Planetary Roller Screw
Spiracon Planetary Roller Screws
Go beyond ball screw performance with a precision ground Spiracon™ Planetary Roller Screw and matched roller nuts for the ultimate in linear motion performance.
The Spiracon™ Planetary Roller Screw system consists of a multi-start screw with an involute thread form and multiple planetary rollers with annular grooves engaging with the screw. These highly efficient designs have a high load carrying capability together with almost no axial backlash and high durability. Ideal for high performance applications requiring true continuous duty, high efficiency, high accuracy and high speed.
Useful Information
- Key Features
- Typical Applications
- Selecting the right Planetary Roller Screw
- Special Designs
- Roller Screw
Key Features
- Continuous duty
- High dynamic load capacity from 45 kN to 1200 kN
- Static load rating up to 1800kN
- High efficiency
- High positional accuracy
- 10 Standard sizes from 20mm to 120mm diameter
- Long Life
- Low maintenance
- Low noise
- Same nut fits both right and left handed threaded screws
- Clean operation
- Custom designs to suit your exact application requirements
Typical Applications
With a number of advantages over standard machine screws and ball screws the Planetary Roller Screw is ideally suited for applications in Nuclear engineering, Areospace, Metal processing, Medical, food processing and Offshore and Marine industries.
Applications include: Robotics, Laser tracking, Simulators, Medical scanners and more. View our industries page for examples and further information.
Selecting the right Planetary Roller Screw
There are 3 simple steps to follow when selecting a Spiracon roller screw:
- Load, speed and life
- Critical speed, buckling and deflection
- Torque and power
View our 3 Step Spiracon Selection example. You may also find our Engineer Reference Guide useful.
Special Designs
The Spiracon™ Planetary Roller Screw design has successfully been applied in many varied ‘special’ applications, requiring for example:
- Specialist end machining on each end of roller screw
- Flange on end face of Roller Nut
- Threaded End on Roller Nut
- Trunnion mounts on roller nut
- Full power stop nut
- Spherical bearings located on roller nut end faces
- Stainless steel version
- Special custom designs available up to 1800kN
To discuss your requirements further please Contact Us or submit an application analysis form.
Roller Screw
The Spiracon™ Planetary Roller Screw system consists of a multi-start screw with an involute thread form and multiple planetary rollers with annular grooves engaging with the screw.
The rolling action results in a high efficiency mechanism, while the line contact and hardened and ground construction achieves a high dynamic load carrying capacity, combined with almost no axial backlash or wear and long life and low maintenance.
Where you need the ultimate performance in industries such as oil & gas, nuclear, defence, steel and automotive these roller screws deliver.
Accessories
Bellows Boot
Corrosion Protection
End Fittings
Secondary Guide
