Brushless Rotary Motor - TWR-070-410-1150-3PH

Brushless Rotary Motor,a linear 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.

Features:
• 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

*Specifications are for a system with 3 arc segmented magnet tracks and 1 brushless rotary motor.

To determine your motion profile needs, use our rotary motion calculator.

Continuous Torque Range	70 degrees	1.22 rad
# of Poles	6
Radial Clearance	0.05 in	1.25 mm
Housed w/ Bearings	No
Rotor Inertia	318.6 lb-in²	0.09 kg-m²
Total Mass	33.5 lb	15.2 kg
Moving Mass	2 lb	0.9 kg
Resistance @ 20C	3 ohms
Inductance @ 20C	4 mH
Electrical Time Constant	1.33 msec
Motor Constant	69 in-lb/√watt	7.6 N-m/√watt
Torque Constant	120 in-lb/amp	13.25 N-m/amp
Back EMF	13.25 V/rad/sec
Torque @ 100% Duty	480 in-lb	53 N-m
Power @ 100% Duty	48 watts
Torque @ 10% Duty	1440 in-lb	159 N-m
Power @ 10% Duty	432 watts
Outside Radius	20.5 in	520 mm
Housing Thickness	1.7 in	43.2 mm

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