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115mm Frameless Torque Motor for Heavy-Duty Direct Drive Applications


  • 115ZWC37X-1

  • Modar Motor

  • 115mm

  • 570W

  • 3.9N.m

  • 48V

  • 100% pure copper

  • 2

  • about 30 days

Availability:

Product Overview of 115mm Frameless Motor

The 115mm frameless motor is a high-torque direct-drive solution engineered for heavy-duty industrial and robotic systems. Its large frame size and optimized electromagnetic design enable extremely high torque output while maintaining smooth motion and precise control.

115mm frameless motor series is ideal for applications that demand robust performance, high reliability, and long-term continuous operation.


high torque frameless motor


Key Features

  • Extremely high torque output capability

  • Designed for heavy-duty direct-drive systems

  • Smooth torque delivery with low ripple

  • Advanced thermal and electromagnetic design

  • Optimized for large industrial assemblies




Typical Applications


Application Positioning

The 115mm frameless motor targets heavy-duty direct-drive applications that require very high torque and long-term operational stability.


Typical Industries & Use Cases

115mm frameless motor is widely applied in heavy industrial robots, automated production lines, large rotary indexing tables, and high-load positioning systems.

  • Heavy-duty industrial robots

  • Automated manufacturing and assembly systems

  • Large rotary tables and positioning platforms

  • Medical rehabilitation and assistance equipment


Integration Value

115mm frameless motor's large diameter enables powerful direct-drive integration, eliminating gear reducers and improving torque transmission efficiency.


Technical Specifications (115mm Frameless Motor Series)

The following technical data applies to the 115mm frameless motor 115ZWC37X-1.


Motor Characteristics
Motor part number 115ZWC37X-1
Stator outer diameter mm 115±0.027
Rotor inner diameter mm 74+0.03
Number of slots - 27 
Pole pairs - 15 
Phase-to-phase resistance 0.122 
Phase-to-phase inductance mH 0.477 
Winding connection method - Star connection
Insulation class - F
Duty type - S2
Feedback method - Hall sensor
Commutation angle - 120o
Insulation strength (Withstand voltage) - 1200VAC/1s/3mA
Insulation resistance - 50MΩ/500VDC
Stator weight g 815 
Rotor weight g 245 
No-load speed RPM 1750 
No-load current A 1.8(REF)
Rated voltage VDC 48 
Rated power W 570 
Rated torque N·m 3.9 
Rated speed RPM 1400 
Rated current A 14.1 
Torque constant Nm/A 0.281 
Back-EMF constant (effective value) Vrms/Krpm 20.8 
Peak torque N·m 12.7 
Peak current A 47 
Rotor inertia g·cm² 3930 


Dimension Drawing
115mm frameless motor 115ZWC37X-1

115ZWC37X-1 115mm frameless motor drawing



Lead-out type Lead-out color Function
UL1332 AWG14 Yellow U phase
Red V phase
Black W phase

115mm frameless motor wiring



Torque Performance Curves
115ZWC37X-1 115mm frameless motor curve


frameless motor.pdf




FAQ – 115mm Frameless Motor


Q1: Is the 115mm frameless motor suitable for heavy industrial applications?

Yes, 115mm frameless motor is specifically designed for high-load and heavy-duty systems.


Q2: Can 115mm frameless motor replace traditional servo motors with gearboxes?

Yes, particularly in applications that benefit from direct-drive performance.


Q3: Is liquid cooling required?

Liquid cooling is optional and depends on operating load and duty cycle.


Q4: Can torque and voltage be customized?

Yes, winding and electrical characteristics can be tailored.


Q5: Is 115mm frameless motor suitable for long-term operation?

Yes, 115mm frameless motor is designed for continuous industrial use.


Q6: Do you support long-term OEM supply projects?

Yes, we provide long-term production and engineering support.


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