Planetary roller screw

high rotational speedinverted

Overview
High-speed capability for multiple markets. An inverted roller screw drive operates on the same principle as a planetary roller screw. To reduce the overall dimensions of the actuator, either the nut or the screw can be used directly as the thrust tube. The inverted configuration provides high-speed performance comparable to planetary roller screws while the load acts directly on the thrust tube.

Benefits and features

• ISO3408 classes 3–5
• Screw diameter up to 48 mm (1.89 in)
• Compact design and simplified rotor integration reduce the number of parts in your system

Notes for machine designers

• Inverted roller screw drives are available only for screws up to 48 mm (1.89 in)
• For these sizes, designers can use the same load capacities and nut dimensions as listed in the catalog
• Nut dimensions can be customized on request

Surface treatment and finishing

• Corrosion protection
• Enhanced resistance for aerospace and motorsport applications
• Friction reduction to minimize wear and extend service life

Characteristics / Technical specifications (summary)

• Operating principle: Planetary roller screw principle, adaptable as an inverted version
• Load transmission: Load acts directly on the thrust tube
• High-speed capability: Comparable to planetary roller screws
• ISO classes: ISO3408 classes 3–5
• Max. screw diameter: Up to 48 mm (1.89 in)
• Availability: Inverted version available only for screws ≤ 48 mm
• Load capacity / nut dimensions: As per catalog; nut dimensions customizable on request
• Options: Special surface treatments for corrosion protection, enhanced resistance and friction reduction