Rollvis

A long-established Swiss maker of planetary roller screws, a key supplier for humanoid robots' linear joints.

Rollvis SA was founded in 1970 and is based in Plan-les-Ouates, near Geneva, Switzerland, specializing in planetary roller screws: several threaded rollers replace the steel balls used in a ball screw to turn a motor's rotation into linear push-pull motion, giving more contact lines and therefore higher load capacity, stiffness, and shock resistance than a ball screw. Its product line includes the standard RV/HRV, the inverted RVI, the recirculating RVR, and the differential RVD types, and its traditional customers are in aerospace, medical devices, research, and industry. Humanoid robots commonly use linear actuators — a motor paired with a planetary roller screw — at joints such as the knee, elbow, and ankle; this kind of high-precision screw has long been dominated by a handful of European makers, and Rollvis is one frequently mentioned, as well as a benchmark for domestic substitution in China.

ExampleAccording to supply-chain teardown analyses, Tesla's Optimus uses an inverted planetary roller screw for its linear joints — exactly the type of product Rollvis's RVI line makes.

Also called

Rollvis SA

Related

Planetary Roller Screw · Inverted Planetary Roller Screw · Ball Screw · Linear Actuator (Electric Cylinder) · Tesla Optimus · Domestic Substitution

Sources

Rollvis SA 官网 (Chinese)

As of

2026-09