AXRY-NGS bearings are double-direction, screw-on precision bearing units, ready for installation and intended for highly rigid and at the same time high-speed applications, for example mill-turn tables or vertical lathes.
These bearings absorb axial forces, radial forces, and tilting moments without backlash.
AXRY-NGS bearings offer the best speed, rigidity, and service life within a limited space envelope. To reach limiting speeds and long duty cycles, oil-circulation cooling on both the inner and outer rings is recommended. The bearings are supplied as standard with grease pre-lubrication. Oil lubrication, oil channels, and oil-air minimum-quantity lubrication are available on request.
Attention!
The three essential criteria for the correct operation of a high-speed spindle:
- Cooling
- Lubrication
- Temperature monitoring
Generation AXRY-NGS
The myonic NGS generation bearings have been continuously optimized and further developed from the AXRY-ES series, incorporating numerous improved features:
- Increased rigidity values
- Increased load ratings
- Extended service life
- Higher limiting speeds with long duty cycles
- Axial and radial lubrication through the outer ring
- Optional: radial lubrication through the inner ring (-SBI)
- Particularly low-noise operation
- Reduced temperature rise
- Temperature sensor bore integrated in the outer ring
- Cooling channels can be designed directly on the inner ring
Of course, all variant options are also available for NGS bearings, including tighter radial and axial runout tolerances, tighter height tolerances H1/H2, and customer-specific bearing adjustment.
Generation AXRY-NGS-SBI
The NGS-SBI generation myonic bearings have the same functionality as the NGS series but are dimensioned for high-speed outer ring rotation and are the successor to the AXRY-OS series. The NGS-SBI is characterized by the following improved features:
- Increased rigidity values
- Increased load ratings
- Extended service life
- Higher limiting speeds with long duty cycles
- Radial lubrication through the inner ring
- Particularly low-noise operation
- Reduced temperature rise
- Temperature sensor bore integrated in the inner ring
For the AXRY-NGS-SBI series, all variant options are available, including tighter radial and axial runout tolerances, tighter height tolerances H1/H2, and customer-specific bearing adjustment.
Bearing Structure
The AXRY-NGS (NGS-SBI) bearing consists of three rings: an inner ring, an outer ring, and an axial washer. The inner ring bore is manufactured to a fit tolerance.
The axial washer is unsupported in the bore region, centered on the inner ring, and secured with fastening screws.
Fastening Screws
The fully assembled bearing is held together with fastening screws. The axial washer is aligned to the inner ring at the factory.
If the fastening screws have to be removed, they may only be replaced once the bearing has been fully tightened. If the fastening screws are removed beforehand, the axial washer must be realigned to avoid creating an imbalance in the system.
Important Note
When reinstalling after removing the fastening screws, the alignment of the axial washer to the inner ring must be ensured; otherwise, an imbalance in the system may result.
NGS vs NGS-SBI Comparison
The following comparison table is an editorial compilation, not official source text; the individual values can be derived from separate sections of the official website, which should be regarded as authoritative.
| Feature | AXRY-NGS | AXRY-NGS-SBI |
|---|---|---|
| Rotation type | Inner ring rotation (editorial inference) | Outer ring rotation |
| Lubrication method | Axial/radial lubrication through the outer ring | Radial lubrication through the inner ring |
| Temperature sensor bore | Outer ring | Inner ring |
| Predecessor series | AXRY-ES | AXRY-OS |
| Typical applications | Mill-turn tables, vertical lathes | — |
Next Steps
Learn more detailed technical information about AXRY-NGS bearings:
- Bearing Features - Accuracy requirements, lubrication methods, temperature monitoring
- Limiting Load Diagrams - Static limiting loads for each size series
- Adjacent Construction Design - Design principles and accuracy requirements