SlimTorq™
Precision & Performance Unified
SlimTorq™ is a slotless thin-section frameless motor series for high-precision applications. The SlimTorq™ motor series has zero cogging, high torque density, no saturation & large through-hole.
-50%
Lower mass.
Zero
Cogging Torque.
+100%
Higher Torque Density.
Large through-hole
Easy integration in application & compact design.
FiberPrinted™ Stator
High copper fill factor ensures maximum performance.
Halbach Rotor
Maximises the magnetic field density.
SlimTorq™ torque motors are slotless & therefore has virtually zero cogging torque & minor torque ripple. Making them the perfect choice for high-precision applications that also require high-performance.
The removal of the iron-teeth in the SlimTorq™ motors result in a stator &rotor that’s astonishingly thin & light.The motors feature a large through hole that allows for design of incredible compact actuators.
Alva’s proprietary manufacturing technology allows for maximised copper fill factor & non-skewed stator windings, which result in a motor-constant & torque-density rivalling even the best slotted motors.
Motor Specifications
| Header | Header | Header | Header |
|---|---|---|---|
| Cell | Cell | Cell | Cell |
| Cell | Cell | Cell | Cell |
| Cell | Cell | Cell | Cell |
| Cell | Cell | Cell | Cell |
Lightweight
Large ID
SlimTorq™
Lite
The Lite version is designed & optimised to be as light as possible while sustaining a high torque-density. It’s a good choice for weight sensitive applications. It allows the added value of a large through-hole to simplify mechanical integration.
High Motor Constant
High Conti. Torque
SlimTorq™
Max
The Max version is designed & optimised for maximum performance, i.e. with the highest possible torque & motor-constant the space envelope allows for. It’s a good choice for applications that require the maximum performance in combination with compactness.
FiberPrinted™
stator
The motors are based on the proprietary production technology FiberPrinting™.
High Power
>2x acceleration
High Precision
Lightweight
Efficient
Low noise & vibration
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Halbach rotor
Every component is designed for maximum performance & reliability including the rotor.
Halbach array
Alva’s state-of-the-art Halbach array rotor maximizes the magnetic field density.
Composite sleeve
A composite sleeve assures failure free operation in any condition.
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Large
through hole
Alva's slotless motor technology results in a thin stator & rotor compared to both slotted motors & other slotless motors, allowing a larger inner diameter of the rotor. Other components, for example gears, can more easily be placed inside the frameless motor, to increase overall system compactness.
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 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.
Due the inherent simplicity & flexibility our manufacturing technology FiberPrinting™ we can offer fully custom solutions for your application. Please contact us at sales@alvaindustries.com to learn more.
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.
There 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 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.
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).
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.
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.
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