Roh'lix® Linear Actuators

Roh'lix^® Linear Actuators

Designed to convert rotary motion into linear motion, Roh'lix Linear Actuators are ideal for positioning operations in all types of machinery. They are available in 5 different sizes from 5 to 200 pounds thrust. Designed for easy installation, Roh'lix Linear Actuators provide up to 100 million inches of travel life with near zero backlash.

Features • 5 different sizes, wide range of leads, various shaft diameters available	Benefits • Many units to choose from to get the right one for your application.
• 2-piece, split aluminum block	• Easy installation; the block halves can be assembled around the shaft without necessitating the removal of driveshaft and/or pillow-block bearings.
• Overload protection	• Roh'lix has the ability to slip in the event of a jam-up, protecting product equipment.
• Adjustable thrust setting	• Thrust can be set precisely to carry the load without slipping, but not so high that the Roh'lix builds up unnecessary thrust before overloading.
• Six ball bearings	• High efficiency–exceeding 90%. Long life; ranging from 2 million to 100 million inches of linear travel.
• Coil springs for thrust adjustment	• Preloads bearings to minimize backlash to less than 0.001 inch.Minimal backlash stays consistent throughout the lifetime of the unit.
• Socket-head shoulder screws to mount the bearings to the block.	• Allows for easy bearing replacement.

How Roh'Lix Works
Roh'lix Actuators have six precision ball bearings, three at each end of a two-piece aluminum block. Mounted at an angle relative to the drive shaft axis, the bearings convert drive shaft rotation into proportional linear travel. This is called lead. The Lead is determined by the angle of the bearings in the block.

The linear thrust capability of the Roh'lix is determined by the friction between the surfaces of the angled bearings and the drive shaft.

Size Range

•Thrust: 15 - 200 lbs (67 - 889 Newtons)
• Shaft Diameters: 3/8 - 2.00 inches (8 to 50 mm)
• Leads: 0.025 - 6.00 inches (0.625 to 150 mm)

The Roh'lix can be manufactured with virtually any fixed lead up to 3 times the shaft diameter. The lead, in combination with the driveshaft speed, determines the linear travel rate. By changing either the lead or the driveshaft speed, you can change the rate of linear travel.

Thrust capability is varied by adjusting the cap screws located on the top of the load block. Loads exceeding the thrust setting cause the Roh'lix to stop while the bearings rotate in place as long as the drive shaft is turning, until the overload is corrected.