Frameless Motors with Encoders: Precision, Power, and Easy Fit

You want smooth motion. You want small size. You want big power. I get it.

I help you build fast, safe, smart machines. I make motion simple. I make motion right.

I am Jimi Technology Co., Ltd. I lead in actionneurs linéaires, Ascenseurs TVet systèmes d'automatisation. My gear turns énergie électrique en straight motion. You press a button. Things élever, inférieur, pousser, tirerou inclinaison. I am not just a seller. I am an expert. I am a fournisseur de solutions. I am a autorité de confiance. You can count on me.

What is a frameless motor?

• It is two parts. A stator et un rotor.
• No case. No shaft. No bearings.
• You put it right in your machine.
• It is entraînement direct. It has zero backlash.
• It can be BLDC ou PMSM.
• It can be slotless ou distributed winding.
• It can have a hollow shaft. You can pass wires through.
• It can have high pole count for smooth feel.
• It brings high torque density in a compact motor design.
• It cuts weight et size. It saves espace.

What is an encoder?

• It is a tiny eye. It tells position et vitesse.
• It can be absolu. You know spot right on power up.
• It can be incrémentale. You count steps.
• It can be optical, magneticou inductive.
• It can use Hall effect sensors.
• It can send digital ou analog output.
• It can talk BiSS, SSI, Sin/Cosou quadrature A/B/Z.
• It drives closed loop control avec PID ou FOC.

Why put them together?

• You get positionnement de précision et répétabilité.
• You get high dynamic response with quick start and stop.
• You get low cogging torque. Motion feels silky.
• You cut mechanical complexity. No belts. No gear lash.
• You improve thermal management. Heat flows to your frame.
• You raise reliability et MTBF.
• You hit tight spaces avec space-saving motor kits.

I build this into smart actuator components. I pair servo motor frameless kits with encoder feedback systems. I size them with performance curves, torque speed characteristics, continuous torque, peak torque, torque constant (Kt), back EMF constant, winding resistance, winding inductance, rotor inertia, thermal resistanceet operating temperature range. I design for EMI shielding, insulation class, environmental protection, and the right Indice de protection IP.

The promise to you

• I attract your eye. Small motor. Big push. Clean look.
• I point out the need. You want précision. You want la sécurité. You want vitesse.
• I meet the need. I build to your spec. I test. I prove.
• I position my product as your fix. I make it fit. I make it work. I back it up.

Benefits at a glance

How the encoder helps

• Absolute encoder: safe start, no homing, fast boot.
• Incremental encoder: low cost, simple build.
• Watch key specs:
  • Résolution in bits or CPR
  • Précision et répétabilité
  • Output interface and noise care

I match encoders from Renishaw, Heidenhain, Sick AG, Dynapar, Lika Electronic, Leine & Linde, Baumeret BEI Sensors. I also support résolveur feedback for heat and shock.

Where you can use it

• Robotique: collaborative robots, industrial robotic arms, end effectors, direct drive robotics, Harmonic Drive joints
• Mobile robots: AGV motor solutions and AMRs
• Medical: surgical robotics, tools, drills, prosthetics, exoskeletonset diagnostic imaging like CT et MRI
• Aerospace & defense: gimbal systems, surveillance, aircraft control surfaces, guidance systems, UAVs, drone gimbal
• Industrial automation: semiconductor manufacturing, wafer handling, vision systems, pick and place systems, machines d'emballage, ATE
• Other sites: cleanroom compatible motor, vacuum compatible motor, radiation tolerant motor, submersible motor, harsh environments

Pick the right kit: simple guide

I plan prototype motor development, small batch productionet volume production. I set connector options, cable lengthset mounting options. I document technical specifications et application notes.

