Heavy Duty Linear Actuator Application Planning Guide
This guide is for planning heavy linear-motion systems. It compares verified specifications for HH-LA-U11, HH-LA-U3 and HH-LA-U6, but it does not certify that a model is suitable for a specific machine or environment.
Verified Technical Comparison
| Model | Push / Pull | Max Self-Locking Load | No-Load / Load Speed | Standard Stroke | Installation Length | IP |
|---|---|---|---|---|---|---|
| HH-LA-U11 | 3500N / 3500N | 5000N | 3.5 / 2.2 mm/s | 50–450 mm | Stroke + 120 mm | IP65 |
| HH-LA-U3 | 6000N / 4000N | 8000N | 5 / 3.5 mm/s | 2–18 in | Stroke + 175 mm | IP54 |
| HH-LA-U6 | 7000N / 7000N | 9000N | 9 / 7 mm/s | 200–600 mm | Stroke + 250 mm | IP65 |
1. Calculate Required Force
Determine push and pull force from the actual mechanism geometry, motion direction, friction and an appropriate engineering margin. A higher force rating is not automatically a better fit.
2. Confirm Stroke and Installation Length
Derive required travel from the mechanism and verify the actuator fits in both retracted and extended positions.
3. Check Duty Cycle
HH-LA-U11, HH-LA-U3 and HH-LA-U6 each have a verified duty-cycle rating of 10–20%. Do not treat them as continuous-duty actuators without confirming the operating cycle and engineering requirements.
4. Check Temperature and Environment
| Model | Operating Temperature | IP Rating |
|---|---|---|
| HH-LA-U11 | -20°C to 60°C | IP65 |
| HH-LA-U3 | -20°C to 60°C | IP54 |
| HH-LA-U6 | -40°C to 65°C | IP65 |
IP54 and IP65 are ingress-protection classifications, not blanket waterproof or harsh-environment guarantees. Evaluate exposure, electrical connections, mounting orientation and enclosure requirements for the actual installation.
5. Compare Loaded Speed
For working motion, compare load speed as well as force. The verified load-speed ratings are 2.2 mm/s for HH-LA-U11, 3.5 mm/s for HH-LA-U3 and 7 mm/s for HH-LA-U6.
6. Verify Electrical and Control Requirements
All three are available in 12V and 24V DC versions. HH-LA-U11 and HH-LA-U3 have built-in limit switches. HH-LA-U6 has a limit switch and verified signal output, plus built-in clutch overload protection. Do not infer Hall feedback, synchronization or controller compatibility unless explicitly verified for the complete system.
Read the 3500N vs 6000N vs 7000N Comparison →
Read the Linear Actuator Selection Guide →
Contact HyHaven for Product Selection Support →
Frequently Asked Questions
Which heavy duty actuator has the highest verified force rating?
Among these three models, HH-LA-U6 has the highest verified force rating at 7000N push and 7000N pull. Force alone does not determine system suitability.
Can these actuators run continuously?
The verified duty-cycle rating for HH-LA-U11, HH-LA-U3 and HH-LA-U6 is 10–20%, so they should not be treated as continuous-duty actuators without engineering review.
Does IP65 mean waterproof?
Do not infer a blanket waterproof or application-suitability guarantee from the IP rating alone. Evaluate the complete installation environment.