Guided product selection
Four distinct motor platforms presented in a consistent format for quick technical comparison and product selection.
ECM
Compact external-rotor EC platforms developed for efficient air movement and integrated fan assemblies.
EC IR
High-efficiency PMSM motor-and-control packages for demanding variable-speed industrial and commercial duties.
EC internal rotor
Efficient internal-rotor EC motors for equipment requiring a conventional shaft output and compact electronic control.
Ultra-flat BLDC
Short axial-length BLDC platforms for direct-drive and space-constrained equipment integration.
Family-specific technical guidance
Select the motor architecture first, then compare supply, power, speed and torque within that family. Frame-size figures are representative starting points; final performance is confirmed against the winding, controller and duty.
How to read the data: Power, speed, torque, efficiency and peak values describe typical configurations or ranges. Their maximum values must not be combined as one simultaneous operating point. Voltage, cooling, winding, control and duty determine the final rating.
ECM Series
Compact external-rotor EC platforms developed for efficient air movement and integrated fan assemblies.
| Frame Size | Supply | Rated Power | Rated Speed | Rated Torque | Efficiency | Protection | Control |
|---|---|---|---|---|---|---|---|
| 90 mm | 200–277 / 380–480 VAC | 170 W | 300–1,800 rpm | 0.9 Nm | Up to 85% | IP54 | Integrated EC |
| 100 mm | 200–277 VAC | 500 W | 300–1,800 rpm | 2.7 Nm | Up to 88% | IP55 | Integrated EC |
| 140 mm | 200–277 VAC | 700 W | 300–1,800 rpm | 3.7 Nm | Up to 89% | IP55 | Integrated EC |
| 160 mm | 200–277 / 380–480 VAC | 1.1 kW | 300–1,800 rpm | 5.8 Nm | Up to 90% | IP55 | Integrated EC |
| 180 mm | 200–277 / 380–480 VAC | 1.5 kW | 300–1,800 rpm | 8.0 Nm | Up to 91% | IP55 | Integrated EC |
| 220 mm | 200–277 / 380–480 VAC | 3.0 kW | 300–1,800 rpm | 15.9 Nm | Up to 92% | IP55 | Integrated EC |
| 250 mm | 200–277 / 380–480 VAC | 4.0 kW | 300–1,800 rpm | 21.2 Nm | Up to 93% | IP55 | Integrated EC |
| 300 mm | 200–277 / 380–480 VAC | 5.0 kW | 300–1,800 rpm | 26.5 Nm | Up to 93% | IP55 | Integrated EC |
Electronically commutated permanent-magnet external-rotor construction
High-efficiency EC operation; premium-efficiency designs available
Integrated or external electronic commutation and variable-speed control
External rotor provides a compact, space-efficient package and direct integration with fan impellers
Wide variable-speed capability with electronic control
Integrated motor protection and thermal management options
Analogue/digital control, speed feedback and communications options depending on controller
Brushless construction eliminates mechanical brush wear
Voltage, power, mounting, shaft/rotor interface, electronics and protection options
EC IR Series
High-efficiency PMSM motor-and-control packages for demanding variable-speed industrial and commercial duties.
| Frame Size | Supply | Rated Power | Rated Speed | Rated Torque | Peak Torque | Efficiency | Feedback |
|---|---|---|---|---|---|---|---|
| 42 mm | 24 / 230 V | 10–60 W | 800–2,500 rpm | 0.04–0.23 Nm | Up to 3× | Up to 75% | Hall / encoder |
| 48 mm | 24 / 230 V | 30–120 W | 800–3,000 rpm | 0.10–0.38 Nm | Up to 3× | Up to 80% | Hall / encoder |
| 56 mm | 24 / 230 V | 80–250 W | 1,000–3,200 rpm | 0.24–0.80 Nm | Up to 3× | Up to 85% | Hall / encoder |
| 80 mm | 220–240 V | 90–750 W | 800–3,000 rpm | 0.30–2.40 Nm | Up to 3× | Up to 88% | Encoder / sensorless |
Permanent-magnet synchronous internal-rotor construction
High efficiency across a broad operating range with low rotor losses
High torque-to-size ratio with strong short-duration peak torque capability
Low rotor inertia options support fast acceleration and precise speed response
Compatible with sinusoidal commutation and field-oriented control (FOC)
Hall sensors, incremental/absolute encoder, resolver or sensorless control options
Precise closed-loop speed and torque control when paired with a suitable drive
Brushless permanent-magnet design for long service life
Winding, voltage, shaft, flange, feedback, brake and connector options
Internal-Rotor EC Range
Efficient internal-rotor EC motors for equipment requiring a conventional shaft output and compact electronic control.
