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Understanding the VAXOR-MOTOR Approach to Robotic Hand Actuation

For engineers researching a VAXOR-MOTOR robotic hand actuator datasheet, the central question is usually straightforward: can a single actuator platform deliver the torque density, precision, and compact footprint required for dexterous robotic hands without sacrificing reliability? VAXOR-MOTOR, operating under the AXOR brand, positions itself as an integrated micro-actuation solutions provider, and its technical documentation reflects a design philosophy built around three combined technologies: axial flux motors, micro cycloidal gear reducers, and non-contact absolute magnetic encoders. This architecture directly targets an industry pain point identified in the company’s own materials—the need for high torque density, precision, and compact footprints in micro-manipulation and high-load robotic applications.

Core Technical Foundation

The company’s differentiated advantage rests on how these three components work together. By integrating axial flux motors with micro cycloidal reducers, the platform achieves higher torque density and rigidity than would be possible with a single-technology approach. On the electromagnetic side, VAXOR-MOTOR optimizes designs so that phase imbalance is controlled within 5% for ultra-micro motors, a metric the company states directly supports higher yield and power density during production.

Several platform-level technical metrics define the actuator family covered in the datasheet:

• Actuator diameters ranging from Φ16mm to Φ30mm, covering a spread of load and integration requirements.
• Gear efficiency reaching up to 75% for specific modules.
• Backlash as low as 15–20 Arcmin, a key figure for engineers evaluating motion accuracy.

These specifications are supported by a modular design architecture and an electromagnetic design optimized for both brushless and coreless systems, allowing the same underlying methodology to scale across different actuator sizes.

Platform Compatibility and Communication Interfaces

A datasheet is only as useful as its integration details, and VAXOR-MOTOR’s platform documentation addresses this directly. The actuator lineup supports 12V, 24V, and 48V DC bus systems, giving system integrators flexibility depending on their existing power architecture. On the communication side, the platform supports SPI and CAN FD protocols, with a standardized FPC 7PIN interface (0.5mm pitch) carrying VCC, GND, CS, SCK, MOSI, MISO, and CAL (calibration) lines. This combination of voltage flexibility and standardized wiring is central to how the company frames ease of integration into robotic limbs and multi-joint systems.

Micro Joint Actuator Modules: A Size-by-Size Breakdown

The product line positioned for dexterous robotic hands, highly integrated robots, and mechanical motion control consists of four diameter classes, each with distinct torque and application characteristics.

Φ16mm Micro Joint Module (X16S / X16L)

Designed for precision micro-manipulation in highly integrated robotic systems, this module is notably lightweight—24.3g for the S-version and 26.1g for the L-version. It delivers a continuous stalling torque greater than 7.1 mNm and a maximum stalling torque greater than 16.5 mNm. Integrated gear reduction is available in ratios of 30, 40, and 50, paired with an absolute magnetic encoder for position feedback and SPI communication for low-latency control. Thermal management is defined through chassis temperature limits of 80°C, 115°C, and 145°C, depending on power loss conditions.

Φ20mm Micro Joint Module (X20S / X20L)

Aimed at medium-load precision actuation for bionic and automation applications, the X20 series delivers a continuous stalling torque greater than 17.2 mNm and a maximum stalling torque greater than 35.3 mNm, while supporting all three voltage tiers (12V/24V/48V). Its multi-ratio gearbox spans 15, 30, and 50 ratios, and at the assembly level, stalling torque can reach up to 450 mNm at ratio 50. The FPC 7PIN interface simplifies wiring for robotic limb integration.

Φ25mm Micro Joint Module (X25S-UZ / X25S-BZ)

Built for high-torque industrial and medical robotics use cases, this module uses the CAN FD protocol for robust communication in industrial environments and delivers continuous stalling torque up to 1150 mNm at ratio 50. Backlash is reduced to 15 Arcmin, and mechanical strength limits extend to 1800 mNm initial torque in a cold state, supporting peak load scenarios.

Φ30mm Micro Joint Module (X30S-UZ / X30S-BZ)

The premium tier in the lineup, intended for heavy-duty micro-robotic applications, reaches a continuous stalling torque of up to 1500 mNm at ratio 50 and achieves up to 75% gear efficiency at ratio 30. It supports CAN FD integration for complex, multi-joint network architectures and carries a total inertia of 30.4 gcm² for stability under high-load motion.

Ultra-Micro Brushless and Coreless Motors

Beyond the joint modules, the G04P / G05P / G06P series addresses ultra-compact power needs for medical robots, drones, and wearables. These motors weigh between 1.7g and 3.75g and reach no-load speeds from 55,000 to 63,000 RPM. The same phase imbalance control within 5% used across the platform is credited with reducing production costs and improving reliability at this scale. Thermal resistance is rated to support chassis temperatures up to 145°C, and terminal resistance as low as 1.6Ω contributes to electrical efficiency.

Market Validation Across Applications

The datasheet’s technical claims are reflected in how these components have been applied. Robotic dexterous hands have used the X16 and X20 modules to achieve highly integrated mechanical motion control for human-like finger dexterity. In industrial automation, Φ30mm modules have been integrated into precision transmission systems, achieving the stated 75% gear efficiency and 15 Arcmin backlash. Micro pump systems in medical and consumer applications have employed the G05P motor at 55,000 RPM for fluid transmission, while photonic instruments have used ultra-micro brushless motors for precision positioning, relying on the under-5% phase imbalance for stable performance.

Business Model and Delivery

VAXOR-MOTOR follows a product-based sales approach for its standardized X16, X20, X25, and X30 series modules, delivered as hardware with standardized FPC 7PIN interfaces or CAN FD/SPI communication protocols. After-sales engagement centers on technical inquiries and discussion of product specifications and operational parameter ranges, keeping the relationship focused on verifiable performance data rather than generalized claims.

For engineers comparing actuator options against a detailed VAXOR-MOTOR robotic hand actuator datasheet, the documented combination of axial flux motor design, cycloidal reduction, non-contact encoding, and quantified thermal and torque limits provides a concrete basis for evaluating fit within robotic hand, industrial, and medical device applications.

http://www.vaxor-motor.com
Suzhou Vaxor-motor CO.,LTD.

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