Radar · Aerospace · Naval · Specialist sectors
Servo motors for radar, aerospace, naval and other high-precision systems
Radar pedestals, ship stabilisers, aircraft actuators and electro-optical gimbals use high-precision brushless servo motors, frameless torque motors and resolvers. Star Automations repairs and tests housed servo motors, resolvers and encoders of this kind in India after a free repairability check, and lists here the motors, makers and sectors where they are used.
Which motion parts sit inside precision equipment
Typical motion and feedback parts, by equipment type.
| Radar and satcom pedestals | Direct-drive frameless or brushless torque motors, resolvers or synchros, slip rings for power and data. |
|---|---|
| Electro-optical and infrared gimbals | Brushless servo and torque motors with resolvers for commutation and position feedback. |
| Aircraft actuation | Rare-earth brushless servo motors with planetary gears, resolvers or encoders and smart servo controllers, for flight surfaces, landing gear and cargo doors. |
| Ship systems | Servo motors for stabiliser fins, tracking pedestals, hatches and hangar doors, sealed for harsh environments. |
| Valves, seats and small actuators | Brushless slotted and slotless, coreless DC, can-stack, disc-magnet and brush DC motors. |
| UAV and eVTOL | Low-voltage, high power-density servo motors and frameless motors. |
Makers and series named for precision and aerospace use
Series names below are as published by each maker. Send the label photo for any other model.
Kollmorgen
TBM and RBE frameless direct-drive motors and KBM frameless platforms for pedestals; EKM servo motors (MilSpec 810E rated, IP67, stainless steel shaft); AKM and Goldline servo motors. Kollmorgen repair.
Moog
Brush and brushless servo, torque and cube motors, resolvers and synchros, and slip rings for mechanically steered radar. Moog repair.
Portescap
Slotted and slotless BLDC, coreless DC, can-stack, disc-magnet, brush DC and linear stepper motors. Portescap repair.
Parker, Pacific Scientific and Danaher
Servo and brushless motors used in precision motion systems. Parker, Pacific Scientific, Danaher.
Other makers in this field
Woodward (aircraft actuation), Ducommun, Wittenstein and Kearfott also supply motors, actuators and resolvers for these systems. Send the label photo for any of them.
Resolver and encoder makers are on feedback device sales and service. All servo brands are on servo motor repair.
Resolvers, synchros and encoders in precision systems
| Brushless resolver | Offered in 1, 2, 4, 8, 16, 32 and 36 speeds, typically 400 to 5,000 Hz (up to 20,000 Hz available). Mounts on the shaft and housing with no coupling. Used for motor commutation and servo feedback. |
|---|---|
| Synchro | Older transmitter and receiver pairs for position and velocity, still found in legacy military and marine equipment. |
| Absolute encoder | High-resolution position at power-up for fine pointing. See absolute encoder repair. |
| R/D converter | Converts resolver signals to digital position for the controller. |
Repair pages: resolver repair and alignment, Hall sensor repair and encoder, resolver or Hall sensor: how each works.
Where servo motors are used beyond the factory floor
Typical uses by sector. The exact motor depends on the machine.
Space and astronomy
Satellite ground antennas, telescope mounts and tracking drives.
Defence, radar and surveillance
Radar and satcom pedestals, electro-optical and infrared gimbals, pan-tilt heads.
Aviation
Flight surfaces, landing gear, cargo doors, seats, fuel and valve actuators, UAV and eVTOL propulsion and control.
Marine and offshore
Stabiliser fins, tracking pedestals, hatches, hangar doors, valve and winch drives.
Medical and laboratory
Surgical robots, diagnostic equipment, ventilators, pumps, patient positioning, lab automation.
Semiconductor, electronics and battery making
Wafer and component handling, pick-and-place, electrode and cell handling lines.
Laser, optics and metrology
Galvo and stage drives, coordinate measuring machines, inspection gantries.
Energy
Wind turbine pitch and yaw drives, solar trackers, valve actuators in process plants.
Media, entertainment and simulation
Camera pan-tilt heads and stabilisers, motion simulators, ride systems, stage and set automation, animatronics.
Healthcare and mobility aids
Exoskeletons, prosthetics and rehabilitation devices.
Factory automation
Robots, CNC machine tools, packaging, printing, textile, plastics and injection moulding, cable and wire machines.
Security and infrastructure
Security camera pan-tilt units, barriers, gates and inspection systems.
How a precision motor or resolver job runs
- Send the nameplate or label photo, the fault and the equipment type on WhatsApp or the form.
