Ironless linear motor
Akribis Systems AUM ironless linear motor
U-channel ironless linear motors with zero cogging, six sizes from 3 N to nearly 2 kN continuous, for fast settling precision stages.
Key specifications
| Peak force (max) | 16,200 N |
|---|---|
| Continuous force (max) | 1,980 N |
| Linear speed (max) | 5 m/s |
| Voltage | 60 VDC (AUM1); 330 VDC std; 600 VDC NTRL (AUM4-6) |
Series ranges as published; individual models vary. The full datasheet, drawings and CAD models are available on request.
Akribis Systems AUM model codes
Published model codes in the AUM range, with key figures from the manufacturer's data. Search this page for your part number, or send it to us for availability, pricing and lead time.
| Model code | Continuous force (N) | Peak force (N) |
|---|---|---|
| AUM1-S1 | 3 | 11.9 |
| AUM1-S2 | 6 | 23.8 |
| AUM1-S3 | 8.9 | 35.7 |
| AUM1-S4 | 11.9 | 47.6 |
| AUM1-S5 | 14.9 | 59.5 |
| AUM2-S1 | 8.8 | 44 |
| AUM2-S2 | 17.6 | 88 |
| AUM2-S3 | 26.4 | 132 |
| AUM2-S4 | 35.2 | 176 |
| AUM2-S6 | 52.8 | 264 |
| AUM2-S8 | 70.4 | 352 |
| AUM3-S1 | 28 | 144 |
| AUM3-S2 | 57 | 289 |
| AUM3-S3 | 85 | 433 |
| AUM3-S4 | 113 | 578 |
| AUM3-S5 | 141 | 722 |
| AUM3-S6 | 170 | 867 |
| AUM4-S1 | 55 | 312 |
| AUM4-S2 | 110 | 624 |
| AUM4-S3 | 166 | 936 |
| AUM4-S4 | 221 | 1248 |
| AUM4-S5 | 276 | 1560 |
| AUM4-S6 | 331 | 1872 |
| AUM4-S8 | 442 | 2496 |
| AUM5-S1 | 98 | 707 |
| AUM5-S2 | 197 | 1415 |
| AUM5-S3 | 295 | 2112 |
| AUM5-S4 | 393 | 2830 |
| AUM5-S5 | 491 | 3537 |
| AUM5-S6 | 590 | 4244 |
| AUM5-S8-V107 | 786 | 5659 |
| AUM5-S9-V80 | 884 | 6369 |
| AUM5-S10-V107 | 983 | 7078 |
| AUM5-S12-V107 | 1179 | 8489 |
| AUM6-P5-S4 | 660 | 5400 |
| AUM6-P8-S6 | 990 | 8100 |
| AUM6-P5-S8 | 1320 | 10800 |
| AUM6-P8-S9 | 1485 | 12150 |
| AUM6-P7-S10 | 1650 | 13500 |
| AUM6-P8-S12 | 1980 | 16200 |
Options
- With or without Hall sensor
- Series/parallel winding
- Multiple coil and track lengths
- Temperature sensor
Typical applications
What an ironless linear motor is
An ironless linear motor, also called a coreless or U-channel linear motor, has a coil assembly with no iron, typically encapsulated in epoxy, moving inside a U-shaped channel lined with magnets on both sides. With no iron in the moving part, there is no cogging and no magnetic attraction between forcer and track. The forcer is light, so acceleration can be very high. Like other linear motors, it drives the load directly and relies on a linear encoder and external guides.
When engineers choose an ironless linear motor
Choose an ironless linear motor for very smooth motion, constant velocity and fast settling with light to moderate loads, such as scanning, metrology, semiconductor and inspection. The trade-offs are force density and heat: without an iron core, continuous force per size is lower and the coil has less thermal mass. The U-channel track is also bulkier and more expensive per metre. For heavy loads or high continuous force, an iron-core design is usually more economical.
How to specify the Akribis Systems AUM
Send these with your enquiry and an engineer can confirm the right AUM variant:
- Peak and continuous force (N)
- Moving mass and payload (kg)
- Velocity ripple or smoothness requirement
- Stroke and speed (mm, m/s)
- Settling time and positioning accuracy (ms, µm)
- Thermal limits and cooling
- Encoder type and resolution
Common mistakes to avoid
- Using peak force for continuous duty and overheating the coil
- Ignoring cable management on a moving coil
- Assuming guides can be lighter without considering stiffness
- Choosing ironless where an iron-core motor would provide more force for less cost
Akribis Systems AUM: frequently asked questions
What is the Akribis Systems AUM?
U-channel ironless linear motors with zero cogging, six sizes from 3 N to nearly 2 kN continuous, for fast settling precision stages. Published series figures include peak force 16,200 N, continuous force 1,980 N, linear speed 5 m/s. It is available through our supply network, and our engineers can confirm the right variant for your application.
Who makes the Akribis Systems AUM?
The Akribis Systems AUM is made by Akribis Systems available through our supply network. Send us your requirement for pricing, lead time, datasheets and CAD.
What model codes are in the Akribis Systems AUM range?
The AUM range includes AUM1-S1, AUM1-S2, AUM1-S3, AUM1-S4, AUM1-S5, AUM2-S1, AUM2-S2, AUM2-S3 and 32 more. The table on this page lists each published model code with its key figures. Send us the code you use, or the one you need to replace, and our engineers will confirm availability, lead time or the closest equivalent.
What is the peak force of the Akribis Systems AUM?
The published series maximum peak force is 16,200 N. Individual models and sizes in the AUM range vary, so check the exact variant against your duty cycle, mounting and environment, or ask our engineers to confirm the right size for you.
Why do ironless linear motors have no cogging?
Cogging comes from iron being attracted to individual magnets as it passes over them. An ironless forcer has no iron in the moving part, so there is nothing to be pulled towards the magnets and the force is smooth. This gives very low velocity ripple, which suits scanning and precise constant-speed motion.
Are ironless linear motors less powerful?
For a given size, ironless motors typically produce less continuous force than iron-core motors and have less thermal mass to absorb heat. Their light forcers allow very high acceleration, so the moving system can still be very dynamic. For heavy loads, iron-core motors are often more economical.
Further reading: How to select a linear motor · Linear actuators
Often compared with
Engineers specifying this series often compare it with:
Other ironless linear motor series
Spec builder
Configure Akribis Systems AUM
Select every part you need, answer the questions an applications engineer would ask, and see your summary before we ask for any details.
- 1Products
- 2Performance
- 3Environment
- 4Volumes
- 5Your spec
Engineer support
Need Akribis Systems AUM or a complete system around it?
Tell us what you need, whether it is this part, an equivalent or a complete axis built around it. An engineer will review your requirements and reply, normally within one working day.
- Reviewed by an engineer, not an autoresponder
- Like-for-like and better-fit alternatives
- Standard, modified and custom options
Prefer to configure it? Use the spec builder.