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Screw Assemblies
Planetary Screw Assemblies PLSA
Planetary Screw Assemblies PLSA Compact. Powerful. Quiet.

The Planetary Screw Assembly PLSA is an assembly that consists of a screw and a nut with planets as the anti-friction elements. It serves to convert rotary motion into linear motion. The PLSA is designed to provide increased thrust loads quietly, efficiently, cleanly, and with a higher degree of repeatability and precision when compared with drive solutions of similar sizes. Simply, the PLSA offers higher load capacity and greater overall performance in a smaller package.

Get more information about Rexroth's new Planetary Screw Assembly PLSA (PDF)
PLSA Possible Applications / Target Markets

-Plastic injection molding machines
-Cutting operations
-Pressing operations
-Die cutting
-Friction welding
-Measuring and material testing machines

Target Markets/Industry Segments

-Plastics manufacturing
-Metals industry
-Medical technology
-Printing and paper industry
-Machine tools
-Automation and handling
-Food and packaging industries
PLSA Key Benefits

-Superior axial load capacities provide extended service life and less machine-downtime
-High axial rigidity w/best-in-class positional accuracy generates consistent, precise, and quality output
-PLSA is capable of providing shorter process cycle times, giving higher throughput as a result of speeds up to 1.5m/s
-Quiet operation
-Reduce motor sizes w/the high efficiency precision roller technology
-Lower operational cost when compared to hydraulics
-Extended lubrication life and protection from and for the environment w/Rexroth’s high performing sealing system
Notable Features

Design Flexibility

-Current sizes and leads available: 20x5, 30x5, 30x10, 48x5, and 48x10. Additional sizes are in development.
-Standard overall screw lengths up to 3000mm (depending on the diameter)
-Different nut styles available
-Custom end machining available
-Numerous types of end bearing supports available

Overall Superior Performance compared to Similar-sized Screw Drives

-Dynamic and static load capacities up to 220kN and 481kN, respectively
-Higher operational life
-High (but similar) positioning accuracy (as low as 0.023mm / 300mm travel)
PLSA literature
Download the PLSA catalog
Download the PLSA brochure
Featured Video
Watch PLSA on YouTube
Watch PLSA on YouTube
CAD Files
PLSA CAD configurator
PLSA CAD configurator
Energy Efficiency
Download Rexroth's 4EE brochure
Download Rexroth's 4EE brochure
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