Frameless Joint Servo Motors
Stator and rotor direct-drive motor kits designed for integration into robotic joints, humanoid limbs, precision gimbals, and surgical arms.
Stator/rotor kits for humanoid and arm joints require specialized tooling and precision potting. Established US lines include Kollmorgen (Radford, VA), Celera Motion (Bedford, MA), and maxon's dedicated US manufacturing plant in Taunton, MA.
US Manufacturers & Suppliers
Celera Motion / MicroE
✓ NDAAPrecision motion division of Novanta specializing in direct-drive frameless BLDC motor kits (Omni+ and Agility series, incorporating heritage ThinGap slotless and Applimotion technology) and compact optical rotary encoders (MicroE Optira, PurePrecision). Specifically optimized for surgical robotics, collaborative robot joints, and humanoid limbs.
Kollmorgen
✓ NDAAPioneer in high-performance direct-drive and frameless servo motors (TBM, TBM2G, KBM series) engineered specifically for humanoid robotic joints, surgical manipulators, and aerospace gimbals. Direct US manufacturing in Radford, VA delivering high torque density and thermal dissipation.
maxon Precision Motors
✓ NDAAUS manufacturing facility of the Swiss precision motor specialist maxon. The 59,000 sq ft Taunton facility produces, winds, and modifies custom brushless DC motors (ECX series), gearheads, and precision drives specifically for US aerospace, medical robotics, and defense UAS programs.
Moog Inc.
✓ NDAAGlobal precision motion controls leader. Manufactures high-reliability electrical power and high-speed gigabit data slip rings across campuses in Christiansburg and Blacksburg, VA for industrial robotics, defense turrets, and UAV gimbals. Also designs custom brushless servo motors and flight actuation systems.