Iron-core linear motor
Akribis Systems AKM iron-core linear motor
High-force iron-core linear motors in five widths with optional water cooling, reaching several kN continuous.
Key specifications
| Peak force (max) | 12,884.3 N |
|---|---|
| Continuous force (max) | 6,190.1 N |
| Linear speed (max) | 5 m/s |
| Voltage | 600 VDC bus max |
Series ranges as published; individual models vary. The full datasheet, drawings and CAD models are available on request.
Akribis Systems AKM model codes
Published model codes in the AKM 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) |
|---|---|---|
| AKM30-B1 | 108.4 | 241.6 |
| AKM30-B2 | 216.8 | 483.2 |
| AKM30-B3 | 325.2 | 724.7 |
| AKM30-B4 | 433.6 | 966.3 |
| AKM50-B1 | 180.7 | 402.6 |
| AKM50-B2 | 361.3 | 805.3 |
| AKM50-W-B2 | 579.6 | 805.3 |
| AKM50-B3 | 542 | 1207.9 |
| AKM50-B4 | 722.6 | 1610.5 |
| AKM50-W-B4 | 1159.3 | 1610.3 |
| AKM50-B6 | 1029.8 | 2415.8 |
| AKM100-B1 | 361.3 | 805.3 |
| AKM100-B2 | 722.6 | 1610.5 |
| AKM100-W-B2 | 1159.3 | 1610.3 |
| AKM100-B3 | 1084 | 2416 |
| AKM100-B4 | 1445.3 | 3221.1 |
| AKM100-W-B4 | 1947.3 | 3221.1 |
| AKM100-B6 | 2059.6 | 4348.5 |
| AKM150-B4 | 2027 | 4831.6 |
| AKM150-W-B4 | 2738.4 | 4831.6 |
| AKM150-B8 | 3839.1 | 9663.2 |
| AKM150-W-B8 | 5216.1 | 9963.2 |
| AKM200-B4 | 2539.6 | 6442.2 |
| AKM200-W-B4 | 3249.8 | 6442.2 |
| AKM200-B8 | 4817.7 | 12884.3 |
| AKM200-W-B8 | 6190.1 | 12884.3 |
Options
- Water cooling (W variants)
- Multiple coil lengths
- Integrated Hall and temperature sensors
Typical applications
What an iron-core linear motor is
An iron-core linear motor is a direct-drive linear motor whose coils are wound on a laminated iron core in the moving forcer, running over a flat track of permanent magnets. Current in the coils interacts with the magnet field to produce thrust directly, with no screw, belt or gearbox. The iron core concentrates the magnetic flux, so force density is high and heat can be conducted away through the core. Position feedback comes from a linear encoder.
When engineers choose an iron-core linear motor
Choose an iron-core linear motor for high continuous force, high acceleration and long strokes, such as machine tools, gantries and heavy automation. Direct drive removes backlash and wear in the transmission. The trade-offs are cogging, which causes small force ripple, and a strong attraction force between forcer and magnet track, often many times the rated thrust, which must be carried by the guides. For very smooth, low-ripple motion with light loads, an ironless motor may suit better.
How to specify the Akribis Systems AKM
Send these with your enquiry and an engineer can confirm the right AKM variant:
- Peak and continuous force (N)
- Stroke and speed (mm, m/s)
- Moving mass and acceleration (kg, m/s²)
- Attraction force and guide load capacity (N)
- Cooling: natural, forced air or water
- Bus voltage and drive current (V, A)
- Linear encoder type and resolution
Common mistakes to avoid
- Sizing guides without including the magnetic attraction force
- Ignoring cogging in smooth-scan or low-speed applications
- Leaving out heat dissipation into the machine structure
- Allowing ferrous debris to collect on the open magnet track
Akribis Systems AKM: frequently asked questions
What is the Akribis Systems AKM?
High-force iron-core linear motors in five widths with optional water cooling, reaching several kN continuous. Published series figures include peak force 12,884.3 N, continuous force 6,190.1 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 AKM?
The Akribis Systems AKM 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 AKM range?
The AKM range includes AKM30-B1, AKM30-B2, AKM30-B3, AKM30-B4, AKM50-B1, AKM50-B2, AKM50-W-B2, AKM50-B3 and 18 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 AKM?
The published series maximum peak force is 12,884.3 N. Individual models and sizes in the AKM 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.
What is the difference between iron-core and ironless linear motors?
Iron-core motors wind coils on an iron core, giving higher force and better heat removal, but with cogging and a strong magnetic attraction to the track. Ironless motors have coils without iron running between two rows of magnets, so there is no cogging or attraction, giving very smooth motion with lower force and less heat capacity.
Why does an iron-core linear motor need strong guides?
The iron core is strongly attracted to the magnet track, typically with a force several times the rated thrust. That load acts on the guide bearings all the time, even at rest. Guides must be sized for payload, process forces and this attraction, or bearing life will be much shorter than expected.
Further reading: How to select a linear motor · Linear actuators
Often compared with
Engineers specifying this series often compare it with:
Other iron-core linear motor series
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