Designation Structure
The order designation for AXRY bearings with angle measuring systems consists of the base bearing model plus measuring system suffix:
AXRY 260 -
NGX -
MA -
SBI -
PRR50 -
AC -
JXXXX -
L120
Series Bore Generation Measuring System Lubrication Port Accuracy Alignment Custom Lubrication
Basic Designation
| Component | Description | Options |
| Construction series | Axial/radial roller bearing series | AXRY |
| Bore in mm | Bearing bore diameter | 150, 180, 200, 260, 325, 395, 460, 580, 650 |
| Bearing type | Bearing generation | NGX, NGS, EX |
Measuring System Suffix
Core Suffix: Measuring System Type
The measuring system suffix is the key identifier for MI/MA bearings and must appear after the bearing generation (NGX/NGS/EX).
Measuring System
| Suffix | Description |
| -MI | Incremental angle measuring system |
| -MA | Absolute angle measuring system |
MI vs MA System Comparison
| Feature | MI (Incremental) | MA (Absolute) |
| Encoding Method | Incremental counting + distance coded reference | Absolute position encoding |
| Power-up Position | Requires reference travel (<30°) | Immediately known |
| Measuring Ring Height | 10 mm | 14 mm |
| Maximum Accuracy | ±2 μm arc length | ±1 μm arc length |
| Measuring Head Size | Miniature (external electronics) | Modular |
Other Suffix Descriptions
The following suffixes are the same as base NGX/NGS bearings and can be combined with the measuring system suffix:
Lubrication Connection
| Suffix | Description |
| (No suffix) | Only on outer ring (standard configuration for inner ring rotation) |
| -SBI | Additionally on inner ring (outer ring rotation configuration) |
Accuracy Requirements
| Suffix | Description |
| (No suffix) | Standard accuracy |
| -PRR50 | Axial and radial runout tolerances restricted |
| -PRR30 | Axial and radial runout tolerances high precision |
Bearing Alignment
| Suffix | Description |
| (No suffix) | Standard alignment |
| -AC | Customized alignment (for support ring installation) |
Regulation (Custom Specification)
| Suffix | Description |
| (No suffix) | Standard specification |
| -JXXXX | Customized regulation (number is issued by myonic) |
Lubrication
| Suffix | Description |
| (No suffix) | Standard grease |
| -L120 | Bearing ungreased, only preserved (for oil lubrication systems) |
Size Availability
| Measuring System | Applicable Bearing Series | Available Bore Range [mm] |
| MI (Incremental) | AXRY-NGX, AXRY-EX | 180 - 650 |
| MA (Absolute) | AXRY-NGX, AXRY-NGS, AXRY-EX | 150 - 650 |
Height Note
Due to measuring ring height (MI: 10mm, MA: 14mm), bearings with measuring systems have increased overall height. See individual product data sheets for detailed dimensions.
Order Examples
| Complete Model | Description |
| AXRY 260-NGX-MI | Bore 260mm, NGX bearing, incremental angle measuring system |
| AXRY 325-NGX-MA | Bore 325mm, NGX bearing, absolute angle measuring system |
| AXRY 460-NGS-MA | Bore 460mm, NGS high-speed bearing, absolute angle measuring system |
| AXRY 260-NGX-MI-SBI | Bore 260mm, incremental measuring, outer ring rotation configuration |
| AXRY 395-NGX-MA-PRR50 | Bore 395mm, absolute measuring, restricted axial and radial runout tolerances |
| AXRY 580-NGX-MA-SBI-PRR50-AC | Bore 580mm, absolute measuring, outer ring rotation, restricted accuracy, customized alignment |
| AXRY 650-NGX-MI-L120 | Bore 650mm, incremental measuring, ungreased (oil lubrication system) |
Scope of Delivery
myonic Supply Scope
- Bearing with installed measuring ring
- Threads on outer ring for measuring head mounting
- Can be mounted axially or radially (2 positions each)
Measuring Head Procurement
Measuring heads should be purchased directly from Heidenhain (AMO). myonic works closely with AMO and can assist with quick connection.
Ordering Notes
Please Provide When Ordering
- Complete product model (including measuring system suffix and all other suffixes)
- Measuring head mounting method (axial/radial)
- Single or multi-head system requirements
- Required quantity and expected delivery date
Technical Document Downloads