Products
Frameless BLDC Servo Motors
Frameless BLDC servomotors consist solely of the rotor and stator assembly without a traditional housing or frame. They can be directly integrated into mechanisms, allowing for flexible adaptation to various housing, bearings, and feedback devices. This facilitates high integration of terminal products and reduces their size.
Using a multi-slot, multi-pole design creates high torque density and low cogging torque output for smoother operation. Vacuum potting technology with high thermal conductivity encapsulation resin is used to enhance heat dissipation and reduce temperature rise. They can achieve very high speed and acceleration, making them well-suited for robotics applications where precise positioning and repeatable movements are important.
Key Features
- Direct integration - rotor/stator components fit your own housing, bearings, and feedback devices
- Low inertia design for fast acceleration, tight control, and precise positioning
- Custom windings and sizes to match speed, voltage, and torque requirements
- Quiet, smooth operation with low cogging torque from multi-slot, multi-pole design
- High torque density - maximum power in the smallest possible footprint
- Vacuum potting with high thermal conductivity resin for enhanced heat dissipation
- Durable construction with premium materials for demanding conditions
Specifications
| Motor type | Frameless BLDC (inner and outer rotor configurations) |
|---|---|
| Design | Multi-slot, multi-pole for high torque density and low cogging |
| Thermal management | Vacuum potting with high thermal conductivity encapsulation resin |
| Integration | Direct mount into customer housing, bearings, and encoders |
| Customization | Custom windings, sizes, and voltage/speed/torque profiles |
Configuration Options
- Custom windings matched to your voltage, speed, and torque profile
- Inner rotor and outer rotor frameless configurations
- Integration with customer-selected encoders and feedback devices
- Custom shaft and mounting interfaces for joint assemblies
- Prototype through production volume programs
Applications
- Humanoid robots
- Collaborative robots (cobots)
- Medical surgery and rehabilitation robots
- Quadruped robots
- Industrial robotic arms
- SCARA robots
Outer Rotor Frameless Motor
Outer rotor frameless motors place the magnetic rotor on the outside of the stator, enabling direct integration into joint housings and compact robotic assemblies where the rotating element forms part of the mechanism structure.
Gallery
FAQ
- What is a frameless servo motor?
- A frameless servo motor consists of only the rotor and stator - no housing, shaft, or bearings. The OEM integrates these components directly into their mechanism, enabling tighter packaging and higher system-level torque density.
- Can SEI customize windings for my voltage and speed requirements?
- Yes. SEI offers custom windings and sizes to match your exact voltage, speed, and torque profile. Contact our engineering team with your application parameters.
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