Roh’Lix® Linear Actuators

Roh’Lix® Linear Actuators The Roh’Lix Linear Actuator is a device that converts rotary motion into linear motion. The Roh’Lix uses rolling element ball bearings that trace a helix pattern along the shaft, which produces a Rolling Helix, or Roh’Lix for short. Available sizes have thrust capacities ranging from 15 to 200 lbs (67 to 889 Newtons), shaft diameters ranging from 3/8 to 2 inches (8 to 50 mm), and leads ranging from 0.025 to 6.00 inches (0.625 to 150 mm). The Roh’Lix Linear Actuator consists of six preloaded bearings that contact the shaft at an angle. When the shaft is rotated, the bearings...

Roh’Lix® Linear Actuators Operating Characteristics Roh’Lix Life Expectancy Roh’Lix lifetime can range anywhere from 2 million to over 100 million inches of linear travel, depending on the application variables. The following factors should be considered to maximize the lifetime of Roh’Lix: T hrust: Roh’Lix lifetime is increased when the application thrust load is a smaller percentage of the unit’s thrust rating. Selecting an oversized Roh’Lix is advisable to achieve the greatest lifetime of the unit. Lead/Shaft Speed: Higher lead units will produce longer lifetime because fewer bearing revolutions...

How to Select a Roh’Lix® Linear Actuator 1. D etermine Thrust Requirement. Horizontal Applications: F=µW Vertical Applications: F=W+ µW F= thrust requirement (Lbs.) µ= Coefficient of friction W= weight of load being moved (Lbs.) 3. Select Roh’Lix Model. Choose a Roh’Lix Model from Figure 2a or 2b that has a thrust equal to or exceeding the thrust requirement determined in Step 1 and lead that fits the driveshaft RPM and linear speed needs from Step 2. 2. Determine Lead/ Driveshaft Speed/ Linear Speed. Driveshaft RPM= 60 x Linear Speed Roh’Lix Lead 4. V erify Shaft Diameter. Driveshaft speed should...

How to Select a Roh’Lix® Linear Actuator Maximum Recommended Drive Shaft Speed 1600 Length (Inches) Bearing Mounting Method A Both ends supported One end fixed other end supported Length (Inches) Both ends fixed Length (Inches) Length (Inches) Dimensions Size units H-Tapped Mounting Holes *Dimension at zero thrust setting.

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