Concentric LACT4-12V-20 Linear Actuator: 4" Stroke, 12V, 0.5"/s

Concentric LACT4-12V-20 Linear Actuator: 4" Stroke, 12V, 0.5"/s
Pololu item #: 2304 14 in stock

Price break Unit price (US$)
1 89.95 119.95
10 80.96 107.96


backorders allowed

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 20:1 reduction gearbox that gives the actuator a dynamic load rating of 110 lbs (50 kg) and a maximum speed of 0.5 in/s (1.3 cm/s), and it is rated to withstand up to 500 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 4-inch stroke and no potentiometer.

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 Description Specs (9) Pictures (8) Resources (6) FAQs (1) On the blog (0) 
What are the differences between the generic linear actuators and Concentric linear actuators?

The Concentric actuators are very similar to our generic actuators, but they differ in a few ways:

  • The Concentric actuators use different gearboxes to offer different combinations of speed and force while the generic ones use the same gearboxes but different threading pitch on the drive rod.
  • The feedback on the Concentric actuators with feedback pots is better than on the generics in the sense that nearly the full range of the feedback pot is used. On the generic actuators, typically only a subset of the feedback pot range is used (e.g. 10% for the 4" version). This is probably the main way in which the Concentric actuators are better.
  • Concentric actuators have a recommended maximum duty cycle of 25%; the generic actuators have a recommended maximum duty cycle of 15%.
  • Concentric actuators have a static load rating significantly higher than their dynamic load ratings; the generic actuators just have dynamic load ratings, and we do not recommend exceeding those.
  • A generic actuator is less expensive than the comparable Concentric actuator.

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