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FRAMELESS MOTORS
SlimTorq™
Torque Motor
Ideal for medical, defense & commercial applications.
Designed for geared & direct drive applications.
Made possible by FiberPrinting™
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Motor Specifications
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FiberPrinted™
stator
High
Power
High
Precision
Efficient
>2x accelerationSafety & agility
Lightweight
Low noise and vibration
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Halbach rotor
Halbach arrayAlva’s state-of-the-art Halbach array rotor maximise the magnetic field density
Composite sleeveA composite sleeve assures failure free operation in any condition
Large through hole
Alva’s slotless motor technology results in a thin stator & rotor compared to both slotted motors & other slotless motors, allowing a large inner diameter of the rotor. Other components, for example gears, can more easily be placed inside the frameless motor, to increase overall system compactness.
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Our industries
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Frequently Asked Questions
Ask a questionThere are three general concepts for mechanical integration of the frameless motors.
- Clamping
- Adhesion
- Interference fit
All three has their inherent advantages & considerations, please read more under the Mechanical Integration section of the Product Catalog.
The SlimTorq™ motors are of the three-phase BLDC type & can be driven with most off-the-shelf controllers. The motors can be driven in trapezoidal, FOC, sinusoidal mode & with or without sensor feedback. Special considerations need to be taken regarding the switching frequency due to low inductance of the motors. Please read more under Choosing a Motor Drive section of the Product Catalog.
Most of the SlimTorq™ motors can be ordered with a temperature sensor as an optional feature. Each specific product page in the Product Catalog specifies if it’s available with temperature sensor option under the Temperature Option row. Please the see Ordering Alva Motors section in the Product Catalog to see how you configure your product with a temperature sensor.
Most of the SlimTorq™ motors can be ordered with a temperature sensor as an optional feature. Each specific product page in the Product Catalog specifies if it’s available with temperature sensor option under the Temperature Option row. Please the see Ordering Alva Motors section in the Product Catalog to see how you configure your product with a temperature sensor.
The easiest way to select correct motor for your application is to use our Product Selector. Insert you requirements in the Product Selector and it will find precisely the right motor for you. It will also allow you to fully configure the motor and order it. We are happy to help if you desire personal assistance to select the right motor, just contact us on sales@alvaindustries.com.
Depending on the version of the motor, the lead time may vary. As a general rule of thumb, for units that are standard configurations, the lead time for small volumes (1-5 units) is around 6-8 weeks. For bigger volumes or small customizations the lead time may change, please reach out to us at sales@alvaindustries.com or call us.
The motors can be configured perfectly to your application. There are many sizes to choose from and each size have many options that can be configured to match with you needs.
Almost all the motor come in two main configurations: Lite and Max. Lite is the lightweight option and Max has been maximised in terms of motor constant and torque output.
Each motor has multiple winding configurations to align with your required max-speed. The motors can be configured in Star(Y) and Delta(D), and in different number of series-turns. The cables exit orientation also come in two variants: axial and radial.
The motors can be equipped with temperature sensors and different wire gauges.
To understand how to configure your product please see the Configured To Your Needs section of the Product Catalog and to simplify the process check out our Product Selector.
Please contact us at sales@alvaindustries.com if there isn’t a configuration that meets your needs. Our FiberPrinting™ technology allows us to quickly develop custom motors according to your requirements.
No. Alva’s manufacturing methods, lead by the FiberPrinting™ technology, are comparable in cost and price with motors with similar characteristics (thin, light, cogging free slotless frameless motors).
Typically yes, slotless motors tend to be more expensive than slotted motors. The reason lies on the manufacturing methods required to manufacture the windings and the need for more powerful and heavier magnets. However FiberPrinting™ and Alva’s methods of manufacturing our Halbach Array rotors, can be quite competitive with slotted solutions.