Phase Motion Control

TKH Torque Motor
Super high-torque density in a compact, frameless design

The TKH torque motors embody the next generation of frameless permanent magnet synchronous motors (PMSM) — designed for direct drive precision and engineered for lasting reliability.
Developed and manufactured by PHASE in Italy, the TKH series delivers remarkable torque density, silky-smooth rotation, and outstanding energy efficiency in an ultra-compact format.

TKH Super High torque density, thin ring torque motor series

Super High torque density, thin ring torque motor series

Entirely designed and manufactured in Italy, the TKH series reflects PHASE’s commitment to engineering excellence. A streamlined production chain, full in-house control, and flexible customization ensure faster delivery and the highest quality standards — from concept to integration.

Designed for outstanding performance in torque density, low to medium speed, and rapid positioning. Equipped with cutting-edge technology like an innovative electromagnetic circuit and magnet dovetail positive locking, the TKH Torque Motors Series excels in demanding applications needing both slow and fast positioning. Accurate magnetic circuit design and strict manufacturing tolerances guarantee minimal cogging ripple and smooth torque delivery.

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TKH Brochure 22.56 MB 15034 downloads

Super High torque density, thin ring torque motor series Designed to deliver exceptional...
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    Phase Motion Control
    TKH “frameless” motors

    WHY TKH?

    Every detail of the TKH design has been refined to achieve uncompromising performance.

    Here’s what makes it stand out:

    • > 20% torque increase over TK series
    • Highest continuous torque density
    • Super thin ring design
    • NO snubber required
    • Improved resistance to thermal cycling with new class H encapsulant
    • Unmatched thermal efficiency for temperature sensitive, precision machines
    • Magnetic design optimized for linearity in overload
    • Low cogging and ripple torque for smooth operation
    • Optimized water cooling circuit with corrosion resistance coating
    • High density winding, lower loss and better heat transfer compared to conventional designs
    • UL listing option, available in Class F
    • Surge hardened winding insulation for high voltage operation up to 750 Vdc
    • Lightweight and slim design for easy integration
    • Fast delivery with modular design
    • Made in Italy

    The highly modular design is optimized to guarantee faster availability of parts, reducing the risk of stock shortages and downtime .

    KEY PERFORMANCE AND RANGE

    • 11 different TKH sizes, split into 100+ variants
    • Active stator length stack up to 200 mm
    • External frame diameter options from 230 mm to 1015 mm
    • Internal rotor / shaft diameter OPTIONS from 135 mm to 865 mm
    • Continuous rated torque values ranging from 120 Nm to 20.000 Nm
    • Peak torque up to 30.400 Nm
    TKH Torque Motors
    TKH CONFIGURATOR

    BACK TO ITALY

    The TKH series is entirely made in Italy with a local supply chain, ensuring a shorter, more reliable supply chain, increased flexibility, and faster response times.

    Highly modular design ensures quicker availability of parts, minimizing the risk of stock shortages and downtime.

    TKH Made in Italy

    CHARACTERISTICS

    Engineered for uncompromising precision and endurance, the TKH torque motor series merges advanced magnetic design with exceptional mechanical balance. Each component is carefully crafted to deliver maximum torque density, smooth rotation, and long-term reliability in the most demanding direct-drive systems.

    High Torque Density

    The optimized magnetic geometry and high-density winding technology allow outstanding torque output within an extremely compact structure.

    Compact Frameless Design

    The frameless configuration simplifies mechanical integration, minimizes space, and eliminates mechanical backlash — ideal for precision motion systems.

    Exceptional Smoothness

    Careful optimization of the magnetic field ensures low cogging torque, silent operation, and superior rotational uniformity at every speed.

    Thermal Stability

    Efficient heat dissipation and the use of high-grade materials keep performance stable under continuous duty, enhancing durability and precision.

    Made in Italy

    Entirely designed and manufactured in Italy by PHASE Motion Control, ensuring strict quality control, fast customization, and full supply reliability.

    Technical Design

    The TKH motor structure combines a high-efficiency epoxy-encapsulated stator with rare-earth permanent magnets to ensure magnetic stability and lasting reliability.
    Each element — from stator windings to rotor geometry — contributes to balanced torque, reduced losses, and optimal thermal performance.

    CHOOSING THE RIGHT TKH MOTOR FOR YOUR APPLICATION

    Varied diameters, stack lengths, and windings in TKH electric motors cater to specific requirements. Special configurations are available but may take longer for delivery. TKH motors come as separate stator and rotor units, with pre-assembled units available upon request.

    TKH torque motors size summary – diameters and stack lengths

    It’s important to ensure that the correct code is used in order to receive the correct motor specifications and configurations for your application.

    QUICK SELECTION: GUIDE Available torque and diameter range

    TKH Motors provides diverse torque and diameter options to suit different application requirements.

    Here are the available options:

    • Outside diameters ranging from 230 to 1015 mm
    • Different stack length modules in finite steps ( 50 – 100 – 150 – 200 mm)
    • Winding configurations for different torque constant

    Custom stack lengths by steps of 25mm and custom windings are available on demand.

    TKH general coding system – direct drive frameless torque motor