Zhaowei Machinery & Electronics (003021.SZ): Humanoid Robotics Exposure

Where it fits in the robot

Miniature drive systems combine coreless motors and compact gearboxes for dexterous hands. Zhaowei documents robotic applications and integrated hand products.

What the evidence establishes

Humanoid evidence

The product page shows coreless-motor and planetary-gearbox hand actuators and multi-DOF hands with explicit humanoid applications.

An explicit humanoid product, development program, application, or partnership. This does not establish revenue, market share, or production volumes.

Component role	Micro-drive systems and dexterous hands
Evidence	The product page shows coreless-motor and planetary-gearbox hand actuators and multi-DOF hands with explicit humanoid applications.
Primary source	Zhaowei Machinery & Electronics — supporting disclosure Company or official disclosure; vendor claims are attributed to their source.
Checked	2026-09-19. This is the research review date, not the source publication or quote time.

Keep in perspective

Product specifications do not prove mass-volume adoption. A shares and 2692.HK are the same issuer, counted once.

Specialist business exposure. This describes the breadth or role of the business; it is not an investment rating. A robotics product or development announcement does not by itself establish material humanoid revenue, market share, or future returns.

Connections to the assembly

These links explain the technology relationship. The model is illustrative and does not represent an actual manufacturer’s bill of materials.

Reduction stage

Gearing reduces speed and increases output torque. This illustrative stage is planetary; humanoids also use strain-wave and cycloidal designs.

Scope of the company links: Documented planetary gearbox families match this illustration (including Nidec ABLE and Zhaowei miniature drives). Strain-wave and cycloidal suppliers appear in the broader Joints & gears sector.

Internal ring gear

The fixed outer ring has inward-facing teeth. It reacts torque into the joint housing.

Scope of the company links: These companies make complete planetary reducers incorporating ring gears; standalone ring-gear supply is not established.

Input sun gear

The motor turns this central gear. It drives the three planet gears that mesh with the fixed ring.

Scope of the company links: Planetary gearbox integration, including the central sun gear. Strain-wave products do not use this mechanism.

Planet gears & pins

The planet gears share the load while rotating around the sun. Tooth counts determine the reduction ratio.

Scope of the company links: A planetary reducer product match. This is not a claim of standalone planet-gear or pin supply.

Output carrier

The carrier supports the planet pins and delivers the slower, higher-torque rotation to the robot link.

Scope of the company links: Complete planetary transmission integration, rather than a verified standalone carrier contract.

Miniature motor & drive

A compact motor and drive regulate the finger’s force and position.

Scope of the company links: Miniature motors or integrated hands, plus hand motor-control electronics. Chip suppliers do not manufacture the mechanical finger.

Phalanges & articulated joints

Linked finger segments pivot around pins to conform to an object’s shape.

Scope of the company links: Complete dexterous hands and integrated miniature drives. Wonik Holdings provides exposure through its robotics subsidiary, rather than a pure-play listed hand maker.

Related research

Companies with overlapping sector exposure. Their products and evidence may differ; this is not a list of equivalent investments.

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Zhaowei Machinery & Electronics