All product topicsDivision 1 · Precision Robotics & Motion Control

Frameless torque motor evaluation

Scope stator and rotor requirements against the application envelope, load, duty cycle, thermal path, and controls. Product availability and ratings are confirmed for each project.

Illustrative segmented and solid stator comparison with thermal paths; not a product model or rating.

Project scope and evidence

This is an inquiry-planning page, not a product specification or stock listing. It does not establish a model, rated performance, certification, manufacturing capability, test facility, or compatibility. Those details must be supported by current supplier documents and confirmed for the project before quotation.

What to include in an inquiry

These are requested project inputs, not a statement that a matching product is available.

Max Stator Outer Diameter (OD), Min Rotor Thru-Bore Inner Diameter (ID), and Axial Stack Length (mm)
Continuous Rated Torque (Tr), Peak Torque (Tp), and Rated/Max Speed (RPM)
Available DC Bus Voltage (12V / 24V / 48V / 72V / 310V DC) and Continuous/Peak Current ceiling
Housing heatsink dimensions, cooling method (natural convection, forced air, liquid jacket), and max ambient temperature
Thermistor preference (PT1000, PTC, NTC), Hall sensor PCB needs, and lead wire gauge (#22 / #26 AWG Teflon)
Prototype sample quantity and projected annual OEM production volume

What needs to be checked

Continuous and peak load, speed range, duty cycle, and operating conditions.
Mechanical envelope, mounting, shaft or bore interface, and installation constraints.
Thermal path, cooling, feedback, controls, and required documentation.
Supplier identity, model-specific evidence, commercial scope, and delivery schedule.

Frequently asked questions

Does this page confirm a standard model or current stock?

No. Availability, model ratings, drawings, certifications, test records, supplier identity, and lead time are confirmed for the specific project and stated in the formal quotation.

Is a direct-drive motor suitable for every geared application?

No. The load torque and speed, duty cycle, mounting interface, thermal path, controls, and service environment need to be reviewed before a direct-drive arrangement is selected.

How should I request an engineering review?

Share the application, operating point, interface drawing or existing equipment data, required documentation, quantity, and destination. The supplier and available evidence are confirmed before a quotation is issued.

Frameless torque motor evaluation

Project scope and evidence

What to include in an inquiry

What needs to be checked

Frequently asked questions

Related engineering topics