Iron-core linear motor
Akribis Systems AJM iron-core linear motor
Compact iron-core linear motors with high force density for point-to-point moves with micron-level positioning.
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Need Akribis Systems parts, a replacement or another suitable option? Send your part number or describe what the machine needs to do. We connect your requirement with experienced UK engineering and procurement support to help you get the right products, pricing and supply options. Your matched provider can take the enquiry through quotation and ordering to delivery and after-sales support.
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Configure Akribis Systems AJM
Select the products and performance you need. Our UK engineering team can use your specification to help source the right components, pricing and supply options. See your summary before adding contact details.
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- 1Products
- 2Performance
- 3Environment
- 4Volumes
- 5Your spec
What are you specifying?
Select everything you need. A motor, drive and gearbox can be specified together as one axis.
Key specifications
| Peak force (max) | 1,409.1 N |
|---|---|
| Continuous force (max) | 446.8 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.
Engineer support
Speak to our engineers about your project
Our experienced engineers are on hand, ready to help with your project. Whether you need the Akribis Systems AJM itself, help sourcing it, or a modified or custom design built around your load, speed and space, tell us what the machine has to do and we'll come back with the right option.
- Help sourcing AJM and spares for installed machines
- Modified and custom designs when a catalogue part doesn't fit
- Complete axis: motor, drive, gearing and feedback matched together
Akribis Systems AJM model codes
Published model codes in the AJM 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) | Pricing / replacement |
|---|---|---|---|
| AJM30-B1 | 44 | 117 | Quote or replacement for AJM30-B1 → |
| AJM30-B2 | 68.1 | 214.7 | Quote or replacement for AJM30-B2 → |
| AJM30-B4 | 136.2 | 429.4 | Quote or replacement for AJM30-B4 → |
| AJM50-B1 | 76 | 201 | Quote or replacement for AJM50-B1 → |
| AJM50-B2 | 117 | 369 | Quote or replacement for AJM50-B2 → |
| AJM50-B4 | 234 | 738.1 | Quote or replacement for AJM50-B4 → |
| AJM80-B1 | 113 | 300 | Quote or replacement for AJM80-B1 → |
| AJM80-B2 | 174.5 | 550.2 | Quote or replacement for AJM80-B2 → |
| AJM80-B4 | 348.9 | 1100.4 | Quote or replacement for AJM80-B4 → |
| AJM100-B1 | 145 | 384 | Quote or replacement for AJM100-B1 → |
| AJM100-B2 | 223.4 | 704.5 | Quote or replacement for AJM100-B2 → |
| AJM100-B4 | 446.8 | 1409.1 | Quote or replacement for AJM100-B4 → |
Options
- Coil lengths 56/96/176 mm
- Track lengths 80/200/400 mm
- 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 AJM
Send these with your enquiry and an engineer can confirm the right AJM 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 AJM: frequently asked questions
Can you help replace Akribis Systems AJM or source the original?
Send the full model code, quantity and required date. Our engineers can check original-part availability and assess suitable alternatives, including supply-network options where appropriate. We confirm compatibility and any changes needed before recommending a replacement.
What is the Akribis Systems AJM?
Compact iron-core linear motors with high force density for point-to-point moves with micron-level positioning. Published series figures include peak force 1,409.1 N, continuous force 446.8 N, linear speed 5 m/s. It is available through our supply network, and our engineers can confirm the right variant for your application.
What model codes are in the Akribis Systems AJM range?
The AJM range includes AJM30-B1, AJM30-B2, AJM30-B4, AJM50-B1, AJM50-B2, AJM50-B4, AJM80-B1, AJM80-B2 and 4 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.
Who makes the Akribis Systems AJM?
The Akribis Systems AJM is made by Akribis Systems available through our supply network. Send us your requirement for pricing, lead time, datasheets and CAD.
What is the peak force of the Akribis Systems AJM?
The published series maximum peak force is 1,409.1 N. Individual models and sizes in the AJM 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.
Is there an alternative to the Akribis Systems AJM?
We can assess suitable replacement options. Our engineers can review the original model and propose options for your load, speed and environment. An engineer confirms the fit against your application before recommending anything.
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
Engineer support
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