Mosrac direct drive torque motors
u76 series bldc direct drive motor

U76 Series Brushless DC Frameless MotorsOuter diameter ( OD ) : 76mm

279-648 W | 0.89-2.06 Nm | 3000-6000 rpm | 48 V


Our inrunner brushless frameless torque motors are the right motors for your systems. They offer:


  • ▪︎ Direct drive brushless motor

  • ▪︎ Low cogging torque

  • ▪︎ High-cost performance

  • ▪︎ Low-speed and high-speed windings


Have questions? Contact a Mosrac expert.


Specification

Main ParametersU7618U7623U7636
Voltage(VDC)484848
Rated Output(W)280386.71648
Rated torque(Nm)0.891.232.06
Instant Max Torque(Nm)2.23.435.6
Rated Current(Arms)51013.5
Instant Max Current(Arms)153040
Rated Speed(rpm)300030003000
MaxSpeed(rpm)600060005000
Torque Parameter(Nm/Arms)0.180.120.15
Rotor inertia 10-4kg.m²0.440.580.98
Back EMF coefficient(Vrims/rad/s)779
Resistance(Ω)1.270.210.2
Inductance(mH)0.90.20.26
Pole-pairs number(2P)101010
Weight(kg)0.2450.3330.606
Motor height(mm)L11115.528.5
L21014.527.5
L318.623.136.7

Drawing

OD 76mm series Frameless Direct Drive Torque Motors drawing

Additional Info


The U76-Series frameless stator-rotor installation kits developed by Mosrac's R&D team utilize integrated engineering, built and used in the most demanding environments; the motors offer market-leading torque density, exceptional precision, and outstanding overload capacity, all within an ultra-compact space.


Benefits:


  • ▪︎ High torque torque-to-inertia ratio for quick responsiveness and precision control

  • ▪︎ High torque density in a space-saving package

  • ▪︎ Large rotor interior diameter for convenient cable routing

  • ▪︎ Standard lead lengths

  • ▪︎ Low cogging torque for a smooth, steady operation

  • ▪︎ Constructed with corrosion-inhibitive materials

  • ▪︎ Supported by rigorous testing for performance and reliability

  • ▪︎ Manufactured by the world's most comprehensive electric motor manufacturer

  • ▪︎ On-hand Inventory availability and short lead times

  • ▪︎ Class F insulation

  • ▪︎ CE, RoHS, REACH Compliant

  • ▪︎ Custom Designs Available


Applications:


  • ▪︎ Machine tool

  • ▪︎ Packaging

  • ▪︎ Robotics

  • ▪︎ Semiconductor

  • ▪︎ Automotive


When to Use:


  • ▪︎ Substantial cost savings

  • ▪︎ Decreased mechanical complexity

  • ▪︎ Enhanced flexibility in design

  • ▪︎ Exceptional performance in a compact space

  • ▪︎ Improved dynamic response

  • ▪︎ Minimum motor size in each application

  • ▪︎ Low cogging for smooth operation

  • ▪︎ Low inertia allows for quicker acceleration


Download

  • U7618 Torque Motor Catalog.pdf

    OD: 76mm|Height: 18.6mm

  • U7623 Torque Motor Catalog.pdf

    OD: 76mm|Height: 23.1mm

  • U7636 Torque Motor Catalog.pdf

    OD: 76mm|Height: 36.7mm

  • U76 Series Brushless DC Frameless Motors Catalog.pdf

    OD: 76mm|Height: 18.6~23.1~36.7mm optional

  • Direct drives need high-quality position signals to ensure optimal performance. Perfect measuring signals can enhance the surface quality of machined workpieces, reduce the machine frame's vibrations, minimize velocity-dependent motor noise, and prevent excessive heat generation in the motor.


    Mosrac recommends using a magnetic encoder to enhance the accuracy, speed stability, and thermal behavior of direct drive axes. Because there is no mechanical transmission between the encoder and the feed unit, the position signals are not susceptible to inaccuracies or delays.

    Custom combinations are available on request and contact us.



    Application case

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    Torque motors for robotics applications

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    Torque motors for consumer electronics application

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