- We confirm repairability and quote. Not every sealed or frameless unit can be repaired outside the maker, and we tell you which after the check.
- Bench diagnosis, repair and feedback alignment on our universal servo motor test system.
- Run test and printed report, then dispatch.
Star Automations is an independent multi-brand repair company, not an OEM or authorised service centre, and does not claim defence or aerospace quality approvals. The equipment owner confirms any approval, security or export requirement before sending a unit. Brand names only describe the units we repair.
Which motors are used in radar antenna pedestals?
Mechanically steered radar and satellite-communication pedestals use brushless servo and torque motors, often direct-drive frameless motors, with resolvers or synchros for position and velocity feedback and slip rings to carry power and data through 360-degree rotation. Makers such as Kollmorgen (TBM, RBE and KBM frameless series) and Moog (servo, torque and cube motors, resolvers, synchros and slip rings) publish products for these pedestals.
Which motors are used on ships and naval systems?
Typical shipboard uses are radar and satellite tracking pedestals that must hold elevation and azimuth in rough seas, stabiliser fins, automatic hatchways and hangar doors. Makers list frameless motors for pedestals and sealed servo motors such as Kollmorgen EKM (MilSpec 810E rated, IP67, stainless steel shaft) for harsh environments.
Which motors are used in aircraft?
Electromechanical actuators move flight surfaces, extend and retract landing gear, open cargo doors and steer antennas. High-precision actuators use rare-earth brushless servo motors with integral planetary gears and position control. Smaller brushless, coreless DC and disc-magnet motors are used in valves, seats and fuel systems, and brushless servo motors in eVTOL and UAV propulsion and control surfaces.
What is a frameless torque motor?
A frameless torque motor is supplied as a separate rotor and stator, without housing, shaft or bearings, and is built into the machine structure. It removes couplings and bearings, so it is compact, stiff and direct-drive, which suits gimbals, pedestals and rotary tables.
What is a resolver and why is it used in aerospace and military equipment?
A resolver is an analogue position sensor with sine and cosine outputs. It has no electronics in the sensor, so it tolerates heat, shock and vibration. Brushless resolvers are offered in 1, 2, 4, 8, 16, 32 and 36 speeds, typically at 400 to 5,000 Hz, for motor commutation and servo feedback in radar, electro-optical and infrared sensor systems.
Do you repair resolvers and synchros?
We repair and align resolvers on servo and BLDC motors. See resolver repair, single-speed and multi-speed resolvers. Send the label photo for a free repairability check.
Do you repair Moog, Kollmorgen, Parker and Portescap motors?
We repair housed servo and brushless motors from these makers after a free repairability check, and test feedback without the original drive on our universal servo motor test system. Frameless kits, sealed or potted units may not be repairable outside the manufacturer, and we say so after the check. See Moog, Kollmorgen, Parker and Portescap.
Do you hold defence or aerospace quality approvals?
No. Star Automations is an independent multi-brand repair company, not an OEM or authorised service centre, and we do not claim defence or aerospace quality approvals. The equipment owner confirms any approval, security or export requirement before sending a unit.
Which other sectors use servo motors?
Beyond factories, servo motors run surgical robots, ventilators and diagnostic equipment, semiconductor and battery manufacturing, laser processing, metrology machines, telescopes and satellite ground antennas, wind turbine pitch and yaw drives, solar trackers, camera pan-tilt heads and stabilisers, motion simulators, stage automation and exoskeletons. See the sector list on this page.
What decides which servo motor a precision system needs?
Peak and continuous torque, speed range, load-to-motor inertia ratio, positioning accuracy and feedback resolution, environment (temperature, vibration, ingress protection) and size or weight limits. Feedback type matters: resolvers for rugged duty, high-resolution absolute encoders for fine positioning.
Can you test a precision servo motor without its original drive?
Yes. Our universal servo motor test system reads the feedback, aligns it and runs the motor in closed loop without the original drive, and every unit returns with a printed test report.
Can you supply or source a replacement motor or resolver?
We check our stock and then source to order, including obsolete parts. Availability, condition (new-surplus, refurbished and tested, or used), price and lead time are stated on the quotation. See feedback device sales and service.
How long does repair take and what warranty do you give?
Emergency same day, urgent 3 working days and standard 7 working days, where the fault and parts allow. Turnaround counts from when the unit reaches our bench and the quote is approved. Warranty is stated on each quotation.
What should I send for a quote?
A photo of the nameplate or label, the fault or alarm, and the make and model of the equipment. Send it on WhatsApp +91 97866 22233 or email info@starautomations.com.