Rod actuator
LINAK LA37 rod actuator
High-force TECHLINE rod actuator rated to 15,000 N with strokes of 100 to 600 mm and a top speed of 10 mm/s, built for harsh outdoor and off-highway duty.
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Key specifications
| Voltage (max) | 48 V |
|---|---|
| Ingress protection | IP66 dynamic / IP69K static |
| Data / bus | CANopen, CAN SAE J1939, IO-Link, LIN bus, Modbus RTU, EtherNet/IP, Modbus TCP/IP, PROFINET (IC integrated controller options); LINAK I/O |
| Force (max) | 15,000 N |
| Stroke (max) | 600 mm |
| Linear speed (max) | 10 mm/s |
| Supply | 12, 24 or 48 V DC |
Summarised in our own words from LINAK A/S's published data; series maxima, individual models vary. Last checked 2026-10-30. Source 1 · Source 2
Notes on this data
Duty cycle, temperature range and feedback options are in the datasheet; not transcribed here.
Specify Motion is not affiliated with LINAK A/S. LINAK and LA37 are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
LINAK LA37 replacement and alternative options
Use these supply-network options as a starting point for an engineering check. We can also help source the original LINAK part. Published series figures do not establish an exact-model or drop-in replacement: confirm ratings, fit, interfaces and approvals for your application.
Ball-screw servo electric cylinder in seven frame sizes from 32 to 150, with inline or reverse-parallel motor mounting and optional force sensing, aimed at hydraulic and pneumatic replacement.
| Published maximum | LA37 | SRB Linear Servo Actuator |
|---|---|---|
| Force | 15,000 N | 49,033 N meets or exceeds |
| Stroke | 600 mm | 1,000 mm meets or exceeds |
| Speed | 10 mm/s | 1,250 mm/s meets or exceeds |
General-purpose electric rod actuator in six sizes with solid, bronze or ball screws and inline or reverse-parallel motor mounting; a broad pneumatic/hydraulic replacement workhorse.
| Published maximum | LA37 | RSA-ST (standard thrust) |
|---|---|---|
| Force | 15,000 N | 17,917 N meets or exceeds |
| Stroke | 600 mm | 1,524 mm meets or exceeds |
| Speed | 10 mm/s | 3,124 mm/s meets or exceeds |
Heavy-duty version of the RSA rod actuator with roller-screw options, matched angular-contact bearings and larger motor mounts, reaching 58 kN on size 64.
| Published maximum | LA37 | RSA-HT (high thrust) |
|---|---|---|
| Force | 15,000 N | 58,000 N meets or exceeds |
| Stroke | 600 mm | 1,524 mm meets or exceeds |
| Speed | 10 mm/s | 3,124 mm/s meets or exceeds |
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 rod actuator is
A rod actuator, sometimes called an electric cylinder, converts motor rotation into linear thrust through a screw and nut inside a tube, pushing a rod in and out like a pneumatic or hydraulic cylinder. The screw is usually a ball screw for efficiency, a roller screw for heavy loads or a lead screw for low cost. The rod is guided by bearings in the tube and an anti-rotation feature, and the motor is mounted inline or folded alongside through a belt or gear stage.
When engineers choose a rod actuator
Choose a rod actuator when the load is guided externally and needs pushing or pulling with controlled force, speed and position, typically to replace a pneumatic or hydraulic cylinder. It brings programmable positions, force control and energy savings. The trade-offs are side load and cost: the rod is not meant to carry significant radial load, and peak force for its size is lower than hydraulics. If the load needs carrying and guiding along the stroke, a rodless actuator or stage is usually better.
How to specify the LINAK LA37
Send these with your enquiry and an engineer can confirm the right LA37 variant or an equivalent:
- Force: peak and continuous or RMS (N)
- Stroke (mm) and retracted length limits
- Speed and acceleration (mm/s, m/s²)
- Duty cycle or full motion profile
- Positioning repeatability (mm)
- Side load and mounting arrangement: trunnion, clevis or flange
- Motor and feedback preference, and environment (IP code, °C)
Common mistakes to avoid
- Sizing on peak force alone instead of RMS force over the cycle
- Rigidly mounting both ends so misalignment puts side load on the rod
- Ignoring critical speed and column buckling on long strokes
- Forgetting that a ball screw back-drives, so vertical loads need a brake
LINAK LA37: frequently asked questions
Can you help replace LINAK LA37 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 Motion Control Products options where appropriate. We confirm compatibility and any changes needed before recommending a replacement.
What is the LINAK LA37?
High-force TECHLINE rod actuator rated to 15,000 N with strokes of 100 to 600 mm and a top speed of 10 mm/s, built for harsh outdoor and off-highway duty. Published series figures include voltage 48 V, force 15,000 N, stroke 600 mm, linear speed 10 mm/s. It is made by LINAK A/S; Specify Motion can help source it or propose an equivalent.
Who makes the LINAK LA37?
The LINAK LA37 is made by LINAK (LINAK A/S) and is listed here for engineers comparing options. Specify Motion is not affiliated with LINAK A/S; brand names are used only to identify the product.
What is the voltage of the LINAK LA37?
The published series maximum voltage is 48 V. Individual models and sizes in the LA37 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 LINAK LA37?
We can assess suitable replacement options. On published figures, Motion Control Products SRB Linear Servo Actuator and Tolomatic RSA-ST (standard thrust) are options to assess from our supply network. An engineer confirms the fit against your application before recommending anything.
What is the difference between a rod actuator and a rodless actuator?
A rod actuator pushes and pulls a rod extending from its body, so it suits loads that are guided by the machine, much like a cylinder. A rodless actuator moves a carriage along the body and carries the load itself, which handles moment loads and long strokes within the actuator's own length. Pick rod for thrust and rodless for carrying.
Can an electric rod actuator replace a hydraulic cylinder?
Often, yes, especially where force needs are moderate and precise positioning, cleanliness or energy savings matter. Electric rod actuators with roller screws reach high forces, but extreme forces in a small envelope still favour hydraulics. Compare peak and continuous force, duty, shock loads and space, and check the motor and drive sizing as well as the screw.
Further reading: How to size a linear actuator · Hydraulic to electric actuator · Linear actuators
Other rod actuator series
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Tell us how you use the LINAK LA37: the load, speed, duty and environment. Our engineers will confirm whether it is still the right part, find it for you, or propose an alternative that fits better.
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