Linear stage
SCHUNK LDN linear motor axis stage
Universal linear axis with an integrated linear motor, roller guidance and integrated measuring system; variants checked reach 2,700 mm stroke, 4 m/s, 40 m/s² and 500 N peak force with ±0.01 mm repeatability.
Key specifications
| Temperature | 5–40 °C |
|---|---|
| Peak force (max) | 500 N |
| Continuous force | 205 N |
| Stroke (max) | 2,700 mm |
| Linear speed (max) | 4,000 mm/s |
| Linear speed (max) | 4 m/s |
| Repeatability | 0.01 mm |
| Feedback | Incremental 1 Vpp or absolute (HIPERFACE, DRIVE-CLiQ); SIL2/PLd certified encoder systems |
| Payload (max) | 25 kg |
| Options | Pneumatic holding brake, supported version, H1G food-grade lubrication |
Summarised in our own words from SCHUNK SE & Co. KG's published data; series maxima, individual models vary. Last checked 2026-10-30. Source 1 · Source 2 · Source 3
Notes on this data
Figures are from the LDN-UL-0200 and LDN-US-0100 variant pages; other variants may differ. Classified as a stage (direct-drive linear axis).
Specify Motion is not affiliated with SCHUNK SE & Co. KG. SCHUNK and LDN linear motor axis are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Typical applications
Alternatives that meet or exceed these figures
Engineers often come to us with a SCHUNK part number and leave with an alternative that is easier to source, quicker to deliver or a better fit for the machine. These 3 series from our supply network are the closest match on published figures.
Wide steel-cord urethane belt version of the B3 rodless actuator for long, fast strokes up to 14.6 m and 5 m/s with integral bearing guidance.
| Published maximum | LDN linear motor axis | B3W Belt-Drive Rodless |
|---|---|---|
| Force | 500 N | 1,446 N meets or exceeds |
| Stroke | 2,700 mm | 14,579 mm meets or exceeds |
| Speed | 4,000 mm/s | 5,080 mm/s meets or exceeds |
Belt-driven rodless actuator in six sizes for long, fast strokes, offered unguided (U), with self-cleaning solid bearings for dusty sites (S), or on profiled rail for heavy loads (P).
| Published maximum | LDN linear motor axis | MXB Belt-Drive Rodless (MXB-U / MXB-S … |
|---|---|---|
| Force | 500 N | 1,859 N meets or exceeds |
| Stroke | 2,700 mm | 10,516 mm meets or exceeds |
| Speed | 4,000 mm/s | 5,080 mm/s meets or exceeds |
Screw-driven rodless stage on twin profile rails with a wide, flat carrier, built for heavy, high-moment loads in machine tools, gantries and XYZ systems.
| Published maximum | LDN linear motor axis | TRS Twin Profile Rail Stage |
|---|---|---|
| Force | 500 N | 12,590 N meets or exceeds |
| Stroke | 2,700 mm | 2,200 mm |
| Speed | 4,000 mm/s | 1,270 mm/s |
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.
What a linear stage is
A linear stage is a precision positioning axis in which a carriage or table moves along precision guides, driven by a ball screw, lead screw, belt or linear motor. Compared with a general rodless actuator, a stage emphasises straightness, flatness, accuracy and repeatability, with careful control of pitch, yaw and roll. Stages commonly integrate limit sensors, home sensors and linear or rotary encoders, and they can be stacked into XY, XYZ or gantry systems.
When engineers choose a linear stage
Choose a linear stage when the application depends on positioning accuracy and smooth guided motion, such as inspection, metrology, laser processing, semiconductor and laboratory automation. The trade-offs are cost and payload: precision guides and feedback add cost, and stage precision depends on mounting surface flatness. For general automation where a tenth of a millimetre is enough, a standard rodless actuator is usually more economical.
How to specify the SCHUNK LDN linear motor axis
Send these with your enquiry and an engineer can confirm the right LDN linear motor axis variant or an equivalent:
- Travel (mm)
- Accuracy, repeatability and resolution (µm)
- Straightness and flatness of travel (µm)
- Payload and moment loads (kg, Nm)
- Speed and settling time (mm/s, ms)
- Drive type: screw, belt or linear motor
- Encoder type, mounting surface and environment (cleanroom, vacuum)
Common mistakes to avoid
- Mounting a precision stage on a surface that is less flat than the stage
- Confusing repeatability with accuracy
- Ignoring thermal effects from the motor in precision work
- Stacking axes without considering the combined error
SCHUNK LDN linear motor axis: frequently asked questions
What is the SCHUNK LDN linear motor axis?
Universal linear axis with an integrated linear motor, roller guidance and integrated measuring system; variants checked reach 2,700 mm stroke, 4 m/s, 40 m/s² and 500 N peak force with ±0.01 mm repeatability. Published series figures include temperature 5 °C, temperature 40 °C, peak force 500 N, continuous force 205 N. It is made by SCHUNK SE & Co. KG; Specify Motion can help source it or propose an equivalent.
Who makes the SCHUNK LDN linear motor axis?
The SCHUNK LDN linear motor axis is made by SCHUNK (SCHUNK SE & Co. KG) and is listed here for engineers comparing options. Specify Motion is not affiliated with SCHUNK SE & Co. KG; brand names are used only to identify the product.
What is the temperature of the SCHUNK LDN linear motor axis?
The published series minimum temperature is 5 °C. Individual models and sizes in the LDN linear motor axis 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 SCHUNK LDN linear motor axis?
Yes. On published figures, Tolomatic B3W Belt-Drive Rodless and Tolomatic MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P) are the closest match from our supply network. An engineer confirms the fit against your application before recommending anything.
What is the difference between accuracy and repeatability on a linear stage?
Repeatability is how closely the stage returns to the same position, while accuracy is how close it moves to the commanded position. A stage can be very repeatable but not accurate if the screw has lead error. Accuracy can be improved with linear encoders or error mapping.
When should a linear stage use a linear motor instead of a screw?
Linear motors suit high speed, high acceleration and smooth motion with no backlash or wear, especially on long strokes. Screw-driven stages suit higher static force, vertical axes and lower cost. Linear motor stages need a linear encoder and careful thermal design, so they are typically more expensive.
Further reading: How to select a linear stage · How to select a linear motor · Linear actuators
Other linear stage series
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