for common industrial applications with standard requirements for mounting accuracy.

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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