AXRY-EX bearings are double-direction, screw-on precision bearing units, ready for installation and intended for highly-rigid applications such as rotary tables or milling heads.
The bearing absorbs axial and radial forces as well as tilting moments backlash-free. AXRY-EX bearings are suitable for lifetime grease lubrication and are designed for maximum rigidity.
The friction torques of the bearing have been optimised, so that the starting torque and the running torque are almost identical.
In this way, myonic AXRY-EX bearings fulfil all the requirements for modern, highly-dynamic and direct-driven machine axes.
Key Features
High-Rigidity Design
Backlash-free, double-direction absorption of axial forces, radial forces and tilting moments, designed for maximum rigidity
Lifetime Grease Lubrication
Suitable for lifetime grease lubrication, simplifying maintenance requirements
Optimised Torque Characteristics
Starting torque and running torque are almost identical, suitable for highly-dynamic direct-drive applications
Ready for Installation
Complete screw-on bearing unit that simplifies the installation process
Accuracy and Designs
AXRY-EX bearings offer a complete range of accuracy and design options, including:
| Option Category | Description |
|---|---|
| Axial and radial runout limitation | The axial and radial runout can be limited as required |
| Height tolerances H1/H2 | H1 and H2 height tolerance classes are available |
| Supported L-section ring AC | Can be supplied with a supported L-section ring (AC design) |
All of the above designs are available without limitations and can be selected according to application requirements.
Measuring System
AXRY-EX bearings can be equipped with inductive angle measurement systems. These are available in incremental and absolute designs, including single-head and multi-head systems in a wide range of accuracies.
Mounting the measuring system directly onto the bearing exploits the high precision of the bearing rings, minimising the concentricity error of the reading head relative to the shaft (table) and thereby achieving maximum angle measurement accuracy.
- Incremental: outputs pulse signals of relative angular displacement
- Absolute: outputs the absolute angular position, with no loss of position information after power-off
- Both are available as single-head or multi-head systems in a range of accuracy classes
For further details, see the measuring systems chapter.
Typical Applications
- Rotary tables - milling rotary tables of machining centres
- Milling heads - five-axis machining centres
- Direct-driven machine axes - highly-dynamic direct-drive rotary axes