Tubular linear motor
FAULHABER LM linear DC-servomotors tubular linear motor
Compact tubular linear servomotors with a moving magnetic rod and integrated Hall or sin/cos sensing, for direct short-stroke linear motion.
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Key specifications
| Continuous force (max) | 9.2 N |
|---|---|
| Stroke (max) | 220 mm |
| Linear speed (max) | 3.4 m/s |
Summarised in our own words from Dr. Fritz Faulhaber GmbH & Co. KG's published data; series maxima, individual models vary. Last checked 2026-10-29. Source 1
Notes on this data
Series LM 0830, 1247, 1483, 2070 (11 = analog Hall, 12 = sin/cos). Continuous force 1.03-9.2 N; speed up to 3.4 m/s (LM 1483); stroke up to 220 mm (LM 2070). Peak force and voltage not on overview page.
Specify Motion is not affiliated with Dr. Fritz Faulhaber GmbH & Co. KG. FAULHABER and LM linear DC-servomotors are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
FAULHABER LM linear DC-servomotors replacement and alternative options
Use these supply-network options as a starting point for an engineering check. We can also help source the original FAULHABER part. Published series figures do not establish an exact-model or drop-in replacement: confirm ratings, fit, interfaces and approvals for your application.
Narrow, cost-effective iron-core linear motors with low cogging for long-stroke, space-constrained axes.
| Published maximum | LM linear DC-servomotors | AQM |
|---|---|---|
| Peak force | — | 1,243 N |
| Continuous force | 9.2 N | 506 N meets or exceeds |
| Speed | 3.4 m/s | 5 m/s meets or exceeds |
| Stroke | 220 mm | 100,000 mm meets or exceeds |
Linear motor and stage modules with the magnets in the moving forcer and a passive steel track, giving low EMI, low attraction and cheap long travel.
| Published maximum | LM linear DC-servomotors | MMF4 / MMD Magnet-free Track Linear Mo… |
|---|---|---|
| Peak force | — | 1,124 N |
| Continuous force | 9.2 N | 456 N meets or exceeds |
| Speed | 3.4 m/s | — |
| Stroke | 220 mm | 3,000 mm meets or exceeds |
Compact iron-core linear motors with high force density for point-to-point moves with micron-level positioning.
| Published maximum | LM linear DC-servomotors | AJM |
|---|---|---|
| Peak force | — | 1,409.1 N |
| Continuous force | 9.2 N | 446.8 N meets or exceeds |
| Speed | 3.4 m/s | 5 m/s meets or exceeds |
| Stroke | 220 mm | — |
Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
Typical applications
What a tubular linear motor is
A tubular linear motor has its permanent magnets stacked inside a stainless steel rod, with a cylindrical stator of coils around it. Current in the stator coils creates thrust along the rod, which can move while the stator stays fixed, or the reverse. The magnetic field is fully enclosed and symmetric, so there is no net attraction force on the guidance and very little stray field. Many designs include integrated position sensing and temperature monitoring, and look like a pneumatic cylinder.
When engineers choose a tubular linear motor
Choose a tubular linear motor as a programmable, direct-drive replacement for pneumatic cylinders, where many positions, controlled force, high speed or long life are needed. It suits pick-and-place, packaging, assembly and test. The trade-offs are cost and side load: many designs need external guidance for radial loads, and heat must be managed in a compact body. For very long strokes or very high forces, flat linear motors or screw actuators may be better.
How to specify the FAULHABER LM linear DC-servomotors
Send these with your enquiry and an engineer can confirm the right LM linear DC-servomotors variant or an equivalent:
- Peak and continuous force (N)
- Stroke (mm) and speed (m/s)
- Moving mass and acceleration (kg, m/s²)
- Side load and guidance arrangement
- Vertical load and need for gravity compensation
- Supply voltage and drive (V)
- Environment, sealing and cooling
Common mistakes to avoid
- Applying side load directly to the rod without external guides
- Running vertical axes without a brake or spring compensation
- Overlooking heat in high duty cycles
- Choosing a tubular motor where a cheaper pneumatic cylinder is adequate
FAULHABER LM linear DC-servomotors: frequently asked questions
Can you help replace FAULHABER LM linear DC-servomotors 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 FAULHABER LM linear DC-servomotors?
Compact tubular linear servomotors with a moving magnetic rod and integrated Hall or sin/cos sensing, for direct short-stroke linear motion. Published series figures include continuous force 9.2 N, stroke 220 mm, linear speed 3.4 m/s. It is made by Dr. Fritz Faulhaber GmbH & Co. KG; Specify Motion can help source it or propose an equivalent.
Who makes the FAULHABER LM linear DC-servomotors?
The FAULHABER LM linear DC-servomotors is made by FAULHABER (Dr. Fritz Faulhaber GmbH & Co. KG) and is listed here for engineers comparing options. Specify Motion is not affiliated with Dr. Fritz Faulhaber GmbH & Co. KG; brand names are used only to identify the product.
What is the continuous force of the FAULHABER LM linear DC-servomotors?
The published series maximum continuous force is 9.2 N. Individual models and sizes in the LM linear DC-servomotors 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 FAULHABER LM linear DC-servomotors?
We can assess suitable replacement options. On published figures, Akribis Systems AQM and Motion Control Products MMF4 / MMD Magnet-free Track Linear Motor Modules are options to assess from our supply network. An engineer confirms the fit against your application before recommending anything.
How is a tubular linear motor different from a flat linear motor?
In a tubular motor, the magnets are inside a round rod and the coils surround it, so the field is enclosed and there is no net attraction. In a flat motor, magnets sit on a flat track, giving long strokes and high forces but often an attraction force. Tubular motors suit cylinder-style mechanisms; flat ones suit stages and gantries.
Can a tubular linear motor replace a pneumatic cylinder?
Yes, it is a common use. It offers programmable positions, force and speed control and long life without compressed air. It costs more upfront, so the case usually rests on flexibility, energy savings, cycle time or reduced maintenance. Check side loads and whether a guide is needed.
Further reading: How to select a linear motor · Linear actuators
Other tubular linear motor series
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