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Bearings
Bearings
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Housings/housing Units
Housings/housing Units
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Linear Technology
Linear Technology
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V-Belts
V-Belts
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Seals
Seals
FAG
Four Point Contact B. FAG QJ330 -N2-MPA
- Technical data
- Inner diameter
- 150 mm
- Outer diameter
- 320 mm
- Width
- 65 mm
- Seal
- None, open bearing
- Cage
- Brass cage
- Clearance
- Normal radial clearance
- Running accuracy
- Tolerance class P0/PN2 / ABEC 1
- Groove(s) on outer ring
- 2 retaining grooves on outer ring shifted by 180 degrees
- Design
- Split inner ring
- Temperature range
- -30 to +200 °C
- Weight
- 26,8 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 2 | 68,11 € | 1.294,09 € |
| 3 | 136,22 € | 1.225,98 € |
Four Point Contact B. FAG QJ330 -N2-MPA
The FAG QJ330 -N2-MPA four-point bearing is designed for shafts with a 150 mm bore and can accommodate high axial forces in both directions.
The QJ330 -N2-MPA four-point bearing features a split inner ring and two retaining grooves in the outer ring. With key dimensions of a 150 mm bore diameter, 320 mm outer diameter and 65 mm width, this unit is suitable for technical applications requiring precise axial guidance within a confined space. A guided brass cage ensures stable rolling element operation even under demanding operating conditions.
What is the QJ330 -N2-MPA four-point bearing suitable for?
This bearing is primarily used where alternating or bidirectional axial forces need to be accommodated. It frequently functions as a pure axial bearing alongside a separate radial bearing in bearing arrangements subject to combined loads. The split inner ring design allows a large number of balls to be accommodated within the bearing. The design is suitable for a wide temperature range from –30 to +200 degrees.
What are the advantages of a split inner ring and retaining grooves?
The split inner ring allows the outer ring and inner ring halves to be assembled separately, which significantly facilitates installation in complex housing designs. The two retaining grooves in the outer ring, offset by 180 degrees, provide a positive-lock anti-rotation mechanism within the surrounding housing by means of suitable retaining pins. The open bearing has standard radial clearance and complies with tolerance class P0/PN or ABEC 1.
What is the QJ330 -N2-MPA four-point bearing?
A single-row angular contact ball bearing with a split inner ring and a special raceway geometry, which accommodates axial forces in both directions. With a bore diameter of 150 mm, an outside diameter of 320 mm and a width of 65 mm, this FAG design offers a compact solution for highly loaded bearing arrangements.
What is the purpose of the retaining grooves in the outer ring?
Two grooves on the outer ring, offset by 180 degrees, accommodate retaining pins in the bearing housing. These prevent the outer ring from rotating unintentionally, particularly when the bearing is mounted as a pure thrust bearing with radial housing clearance. This simplifies the design of the bearing.
Why does this four-point bearing have a split inner ring?
The two-piece design of the inner ring allows a particularly large number of balls to be fitted. It also simplifies the assembly of the components, as the outer ring with the rolling element set and the two halves of the inner ring can be positioned on the shaft one after the other.
What is the operating temperature range of the QJ330 -N2-MPA?
The bearing is designed for operating temperatures ranging from -30 to +200 degrees. The integrated brass cage retains its dimensional stability within this temperature range and is suitable for demanding industrial environments with high heat generation, provided that the appropriate lubricant is selected for this open-type bearing.
Does the QJ330 -N2-MPA four-point bearing require external lubrication?
As an open version without integrated sealing washers, this model requires an external supply of lubricant – either oil or grease – as well as an application-specific housing seal. This protects the raceways from the ingress of contaminants and helps to maintain the necessary lubricating film in the contact area.
What is the tolerance class of the FAG bearing?
The bearing is manufactured to the standard tolerance P0/PN, which corresponds to ABEC Class 1. This standard accuracy class is suitable for common industrial applications and defines the standardised dimensional and running characteristics in accordance with established manufacturing specifications.
Schaeffler Technologies AG & Co. KG
Industriestraße 1-3, 91074 Herzogenaurach, Germany
info.de@schaeffler.com, https://www.schaeffler.de/de/meta/impressum/
10005542