| Frame Size | Nominal Voltage | Rated Power | Typical Rated Speed | Continuous Torque | Peak Torque | Efficiency | Feedback |
|---|---|---|---|---|---|---|---|
| 30 mm | 12–24 VDC | 20–40 W | 4,000–6,000 rpm | 0.04–0.08 Nm | Up to 3× | 75–80% | Hall / sensorless |
| 42 mm | 24 VDC | 40–100 W | 3,500–5,000 rpm | 0.08–0.25 Nm | Up to 3× | 78–84% | Hall / sensorless |
| 52 mm | 24–48 VDC | 80–150 W | 3,000–4,500 rpm | 0.20–0.45 Nm | Up to 3× | 82–86% | Hall / encoder |
| 63 mm | 24–48 VDC | 150–300 W | 2,500–4,000 rpm | 0.40–0.90 Nm | Up to 3× | 84–88% | Hall / encoder |
| 80 mm | 48 VDC | 250–500 W | 2,500–3,500 rpm | 0.80–1.60 Nm | Up to 3× | 86–90% | Hall / encoder |
| 100 mm | 48 VDC | 500–750 W | 2,000–3,000 rpm | 1.60–2.50 Nm | Up to 3× | 88–92% | Hall / encoder |
Brushless electronically commutated internal-rotor construction
Internal-rotor layout provides conventional shaft output and straightforward mechanical integration
No brushes or mechanical commutator; electronically controlled phase switching
Good controllable speed range with stable operation across varying loads
Hall sensor, encoder or sensorless configurations
External or integrated drive electronics depending on application
Long service life with reduced wear compared with brushed DC motors
Smooth brushless operation with low electrical/mechanical maintenance noise
Windings, shafts, leads/connectors, feedback, mounting and gearbox integration
Ultra-Flat BLDC Range
Short axial-length BLDC platforms for direct-drive and space-constrained equipment integration.
| Frame Size | Nominal Voltage | Rated Power | Typical Rated Speed | Continuous Torque | Max Speed | Typical Length | Feedback |
|---|---|---|---|---|---|---|---|
| 20 mm | 24–48 VDC | 8 W | 3,000–11,000 rpm | 0.007–0.025 Nm | Up to 20,000 rpm | 10–20 mm | Hall / sensorless |
| 40 mm | 24–48 VDC | 30 W | 3,000–11,000 rpm | 0.03–0.10 Nm | Up to 20,000 rpm | 15–30 mm | Hall / encoder |
| 60 mm | 24–48 VDC | 80 W | 3,000–11,000 rpm | 0.08–0.25 Nm | Up to 15,000 rpm | 20–35 mm | Hall / encoder |
| 80 mm | 24–48 VDC | 150 W | 3,000–11,000 rpm | 0.15–0.50 Nm | Up to 12,000 rpm | 25–40 mm | Hall / encoder |
| 110 mm | 24–48 VDC | 300 W | 3,000–11,000 rpm | 0.30–1.00 Nm | Up to 11,000 rpm | 30–50 mm | Hall / encoder |
Flat axial-profile BLDC construction; slotted and slotless technologies available
Very short body length for space-constrained installations
High power and torque capability relative to package length
Slotless versions offer very low cogging and smooth torque characteristics
High rotational speeds available from compact frame sizes
Sensored Hall or sensorless commutation options
Open and optimised flat architectures can support effective heat dissipation
Compact rotor designs can provide rapid acceleration and dynamic response
Winding, shaft, connector, Hall/encoder, mounting and integrated electronics options
Configured for the application
Once a frame and motor architecture are identified, SDT confirms these interfaces for the installed duty and production requirement.
Motor, electronics and equipment integration
Six practical decisions help establish the motor, controller and equipment interfaces before a final configuration is released.
Industries & applications
Standard, modified or application-specific
SDT begins with a proven motor-and-control platform where it meets the duty, then considers controlled modification or new development when performance, packaging, environment or production requirements demand it.
Explore MoreDefine the appropriate EC solution
Share the input power source, performance needs, envelope size, application environment and duty cycle.
