HT-20C Single-turn Stainless Steel Resolver Transducer

HT-20C Single-turn Stainless Steel Resolver Transducer
  • 304 stainless steel housing and shaft
  • IP67 rated; exceptional durability in harsh environments
  • Ideal for high-shock applications & food grade installations
  • 5/8" stainless steel shaft for superior shaft loading
  • 100% compatible with AMCI's complete line of resolver interface products
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    HT20C drawings PDF version










    HT-20C Single-turn Stainless Steel Resolver Transducer

    Reliability was the chief consideration when AMCI designed the HT-20C stainless steel resolver transducer. The HT-20C is uniquely qualified to withstand the world's harshest environments, including but not limited to steel mills, mining applications, ship loading, and other heavy industry.

    HT-20C performance begins with a 5/8" stainless steel shaft supported by a an over-sized double row sealed bearing. The rotor of the brushless resolver is built on the input shaft, minimizing component count & maximizing reliability. In other words, the rotor & stator assembly are integrated into the unit's design eliminating the use of separate internal resolvers and couplings to the external shaft. The net result is a "bullet-proof" resolver transducer with unmatched durability.

    The HT-20C boasts an IP67 rating and survives washdowns and corrosive environments by design. Connectors to the resolver are made through a standard .50" NPT fitting to a plug-in connector

    Plus, you can specify AMCI's HT-20C into food grade applications with complete confidence. The HT-20C's all stainless steel shaft and body constitute a hard, non-porous material that does not support growth of mold, mildew, or bacteria; providing a hygienic, easy to clean solution for food grade installations.

    AMCI offers a complete line of resolver interface solutions, enabling you to easily configure a resolver-based position feedback system in your favorite PLC, PAC, or network.

    Available Versions

    HT-20C-303: 5/8" shaft, 303 stainless steel, face/foot mount, conduit entry, NEMA 4X
    Price | $1,635/ea

    HT-20C-304: 5/8" shaft, 304 stainless steel, face/foot mount, conduit entry, NEMA 4X
    Price | $1,800/ea

    Note: Pricing is US Domestic only

    Consult the factory for availability

    Contact Sales

    Heavy-Duty Reliability

    The resolver transducer was originally developed to withstand the punishment of military applications, and has since benefited from more than 50 years of continuous use and development. Product packaging plants and stamping press lines are perfect examples of where you might find resolver based systems at work today.

    Builders and system integrators alike agree that the resolver transducer is unsurpassed in its ability to reliably supply rotary position data in the harshest industrial environments.

    The AMCI resolver product line is offered in aluminum or stainless steel construction, and boasts up to an IP67 rating. Solid shaft and hub shaft versions are available, and both types incorporate an oversized double row bearing that supports shaft loads up to 100 lbs. radial / 50 lbs. axial.

    Inside the Resolver Transducer



    Mechanical Specifications

    HT-20C Resolver Transducer
    Shaft loading: 100 lbs. radial/50 lbs. axial maximum shaft loading. Bearing life rated at 2X10^9 revolutions minimum at maximum shaft load.
    Starting torque:8.0 oz. in max @25° C
    Moment of inertia:8.75 X 10ˆ-4 oz-in-secˆ2
    RPM:6,000 max.
    Weight:7 lbs.
    Connector Pinout: not applicableThe HT-20C uses a conduit connection

    AMCI recommends using a pipe thread sealant instead of Teflon tape when sealing all conduit connections. The best sealant to use is application dependent and it is the responsibility of the user to choose the correct sealant for the application.


    HT-20C Resolver Transducer
    Input Frequency:
    5000 Hz
    Rotor Input Voltage:7.0 V rms
    Stator Output Voltage:6.65 V rms
    Transformation Ratio:0.95 ± 5%
    Input Current:30 mArms max.
    Phase Shift:9° max.
    Accuracy:max. error ±7 minutes


    HT-20C Resolver Transducer
    Operating temperature:-40° C to 125° (-40°F to 257°F)
    Shock:50 G's for 11 mSec
    Vibration:15 g's to 2,000 Hz
    Enclosure:refer to mechanical drawings
    (IP67 ratings valid only with working shaft seal)



    Resolver transducers product family overview

    AMCI’s wide selection of resolver transducers, resolver interfaces for PLC based systems, and related accessories provide a complete, quality solution supported by over 25 years of product design, manufacturing, and application experience. Watch the video to learn more about these maximum duty rotary sensors!

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