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Bearings
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Housings/housing Units
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Linear Technology
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FAG
Cylindrical Roller Bearings FAG NJ303 -E-XL-TVP2
- Technical data
- Inner diameter
- 17 mm
- Outer diameter
- 47 mm
- Width
- 14 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
- 0,123 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 25 | 1,77 € | 33,63 € |
| 35 | 3,55 € | 31,85 € |
Cylindrical Roller Bearings FAG NJ303 -E-XL-TVP2
The FAG NJ303 -E-XL-TVP2 cylindrical roller bearing (17x47x14 mm) withstands high radial loads and supports shafts axially in one direction.
The NJ303 -E-XL-TVP2 cylindrical roller bearing is a single-row radial roller bearing designed for industrial applications involving high radial loads. Thanks to the line contact between the rollers and raceways, this design offers a high load-carrying capacity whilst maintaining compact dimensions. As an open component without an integrated seal, the bearing arrangement is designed to be used with an external lubrication system within the unit. FAG manufactures this model in standard tolerance class P0 (ABEC 1) with standard radial clearance.
What is the NJ303 -E-XL-TVP2 cylindrical roller bearing suitable for?
This design is used in rigid shaft mountings subject to heavy transverse forces. As a support bearing, it accommodates not only high radial forces but also axial guidance forces from one direction. In the opposite direction, the design allows for axial displacement, thereby compensating for thermal length changes in the shaft without constraint. The permissible temperature range is from –30 to +120 degrees Celsius.
What is the function of the NJ design and the polyamide cage?
The NJ design features two fixed flanges on the outer ring and one fixed flange on the inner ring. This allows the inner ring to be removed from one side for assembly, which facilitates separate pressing onto the shaft and housing. The integrated polyamide cage (TVP2) ensures quiet roller operation and reduces the weight of the rolling element set. When designing the assembly, ensure that the lubricant supply thoroughly bathes the open bearing seat.
What are the key features of the NJ303 -E-XL-TVP2 cylindrical roller bearing?
This single-row roller bearing is primarily designed to withstand very high radial loads. Thanks to its NJ design, featuring two flanges on the outer ring and one flange on the inner ring, it also serves as a support bearing. It withstands axial loads in one direction, whilst compensating for thermal expansion of the shaft in the opposite direction.
What are the dimensions of the NJ303 -E-XL-TVP2 cylindrical roller bearing?
The bearing has an internal diameter of 17 mm at the bore, an external diameter of 47 mm and a width of 14 mm. The outer ring is designed without a lubrication groove or lubrication hole, meaning that lubrication must be applied directly via the open bearing housing.
What does the suffix ‘TVP2’ mean for this bearing?
The abbreviation TVP2 refers to a solid polyamide window cage. This cage is characterised by low friction, low inertia and elastic running properties. It contributes to smooth running and is suitable for operating temperatures ranging from -30 to +120 degrees Celsius.
Why is the inner ring removable on the NJ design?
As the inner ring has a flange on only one side, it can be pulled off the rest of the roller set axially. This simplifies installation considerably, as the inner and outer rings can be fitted separately onto the shaft and the housing bore. You then slide the assemblies together without any play.
What are the bearing clearance and tolerance class?
The bearing is manufactured with standard radial clearance (CN), which is designed for standard fit selections and typical operating temperatures. The dimensional and concentricity tolerances comply with tolerance classes P0 and PN respectively, as specified by the relevant standards, which corresponds to the ABEC 1 classification in international terms.
How is the open cylindrical roller bearing lubricated?
As no integrated sealing washers are fitted, the bearing housing must be sealed by the surrounding machine casing. The bearing is either filled with grease or supplied via an existing gearbox oil circuit. The lubricant flows unimpeded directly to the raceways and the cylindrical rollers.
Schaeffler Technologies AG & Co. KG
Industriestraße 1-3, 91074 Herzogenaurach, Germany
info.de@schaeffler.com, https://www.schaeffler.de/de/meta/impressum/
10002751