8645, 8646 Torque sensor

New patented measuring technology, maintenance-free due to to non-contact transfer, extremely low priced, round shafts or square ends

  • Features

    • Measuring range 0 ... 2.5 Nm to 0 ... 500 Nm
    • Very low price
    • Speed up to 5000 1/min
    • Maintenance-free due to non-contact transfer
    • Integrated amplifier
    • High axial and radial load allowed
  • Product data

    Model 8645, 8646
    Principle Rotating
    Measuring range

    0 … ± 2.5 Nm
    0 … ± 5 Nm
    0 … ± 7.5 Nm
    0 … ± 17.5 Nm
    0 … ± 75 Nm
    0 … ± 175 Nm
    0 … ± 250 Nm
    0 … ± 500 Nm

    Signal output

    2.5 V
    ± 2V nominal

    Mechanical connection

    Version with 1 or 2 keyways on both shaft ends acc. to DIN 6885-1A

    Internal and external square acc. to DIN 3121

    Electrical connection 5 pin socket
    Integrated speed measurement No
    Integrated angle measurement No
    Multiple range No
    Protection class IP50
    Range of operating temperature 0 ... +70 °C
    Max. rotary speed

    5000 1/min

    1000 1/min

    Signal transmission Non-contact
    Specific characteristics
    • Very low price
    • Maintenance-free due to non-contact transfer
    • Integrated amplifier
    • High axial and radial load allowed
  • Description

    This torque sensor enables the maintenance-free measurement of static and dynamic torques. It opens up new applications thanks to its low price, ease of use and high insensitivity to lateral forces and bending moments.

    In addition to classic torque measurement on test benches, in production facilities and for monitoring bolting tools, costeffective torque measurement is also possible in applications including:

    • Automotive (steering, gearing, motors)
    • Drilling systems
    • Textile machines
    • Pumps
    • Fitness and workout gears
    • Mechanical conveying technology
    • Household appliances

    This sensor uses a non-contact and maintenance-free technology to convert the torque into an electrical signal.

    The nickel steel shaft is conditioned with a permanent magnetic pattern. Apart from this, no other components such as strain gauges or wiring are required on the shaft.

    The magnetic pattern changes as a result of the torque being measured. This produces a measurement signal that is dependent on the torque.

    Via the integrated amplifier, the sensor supplies an output voltage of 0.5 ... 4.5 V. The zero point is at 2.5 V, which makes it easy to evaluate the direction of torque.

  • Data Sheet & Downloads

    Data sheet
    Operation manual
    Further info
  • Accessories

    pdf 8690 metal bellows coupling
    pdf Bracket

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