Planetary micro roller screws engineered for extreme loads in miniature envelopes. From 1.5 mm ultra-micro configurations to inverted rotor-integrated designs and custom screw shaft/nut sets.
Use this page as a pre-RFQ navigator: compare our core roller screw families, evaluate load ratings against stroke and envelope, and determine the right precision grade, preload, material, and manufacturing path for surgical, aerospace, or humanoid robotic actuators.
High-precision micro planetary roller screws for very compact spaces.
For engineering teams requiring tight packaging and high axial loads.
Nut-driven inverted design for maximum stroke-to-length ratio.
Ideal for actuator manufacturers looking to integrate the screw directly into the motor rotor.
Fine-lead, high-stiffness roller screw designs for precision positioning and demanding actuator programs.
For engineering teams that need fine travel resolution, high stiffness, or hydraulic-cylinder replacement in compact electromechanical systems.
Side-by-side reference specs for pre-RFQ evaluation. Custom configurations may extend beyond these standard ranges. All families support MOQ 1 pc for prototype evaluation.
| Parameter | Ultra-Micro RV | Inverted RVi / ISR | Recirculating / Heavy Duty |
|---|---|---|---|
| Diameter range | 1.5 – 12 mm | 5 – 20 mm | 12 – 120 mm |
| Lead range | 0.5 – 4 mm | 1 – 6 mm | 2 – 20 mm |
| Dynamic load capacity | 0.5 – 15 kN | 2 – 25 kN | 10 – 200 kN |
| Accuracy grade | P0 – P5 | P3 – P7 | P1 – P5 |
| Efficiency | 80 – 90% | 75 – 88% | 80 – 92% |
| Reference price | $15 – $150 | $50 – $350 | $80 – $850 |
| Sample lead time | 2 – 3 weeks | 2 – 4 weeks | 3 – 5 weeks |
| Typical applications | Robot fingers, medical, micro stages | Humanoid joints, compact actuators | Aerospace, heavy-load EMA |
Representative micro roller screw, inverted roller screw, screw shaft, and precision nut components used in early RFQ discussions.
Inquiry Email
Please include screw type, diameter, lead, stroke, load, drawings, STEP files, and quantity timeline.
NDA signing supported prior to drawing uploads.
Instant Chat
+86 18857971991Quick clarification for drawings, sample photos, and lead-time checks. Complete RFQs are usually triaged within one business day.
