Linear and rotary drives
Linear and rotary drives

Compact, high-precision technology

Integrated sensor system solutions are indispensable for the most compact drive possible. BML magnetic encoders, which are available in incomparably small form factors, are suited for direct integration into both linear and rotary drives.

These measuring systems consist of a sensor and a magnetic tape, which features Permagnet technology for an absolutely homogeneous magnetic field. This guarantees high function security, low hysteresis and minimum linearity deviations.

During use, the sensor slides over the encoded tape at a distance of up to 5 mm for completely non-contact operation. The position is available as an absolute or incremental signal.

The tape is available as a strip for linear operations and in ring or disc form for rotary movement.
For additional flexibility you can choose from various interfaces (SSI, BISS-C, SIN/COS, ABZ, IO-Link).

Application examples

  • High-precision position feedback for rotary and swivel drives

    High-precision position feedback for rotary and swivel drives

    The solution

    In order to meet higher safety and environmental standards, process valves need to control the flow with ever greater accuracy and process reliability. If an encoder disc system is integrated in the position controller or swivel drive for position feedback, exact and processsecure flow is ensured.

    The features

    • Rapid startup: High tolerances between sensor and code disc
    • Media flow-through is possible: Sensor position eccentric to the axis
    High-precision position feedback for rotary and swivel drives
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  • Absolute motor feedback in real time

    Absolute motor feedback in real time

    The solution

    With the compact version of the absolute encoder disc, a simple to integrate, highly precise absolute feedback solution is possible for detecting the actual position of motors and drives. The encoder disc system offers you a first-class alternative to traditional magnetic, inductive or optical solutions.

    The features

    • No time consuming reference point moves thanks to the absolute measuring system
    • Rapid startup: Generous distance between sensor and code disc
    • Insensitive to run-out tolerances, short installation times
    Absolute motor feedback in real time
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  • Custom-tailored feedback solutions for linear and rotary drives

    Application-specific encoder engineering

    The solution

    Balluff offers a standard catalog portfolio of incremental or absolute magnetic targets in a variety of form factors including linear tape, radial ring, and off-axis ring or disk with pole spacings of 1, 2, and 5 mm. In many cases, applications can be solved with these off-the-shelf items. In applications where no standard product fits the requirements, Balluff offers customizing services for magnetic targets and track readers.

    The features

    • Wide variety of standard designs for direct integration
    • Customized solutions for application-specific requirements
    Custom-tailored feedback solutions for linear and rotary drives
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  • Custom tailored feedback solutions for linear and rotary drives

    Custom tailored feedback solutions for linear and rotary drives

    The solution

    Magnetic distance and angle measurement systems are ideal for direct integration in linear and rotary drives. This is because they offer you a wide range of magnetic tapes which can be adapted to many different requirements. If standard versions don't fit your application, we can develop application-specific processing electronics for you or integrate a suitable circuit into the existing electronics design.

    The features

    • Can be directly integrated
    • Wide range of magnetic tapes
    Custom tailored feedback solutions for linear and rotary drives
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  • Absolute motor shaft position in real time

    Control motors and drives with absolute precision

    The solution

    Balluff's Nonius 2-track absolute encoder disc technology is gaining a reputation in the motor encoder world as best-in-class. When combined with a high-quality sensing chip, the high-quality rotary disk delivers unparalleled accuracy for motor shaft position feedback. Balluff absolute rotary disk systems find application anywhere that motor shaft position must be known in real time, for example steer-by-wire electric steering systems. Another application for this technology is in torque motors that are used to index a rotating mechanism to a precise angular location, within < ±0.2° absolute error per rotation.

    Compared to alternatives like glass, Mylar, or metal encoder wheels, the advantages of magnetic targets for motor feedback include immunity from contamination by dirt, dusts, and liquids and much higher tolerance of shock and vibration.

    The features

    • Compact 30 mm outer diameter
    • Off-axis sensor location minimizes effects of shaft runout
    • 32/31 2-track Nonius system
    • Pole pitch: 1.28 mm (master track), 0.96 (Nonius / vernier track)
    • Compatible with popular reader chips such as iC-MU (iC-Haus)
    • Aluminum carrier with rubber ferrite magnetic material
    • Temperature range - 40° C to +85° C
    Control motors and drives with absolute precision
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  • High-precision position feedback for rotary valve actuators

    Absolute rotary encoder enables precise electric valve control

    The solution

    Balluff's Nonius 2-track absolute encoder disc technology, when combined with a high-quality sensing chip, delivers unparalleled accuracy for rotary valve position feedback. The system allows indexing of the rotating mechanism to a precise angular location, within < ±0.2° absolute error per rotation.

    Unlike resistive potentiometer solutions, magnetic encoders are non-contact and wear-free for long service life. Other advantages of magnetic encoders for valve position feedback include immunity from contamination by dirt, dusts, and liquids, and higher tolerance of shock and vibration.

    The features

    • Compact 30 mm outer diameter
    • Off-axis sensor location minimizes effects of shaft runout and enables media to flow through the center in some applications
    • 32/31 2-track Nonius system
    • Pole pitch: 1.28 mm (master track), 0.96 (Nonius / vernier track)
    • Compatible with popular reader chips such as iC-MU (iC-Haus)
    • Aluminum carrier with rubber ferrite magnetic material
    • Temperature range - 40° C to +85° C
    Absolute rotary encoder enables precise electric valve control
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    Have any questions? Please give us a call or send us an email. We look forward to hearing from you.