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25mm Frameless Torque Motor for Precision Direct Drive Applications

25mm frameless motor is designed for compact direct-drive systems with high precision and efficiency. Ideal for small robotic joints, medical devices, and instrumentation.
  • 25ZWC10X-1

  • Modar Motor

  • 25mm

  • 70W

  • 0.032N.m

  • 24V

  • 100% pure copper

  • 2

  • about 30 days

Availability:

25mm Frameless Motor — Overview

The 25mm frameless motor is a compact direct-drive solution designed for ultra-small precision systems. With high torque density in a minimal footprint, this motor series is ideal for applications where space is limited and smooth, accurate motion is critical.


25mm frameless motor is commonly integrated into custom housings, enabling flexible mechanical design for OEM customers in Europe and North America.


high torque 25mm frameless motor


Key Features

  • Ultra-compact 25mm frame size

  • High torque density for direct-drive systems

  • Low cogging torque for smooth motion

  • Sensorless or sensored control compatible

  • Designed for OEM mechanical integration


Typical Applications of 25mm Frameless Motor


Application Positioning

The 25mm frameless motor is designed for ultra-compact direct-drive systems where installation space and inertia must be minimized.


Typical Industries & Use Cases

25mm frameless motor is commonly used in miniature robotic joints, handheld medical devices, precision optical instruments, and laboratory automation equipment requiring lightweight and responsive motion.

  • Medical instruments and diagnostic equipment

  • Optical positioning systems

  • Laboratory automation modules

  • Small robotic joints and actuators


Integration Value

The small diameter allows engineers to integrate the motor directly into compact mechanisms, improving positioning accuracy while reducing mechanical complexity.



Technical Specifications (25mm Frameless Motor Series)

The following technical data applies to the 25mm frameless motor 25ZWC10X-1.


  Motor Characteristics
Motor part number 25ZWC10X-1
Stator outer diameter mm 25 (±0.016)
Rotor inner diameter mm 11.6 (+0.018)
Number of slots - 12 
Pole pairs -
Phase-to-phase resistance 0.42 
Phase-to-phase inductance mH 0.123 
Winding connection method - Star connection
Insulation class - F
Duty type - S2
Feedback method - /
Commutation angle - 120°
Insulation strength (Withstand voltage) - 600VAC/1s/3mA
Insulation resistance - 50MΩ/500VDC
Stator weight g 20 
Rotor weight g 3.2 
No-load speed RPM 26000 
No-load current A 0.65(REF)
Rated voltage VDC 24 
Rated power W 70 
Rated torque N·m 0.032 
Rated speed RPM 22650 
Rated current A 3.8 
Torque constant Nm/A 0.009 
Back-EMF constant (effective value) Vrms/Krpm 0.65 
Peak torque N·m 0.105 
Peak current A 13.0 
Rotor inertia g·cm² 1.47 


Dimension Drawing

25mm frameless motor drawing


Lead-out type Lead-out color Function
UL1332 AWG20 Yellow U phase
Red V phase
Black W phase

25mm frameless motor wiring



Torque Performance Curves
25mm frameless motor curve


frameless motor.pdf




FAQ – 25mm Frameless Motor


Q1: Is the 25mm frameless motor suitable for continuous operation?
Yes, with proper thermal design, 25mm frameless motor supports continuous duty cycles.


Q2: Can 25mm frameless motor be used in medical devices?
Yes, 25mm frameless motor is widely used in compact medical and laboratory equipment.


Q3: Does 25mm frameless motor include a housing or shaft?
No. 25mm frameless motor is supplied as rotor and stator only for direct integration.


Q4: Can voltage and winding be customized?
Yes, winding and voltage can be tailored for your system.


Q5: Is encoder feedback supported?
Yes, the motor supports external encoder integration.


Q6: Is 25mm frameless motor suitable for OEM projects?
Yes, 25mm frameless motor is specifically designed for OEM integration.



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