Frameless Torque Motors

Frameless torque motors ship as separate rotor and stator components — you integrate them into your own joint housing and bearing system. Low cogging, high torque density, and compact radial profile make them the default choice for humanoid robot joints, cobot arms, and precision rotary stages. We supply OD 50 — 160 mm across the range, continuous torque 0.5 — 10 Nm, with stator windings tuned to your voltage and current spec.

• Humanoid Robot Joints
• Collaborative Robot Arms

OD

OD 50 / 70 / 90 / 110 / 130 / 160 mm

Torque

Continuous 0.5 — 10 Nm; peak 1.5 — 30 Nm

Voltage

24 / 48 / 60 / 72 V DC (winding made to spec)

Tolerance

Air-gap uniformity controlled at the rotor/stator pair level

Coating

Stator: insulating varnish + potting; rotor: per arc segment coating

Temperature

Winding insulation class H (180°C); magnets per chosen grade

RoHS

Compliant (winding, magnets, varnish all qualified)

REACH

SVHC Declaration available

Export control

Complete-assembly exports subject to review based on destination, end-user, and end-use; high-grade-magnet variants require advance disclosure

MOQ

Sample 1 set on inquiry; pricing improves at 10+ sets

Lead time

Sample 6–8 weeks; volume scheduled monthly