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Limited Angle Torque Motor - TWR-070-410-1150-3PH

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Limited Angle Torque Motor,a rotary motor,product,TWR-070-410-1150-3PH The TWR-070-410-1150-3PH rotary 3-phase brushless motor, also known as a rotary servo motor, is a direct drive motor that is ideal for limited or unlimited, closed loop servo, rotary motion applications. It can generate a continuous/peak torque of 480 in-lbs [53 Nm]/1440 in-lbs [159 Nm]. It has been designed to have a 70° rotation and operate on a 20” (500 mm) radius, but additional modular magnet tracks (33° each) can be added to increase angular displacement. It is capable of very precise position, velocity, and acceleration control when coupled with a rotary encoder for position feedback. The vacuum encapsulated moving motor coil assembly moves through a gap in the long "U" shaped magnet assembly. A customer supplied bearing system is required to guide the moving coil assembly and to maintain a .050" [1.25 mm] clearance between the magnet and the coil assembly. There is no attractive force between the motor coil and the magnet assembly. The 3-phase motor coil assembly can be commutated trapezoidally using integral Hall Effects or sinusoidally using software commutation in conjunction with the appropriate amplifier or motion controller and encoder feedback. The power to the motor (from a brushless servo amplifier) is supplied via a high-flex motor power cable. Custom motors can be designed to fit customer specific application needs. Larger motors with higher torques are available, consult the factory for details and drawings.

• Zero cogging
• High speed and accelerations of light loads
• Low moving mass
• Multiple motors coils inside a single magnet assembly
• Uses standard 3-phase brushless amplifier

Product Drawing
Device TypeWR
Continuous Torque Range70 degrees1.2 rad
# of Poles6
Radial Clearance.050 in1.27 mm
Housed w/ BearingsNo
Total Mass564 oz15989 grams
Resistance @ 20C2.86 ohms
Inductance @ 20C3.4 mH
Torque Constant1920 in-oz/amp1356 N-cm/amp
Torque @ 100% Duty7680 in-oz5300 N-cm
Current @ 100% Duty4 amps
Torque @ 10% Duty23040 in-oz15900 N-cm
Current @ 10% Duty12 amps
Outside DiameterR20.5 inR520 mm
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