Planetary roller screws that carry the heaviest loads with micron precision.
We engineer and manufacture planetary roller screws for the demanding end of linear motion — aerospace, defence, robotics and industrial automation — built to run at high duty cycles for decades.
Four roller-screw families, one engineering standard
From standard high-load units to ultra-fine differential screws, every family is machined, ground and inspected in-house to the same tolerances.
RV / HRV
Standard & high-load planetary roller screws for the widest range of high-thrust, high-duty applications.
Explore RV →RVI Inverted
Rotating-nut inverted design for compact, integrated actuator packages where the screw stays fixed.
Explore RVI →RVR Recirculating
Recirculating roller design achieving very fine leads for high-resolution positioning.
Explore RVR →RVD Differential
Differential roller principle for ultra-fine leads and exceptional resolution in small envelopes.
Explore RVD →Where ball screws and hydraulics reach their limit
When cycle counts are high, loads are heavy and downtime is expensive, planetary roller screws earn their place.
Roller screw vs ball screw →Higher load capacity
Line contact across many threaded rollers carries far more thrust than the point contact of a ball screw in the same envelope.
Long service life
Load spread over dozens of contacts lowers stress, extending fatigue life for high duty-cycle operation.
Fine leads at speed
Small leads that ball screws cannot produce, run at high rotational speed without recirculation limits.
High stiffness & shock resistance
Dense contact geometry resists deflection and absorbs peak forces that would brinell a ball screw.