Categories / Servo motors and drives
Servo motors and drives
A servo system is motor, drive and encoder, and it sets joint response, accuracy and energy use. Robots also use frameless torque motors, coreless motors and integrated joint modules.
General-purpose servos in China are now led by domestic suppliers, but robot-specific high power density and low cogging variants remain the contested segment.
The barrier is magnetic circuit design, encoder accuracy, drive algorithms and batch consistency, not any single component.
Basis: Industry-structure assessment (Tier C, our own judgement); contains no hard numbers.
Where the barrier sits
- Cogging torque and torque ripple
- Encoder resolution and repeatability
- Drive current-loop bandwidth and overload capability
- Batch consistency: can units from different lots be interchanged in one assembly
Price and lead time
Price band pending. Must state: power class, whether drive and encoder are included, communication protocol, and order quantity band.
| Data sheet | Status | What the basis must cover |
|---|---|---|
| Model and power comparison | Pending | Continuous torque / peak torque / speed |
| Cost breakdown | Pending | Motor / drive / encoder / harness / tax |
| Lead-time distribution | Pending | Standard and custom reported separately |
Who makes it
| Company | Listed / code | Field completeness |
|---|---|---|
| Inovance Shenzhen · Shenzhen–Dongguan | SZSE ChiNext 300124 | 3 / 13 |
| Leadshine Shenzhen · Shenzhen–Dongguan | SZSE 002979 | 4 / 13 |
Ranking follows field completeness and source tier, not payment. Open any company to see how far each of the thirteen fields has been verified.