Linear Slide Actuators - Screw Driven
Single – Multi-Axis Actuators, 250 – 1000 Lbs. Capacities
Paletti screw driven slide actuators provide Guided Motion in a single unit and are ideally suited for your material handling and positioning tasks. Additionally, our screw actuators are easy to incorporate into single or multi axis applications and offer long service life with minimal noise and maintenance.
Paletti’s screw driven linear axis systems are ideally suited for applications with high load forces that require high repeatability and accuracy. Paletti screw actuators are driven either with ball or trapezoid screws.
Depending on the model for a given application, the actuators will be configured with an internal and/or external carriage to the rail.
Screw Driven Linear Slide Actuators – Design Options
Fixed / Float Bearing Screw Support
Typical thread-forms for the Ball and Trapezoid Screws used in Paletti screw driven actuators
All Paletti screw actuators are provided with the classic fixed (double bearing) – float (single bearing) screw supports shown above, custom bearing support needs can also be accommodated.
Paletti offers both the ball and trapezoid screw options shown above within our actuators. Common to the industry; we refer to thread forms for our screws by screw diameter x and then thread pitch (for example 20mm x 5mm).
Paletti Screw Driven Linear Slide Actuators – Quick Reference Performance Guide
| Model | Screw Type - Diameter & Lead | Max Dynamic Load(Lb/N) | Max Static Load (Fz)(Lb/N) | Max Static Load (Fy)(Lb/N) | Max Speed | Torque to Raise 1kN (in-lb / Nm) |
|---|---|---|---|---|---|---|
| BARU250E | Ball 20 x 5 | 250 / 1112 | 450 / 2000 | 875 / 3900 | 0.175 m/s | 7.83 / .885 |
| BARU250G | Ball 20 x 20 | 250 / 1112 | 450 / 2000 | 875 / 3900 | 0.635 m/s | 31.33 / 3.54 |
| TTRU250D | Trap 20 x 4 | 250 / 1112 | 450 / 2000 | 875 / 3900 | 0.135 m/s | 16.11 / 1.82 |
| BARU350E | Ball 20 x 5 | 350 / 1556 | 450 / 2000 | 875 / 3900 | 0.165m/s | 7.83 / .885 |
| BARU350G | Ball 20 x 20 | 350 / 1556 | 450 / 2000 | 875 / 3900 | 0.635 m/s | 31.33 / 3.54 |
| TTRU350D | Trap 20 x 4 | 350 / 1556 | 450 / 2000 | 875 / 3900 | 0.135m/s | 16.11 / 1.82 |
| BARU450E | Ball 20 x 5 | 450 / 2000 | 450 / 2000 | 875 / 3900 | 0.155 m/s | 7.83 / .885 |
| BARU450G | Ball 20 x 20 | 450 / 2000 | 450 / 2000 | 875 / 3900 | 0.635 m/s | 31.33 / 3.54 |
| TTRU450D | Trap 20 x 4 | 450 / 2000 | 450 / 2000 | 875 / 3900 | 0.125 m/s | 16.11 / 1.82 |
| BARU1000E | Ball 20 x 5 | 1000 / 4448 | 2484 / 11050 | 1281 / 5700 | 0.14 m/s | 7.83 / .885 |
| BARU1000G | Ball 20 x 20 | 1000 / 4448 | 2484 / 11050 | 1281 / 5700 | 0.585 m/s | 31.33 / 3.54 |
*Slide table to the left to see more data
Ball and Trapezoid Screw Actuator Options, Advantages, and Disadvantages:
- 20mm x 20mm ball screw slide actuators – are highly efficient, capable of high speeds, and can offer long life spans and high duty cycles. However, the torque requirements for these models can be high.
- 20mm x 5mm ball screw slide actuators – are highly efficient, operate at moderate and easy to control speeds, and can offer long life spans and high duty cycles. The torque requirements are typically low.
- 20mm x 4mm trapezoid screw slide actuators – operate at moderate and easy to control speeds. Offer precise motion. Low torque requirements. The shallow pitch screw thread allows for eliminating the need for a motorized brake in some applications.
Some additional product advantages with Paletti screw driven slide actuators:
- Single axis through multi-axis configurations
- Internal or External to the rail carriages configurations with either with hardened and ground rollers and rails, or re-circulating ball bearings and rails
- Different screw pitches available to more closely match the desired speed
- Excellent lead accuracy control
- Paletti ball screw actuators are 90% efficient for low power requirements
- Customizable dimensions available for the carriage
- End of carriage covers with lubrication ports and brushes to help keep the rails clean
- Options for motor / gear reducer mounts
- Options for mechanical or electronic limits
- Single piece carriage and rail construction
- 8mm T-Slot mounting functionality
- Corrosion resistant component options
We invite you to review the subpages for our screw driven actuators. Each actuator subpage showcases our performance specifications, configuration options, dimensional drawings, catalog page pdf, and engineering resource links. And as always…