Cylinder Selection

LS Series Linear Slide Selection Procedure
1.  Compile Application Requirements
To determine the appropriate slide model for an application, compile the following information:
  • Available pressure (PSI)
  • Weight of load (lbs. or kgs.)
  • Orientation of load (lbs. or kgs.)
  • Velocity of load (in./sec. or mm/sec.)
  • Stroke length (in. or mm)
2.  Select Slide Size
  • Consult the Theoretical Force vs. Pressure chart
  • Cross reference the load force (or load weight if force is not known) and the available operating pressure. If the intersection falls below the diagonal line, and if moments do not exceed maximum values listed for that model (see Step 3), the actuator will accommodate the application. If the intersection is above the diagonal line, a larger bore size should be considered.
NOTE: Additional force may be required to obtain the necessary acceleration for vertical or horizontal loads.

3.  Determine Nature of Load and the Effect of Bending Moments
If the slide will guide and support a load located directly over the center of carrier, bending moments will not be a factor in the slide selection. NOTE: The maximum load "L" must not exceed the capacity limits of the slide selected.

  • Bending Moments
    For off center or side loads, determine the distance from the center of mass of the load to the center of the carrier bracket. This measurement is needed to calculate the torque for bending moments.
    Should the resulting maximum bending moment exceed figures indicated on the chart, external guides, auxiliary carriers or a larger bore size should be considered.
  • Auxiliary Carrier Bending Moments
    The auxiliary carrier option increases load carrying capacity and bending moments. Auxiliary carriers can be ordered with or without an internal piston.

    Important: When ordering, determine the working stroke, then the minimum distance required between carriers (dimension "D" in Auxiliary Carrier Bending Moments chart). When ordered, Tolomatic's configurator will calculate the overall length of the actuator.

    NOTE: breakaway pressure will increase when using auxiliary carriers and decrease the effective stroke of the slide based on the distance between the center lines of the carriers.

4. Determine Mounting Plate Support Requirements

  • Consult the Mounting Support chart for the model selected.
  • Cross reference the load weight and maximum distance between supports.
5.  Consider Options
  • Switches- dc Reed, Hall-effect or ac Triac
  • Proximity Sensors
  • Shock Absorbers- if needed