My ecosystem: I fit what you use

I support drives and lines from Kollmorgen, Maxon, Faulhaber, Portescap by Sensata Technologies, Tecnotion, Moog Inc., Parker Hannifin et Parker Electromechanical, Celera Motion (Novanta)et Allied Motion. I sync with Copley Controls et Elmo Motion Control. I interface to Yaskawa, Mitsubishi Electric, Siemens, Fanuc, KUKA, Universal Robotset Stäubli systems. I follow NEMA et IEC rules. I meet EMI/EMC needs.

A quick look: performance chart

Torque Density   ██████████  10/10
Positional Hold  ██████████  10/10
Smooth Motion    █████████   9/10
Thermal Control  █████████   9/10
Footprint Size   ██████████  10/10  (smaller bar is better, lower is great)

Note: Your exact score can change by model and load and site.

Why Jimi for your build

• I bring expérience en systèmes de contrôle du mouvement pour machine builders et OEM teams.
• I deliver design considerations that cut risk.
• I solve system integration challenges fast.
• I give full engineering support from idea to field.
• I help you win a competitive advantage with faster time to market.

Want a ready path for linear motion today? See my lines:

• Explore high-accuracy electric linear actuators with servo precision: Actionneurs linéaires électriques
• Add smart feedback to your system with tight control: Actionneurs avec retour de position
• Build compact power stages for OEM motion: Servomoteurs
• Scale robust motion in plants and labs: Automatisation industrielle Actionneurs

A peek inside the tech

I can pair a brushless DC frameless motor ou un permanent magnet synchronous motor frameless with your load. I tune Contrôleur PID gains and set field‑oriented control. I shape the inertia match. I map performance curves. I verify répétabilité. I check noise reduction et vibration reduction. I plan thermal resistance paths. I guard with EMI shielding.

I test in salle blanche, vide, IP67, IP65, heat, and shock. I set operating temperature range. I note mean time between failures (MTBF). I align to motor insulation class.

I choose the right encoder resolution for your job. A robot joint needs high bits. A conveyor needs fewer counts. A gimbal motor needs Sin/Cos for smooth blend. A lab tool may need BiSS for noise immunity.

I match the stack to your contrôleur on EtherCAT, CANopenou PROFINET. I route cables through a hollow shaft. I mount to your frame with simple bolts. I set cable lengths et connector options that fit your panel.

Real world use cases

• A collaborative robot joint with a direct drive motor et absolute encoder. The arm starts safe with no home move and no pinch risk.
• A surgical robot hand tool with a slotless frameless motor. It runs smooth and quiet. It fits in a tight shell.
• Un AGV hub with a servo motor frameless kit and magnetic encoder. It gives high dynamic response and holds torque on ramps.
• A semi-conducteur wafer stage with optical encoder integration et vacuum compatible motor. It hits positionnement de précision avec high repeatability.
• A drone gimbal avec low cogging torque motor et incremental encoder. It makes video steady.

My promise

You need speed. You need space. You need control. I deliver. I build custom frameless motor kits. I design for OEM motor integration. I bring design flexibility. I keep cost vs performance in line. I ship on time.

I can guide you with a motor sizing guide et motor selection criteria. I share application notes et technical specifications. I support prototype, small batchet volume production.

When you want lift and tilt too, I bring full lines in lifting columns, Ascenseurs TV, and desk standing gear. I can tie a frameless motor with encoder to your actuator assemblies so your build stays clean and fast.

Résumé

• Frameless plus codeur gives précision, pouvoiret intégration transparente.
• You get compact design, zero backlashet high efficiency.
• You gain closed loop control et smarter motion.
• I help you pick and build. I stand by you.

Références

• Kollmorgen. Direct Drive Frameless Motors Selection Guide.
• Renishaw. Encoder Fundamentals and Applications Notes.
• Heidenhain. Absolute vs Incremental Encoders Technical Overview.
• IEC 60034 Series. Rotating Electrical Machines Standards.
• NEMA MG 1. Motors and Generators Guidance.
• Celera Motion (Novanta). Inductive and Optical Encoder Technologies.
• Copley Controls. FOC and Servo Tuning Application Notes.
• Allied Motion. Frameless BLDC Motor Integration Guide.