Linear voice coil actuator
For powerful and fast strokes over short distances
A voice coil actuator consists of two components: A coil on a carrier and a cylinder with permanent magnets. The force and direction of the coil are directly dependent on the direction and strength of the current.
The low mass of the coil allows you to achieve maximum acceleration . The prerequisite for this is a correspondingly light load. The force required for acceleration can be over 1,100 N. As the voice coil actuator is a direct drive, there are no losses due to the spindle or gearbox.
Voice coil actuators are also available as a kit in round or rectangular form. They offer the possibility of precise installation and are therefore very cost-efficient.
If you are looking for a rotary movement instead of a linear one, rotary voice coil actuators are available. With these, however, you can only realize angular movements.
We are guaranteed to find the right actuator for you - free of charge & without obligation
Your advantages of a linear voice coil
No torque ripple, no backlash or hysteresis effect over the entire travel range.- Minimal moment of inertia enables maximum acceleration.
- The high repeatability and positioning accuracy is only dependent on the sensor or encoder.
Realized locations
Processing machines- Focusing
- Handling
- Vibration damper
Features
-
Travel from 0.25 to 56 mm - Nominal force from 0.38 to 289 N
- Peak force from 0.7 to 1.1 kN
- Frequency up to 120 Hz (400 Hz maximum)
- Diameter 12.5 to 260 mm (cylindrical)
Models of the voice coil LA series (LA05 to LA14)
| Key data | Unit | LA05-05 | LA08-10 | LA10-08 | LA10-12 | LA12-17 | LA13-11 | LA13-12 | LA14-17 |
|---|---|---|---|---|---|---|---|---|---|
| LA05-05-019A | LA08-10-000A | LA10-08-000A | LA10-12-027A | LA12-17-000A | LA13-11-000A | LA13-12-000A | LA14-17-000A | ||
| Peak force | (10s) N | 0.82 | 6.67 | 6.67 | 13.3 | 44.4 | 15.5 | 15.5 | 22.2 |
| Continuous force | N | 0.48 | 1.96 | 2.71 | 4.94 | 15.5 | 5.07 | 7.12 | 7.12 |
| Total stroke | mm | 0.51 | 4.06 | 5.08 | 9.14 | 7.62 | 6.36 | 6.36 | 10.10 |
| KA | N/√W | 0.44 | 0.97 | 1.14 | 1.76 | 4.38 | 2.36 | 2.36 | 2.18 |
| Outer-Ø | mm | 12.7 | 19.0 | 24.1 | 25.4 | 30.4 | 31.6 | 31.6 | 35.5 |
| Length plus ½ stroke | mm | 12.7 | 24.5 | 19.6 | 28.5 | 43.1 | 27.3 | 28.5 | 41.9 |
Models of the voice coil LA series (LA15 to LA17)
| Key data | Unit | LA15-16 | LA15-16 | LA15-16 | LA15-26 | LA16-16 | LA16-19 | LA17-28 |
|---|---|---|---|---|---|---|---|---|
| LA15-16-002A | LA15-16-020A | LA15-16-024A | LA15-26-000A | LA16-16-000A | LA16-19-001A | LA17-28-000A | ||
| Peak force | (10s) N | 62.6 | 33.8 | 88.9 | 44.4 | 89.0 | 22.2 | 71.1 |
| Continuous force | N | 19.6 | 11.6 | 24.4 | 11.5 | 24.4 | 9.30 | 28.4 |
| Total stroke | mm | 6.36 | 10.1 | 6.35 | 25.4 | 6.36 | 12.7 | 15.2 |
| KA | N/√W | 4.72 | 2.80 | 5.82 | 2.93 | 5.83 | 2.31 | 6.89 |
| Outer-Ø | mm | 38.1 | 38.1 | 38.1 | 37.5 | 40.0 | 40.0 | 58.4 |
| Length plus ½ stroke | mm | 39.6 | 39.6 | 39.6 | 65.4 | 39.6 | 47.6 | 66.0 |
Models of the voice coil LA series (LA18 to LA25)
| Key data | Unit | LA18-12 | LA18-12 | LA18-12 | LA19-40 | LA23-55 | LA24-20 | LA24-33 | LA25-42 |
|---|---|---|---|---|---|---|---|---|---|
| LA18-12-000A | LA18-12-002A | LA18-12-006Z | LA19-40-000A | LA23-55-000A | LA24-20-000A | LA24-33-000A | LA25-42-000A | ||
| Peak force | (10s) N | 44.5 | 27.0 | 44.4 | 22.2 | 89.0 | 111 | 35.6 | 266 |
| Continuous force | N | 15.1 | 7.79 | 15.1 | 8.54 | 27.1 | 26.3 | 13.8 | 86.3 |
| Total stroke | mm | 6.10 | 3.05 | 6.10 | 45.7 | 57.1 | 16.5 | 22.9 | 25.4 |
| KA | N/√W | 4.8 | 2.97 | 4.84 | 2.37 | 4.34 | 7.51 | 3.02 | 13.8 |
| Outer-Ø | mm | 44.4 | 44.4 | 44.4 | 47.6 | 57.1 | 60.3 | 59.7 | 63.5 |
| Length plus ½ stroke | mm | 28.4 | 28.4 | 28.4 | 101 | 139 | 50.8 | 82.5 | 106 |
Models of the voice coil LA series (from LA28)
| Key data | Unit | LA28-22 | LA28-22 | LA28-43 | LA30-43 | LA30-48 | LA30-75 | LA34-37 | LA43-67 | LA50-65 |
|---|---|---|---|---|---|---|---|---|---|---|
| LA28-22-000A | LA28-22-001A | LA28-43-000A | LA30-43-000A | LA30-48-000A | LA30-75-001A | LA34-37-000A | LA43-67-000A | LA50-65-000A | ||
| Peak force | (10s) N | 266 | 201 | 266 | 445 | 445 | 444 | 444 | 1.378 | 1.861 |
| Continuous force | N | 87.7 | 45.7 | 75.6 | 185 | 133 | 96.2 | 127 | 282 | 500 |
| Total stroke | mm | 11.4 | 11.4 | 25.0 | 25.4 | 25.4 | 50.8 | 19.0 | 31.7 | 25.4 |
| KA | N/√W | 13.8 | 10.4 | 13.0 | 21.8 | 21.8 | 16.6 | 20.2 | 28.0 | 57.8 |
| Outer-Ø | mm | 69.8 | 69.8 | 70.0 | 76.2 | 76.2 | 76.2 | 85.8 | 108 | 127.0 |
| Length plus ½ stroke | mm | 55.8 | 55.9 | 109.0 | 112.0 | 120.0 | 188.0 | 95.2 | 169.0 | 163.0 |
Options
Temperature sensor- Drilling pattern
FAQ about Voic Coil Actuator
- What do I need to operate the voice coil?
- A simple 2-phase servo drive is sufficient. Some 3-phase servo controllers have the option of deactivating a phase. A sensor is also required to close the position control loop.
- Does the coil move in the pot?
- Yes, and this requires a linear guide so that the coil does not bump.
- In horizontal operation, gravity also has an effect?
- Gravity must always be taken into account. It can be compensated for with a spring, for example.
- Are there variants for operation in a vacuum?
- The copper winding requires insulation. However, it is possible to influence the composition of the outgassing.
- What is the service life of the voice coil?
- If correctly designed and operated within the electrical data, it will last for many years. The weak point is premature wear of the bearing.
We are guaranteed to find the right actuator for you - free of charge & without obligation