Knee Actuator
AssemblyHigh-torque harmonic-geared knee actuator with dual encoders. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Knee Actuator parts and their functions
6 top-level parts · 151 parts in total · full bill of materials below
| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Frameless BLDC Motor 5 parts | 1× | Housingless brushless rotor/stator pair integrated directly into the joint. |
| 2 | Harmonic Reducer 4 parts | 1× | Strain-wave gear giving high reduction with zero backlash. |
| 3 | Encoder | 2× | Motor + output encoders |
| 4 | Gate Driver Board 3 parts | 1× | Circuit board carrying the gate driver ICs, isolation, and protection that switch the power modules of an inverter or servo drive. |
| 5 | Power MOSFET | 6× | Power MOSFET: a voltage-controlled semiconductor switch that turns high currents on and off at high speed in converters and motor drives. |
| 6 | Ball Bearing | 2× | Deep-groove radial ball bearing. |
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Bill of materials for Knee Actuator
6 top-level lines · 25 rows shown · 151 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Frameless BLDC Motor 5 parts | humanoid-robot-frameless-motor | 1× | 1 | 50 | assembly |
| 1.1 | Stator Assembly 3 parts | stator-assembly | 1× | 1 | 3 | assembly |
| 1.1.1 | Stator Core (laminations) | stator-core | 1× | 1 | · | part |
| 1.1.2 | Copper Winding | copper-winding | 1× | 1 | · | part |
| 1.1.3 | Slot Insulation | stator-insulation | 1× | 1 | · | part |
| 1.2 | Rotor Assembly 4 parts | rotor-assembly | 1× | 1 | 19 | assembly |
| 1.2.1 | Rotor Shaft | rotor-shaft | 1× | 1 | · | part |
| 1.2.2 | Rotor Core | rotor-core | 1× | 1 | · | part |
| 1.2.3 | Neodymium Magnet | neodymium-magnet | 16× | 16 | · | part |
| 1.2.4 | Ball Bearing | ball-bearing | 1× | 1 | · | part |
| 1.3 | Neodymium Magnet | neodymium-magnet | 24× | 24 | · | part |
| 1.4 | Copper Winding | copper-winding | 1× | 1 | · | part |
| 1.5 | Hall Sensor | hall-sensor | 3× | 3 | · | part |
| 2 | Harmonic Reducer 4 parts | humanoid-robot-harmonic-reducer | 1× | 1 | 4 | assembly |
| 2.1 | Wave Generator | humanoid-robot-wave-generator | 1× | 1 | · | part |
| 2.2 | Flexspline | humanoid-robot-flexspline | 1× | 1 | · | part |
| 2.3 | Circular Spline | humanoid-robot-circular-spline | 1× | 1 | · | part |
| 2.4 | Ball Bearing | ball-bearing | 1× | 1 | · | part |
| 3 | Encoder | encoder | 2× | 2 | · | part |
| 4 | Gate Driver Board 3 parts | gate-driver-board | 1× | 1 | 87 | assembly |
| 4.1 | Bare PCB | pcb-bare | 1× | 1 | · | part |
| 4.2 | Gate Driver IC | gate-driver-ic | 6× | 6 | · | part |
| 4.3 | SMD Passive (R/C/L) | smd-passives | 80× | 80 | · | part |
| 5 | Power MOSFET | mosfet | 6× | 6 | · | part |
| 6 | Ball Bearing | ball-bearing | 2× | 2 | · | part |
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Where the knee actuator is used
1 product across 1 domain contain it, directly or inside a sub-assemblyUsed in 1 assembly
Sourcing: possible vendors
Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $2–$500. How estimates work| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
|
🇨🇳Inovance
inovance.com ↗
|
Shenzhen, CN | Drives & motion control | 500 units | 10–14 wks |
| sonacomstar.com ↗ | Gurugram, IN | EV driveline & motors | 500 units | 10–14 wks |
| broad-ocean.com ↗ | Zhongshan, CN | Electric motors | 500 units | 10–14 wks |
| nidec.com ↗ | Singapore | Motors, regional ops | 500 units | 10–14 wks |
| bosch.in ↗ | Bengaluru, IN | Automotive components | 500 units | 10–14 wks |