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COTS Rotors & Stators.

Rotor and stator sets designed to meet the high power-density requirements of today's industrial and mobility devices. Available as standard, modified (mCOTS), and fully customized products.

Built for power density.

Three wound stator assemblies of different diameters, showing copper windings and laminated cores.
Standard · mCOTS · Custom

Configurations that drop into your existing design.

Our line of COTS stator and rotor sets covers diameters from half an inch to 36 inches and power levels from 0.5 W to 150 kW. Every set is offered in configurations that facilitate integration into existing designs — frameless as standard, with housed configurations available.

When a catalogue part is close but not exact, the same sets are available as modified COTS (mCOTS) or fully customized products to meet a wide variety of application requirements.

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The envelope.

Diameter
0.5 – 36 inches
Power levels
0.5 W to 150 kW
Speed
To 120,000 RPM
Temperature range
−80 ºC to 315 ºC
Configuration
Frameless (housed configurations available)
Feedback
Sensor-less design, available with optional Hall-effect sensors
Environment
Sealed / submersible / autoclavable options
Availability
Standard, modified (mCOTS), and fully customized

Why designers spec them.

— 01

Lightweight, high power density

Maximum output from minimum mass and volume — the defining requirement of modern industrial and mobility devices.

— 02

Extreme shock and vibration tolerant

Built to keep running in environments that destroy lighter-duty parts.

— 03

High stiffness, low rotor inertia

High mechanical stiffness with low rotor inertia for efficient control and smooth, accurate motion.

— 04

Easy integration

Frameless sets sized to drop into existing designs without re-engineering the surrounding assembly.

Sleeved rotor assembly on a machined stainless shaft.
Sleeved rotor assembly
Housed motor configuration with finned heat-sink housing and splined output shaft.
Housed configuration

Standard sets, on the shelf.

The following standard rotor and stator sets are in stock. Many other options are available on demand.

Part no. Description "Z" max Lead wire gage "L" + .500 "R" + .005
STR-FL-0248-01 O&M DWG, 1105/6 STD rotor and stator set .570 18 12 0.500
STR-FL-0248-02 O&M DWG, 1105/12 STD rotor and stator set .570 18 12 0.500
STR-FL-0248-03 O&M DWG, 1110/3 STD rotor and stator set 1.070 16 12 1.000
STR-FL-0248-04 O&M DWG, 1110/6 STD rotor and stator set 1.070 18 12 1.000
STR-FL-0248-05 O&M DWG, 1115/2 STD rotor and stator set 1.570 14 12 1.500
STR-FL-0248-06 O&M DWG, 1115/4 STD rotor and stator set 1.570 18 12 1.500
Dimensioned outline drawing of a stator and rotor set showing the Z, L, and R reference dimensions.
Reference dimensions

Need a different winding, diameter, or environment rating? Request a quote with your application requirements.

Have a frame size in mind?

Request a quote