Compact High Torque Density Actuators: VAXOR-MOTOR Pricing

Understanding the Search for Compact, High Torque Density Actuators

Engineers and system integrators searching for a compact high torque density actuator are typically balancing three competing requirements: minimal footprint, maximum torque output, and predictable pricing for scalable deployment. VAXOR-MOTOR, operating under the AXOR brand, positions itself as a provider of integrated micro-actuation solutions built around axial flux motors, micro cycloidal gear reducers, and non-contact encoder integration. This review examines how the company’s technical architecture, product lineup, and business model address these core buyer concerns using only the specifications and case data the company has published.

Why Torque Density and Compact Footprint Matter

The industry pain point that VAXOR-MOTOR identifies centers on the difficulty of achieving high torque density, precision, and compact footprints simultaneously—particularly in micro-manipulation and high-load robotic applications. Many actuation systems must trade off size against torque output, which limits their usefulness in dexterous robotic hands, industrial automation cells, medical devices, and consumer electronics. VAXOR-MOTOR’s stated strategic positioning is to resolve this trade-off through electromagnetic design optimization, specifically by controlling phase imbalance within 5% for ultra-micro motors. This design discipline is presented as the mechanism that improves yield and power density without enlarging the actuator’s physical envelope.

Core Technology Platform

The company’s technology platform integrates three subsystems: axial flux motors, micro cycloidal gear reducers, and non-contact absolute magnetic encoders. According to the published technical metrics, this platform delivers:

• Actuator diameters ranging from Φ16mm to Φ30mm, covering a broad span of application scales within a single modular family.
• Gear efficiency reaching up to 75% for specific modules, which matters directly to torque density since efficiency losses in the reduction stage reduce usable output torque.
• Backlash as low as 15–20 Arcmin, a factor that affects positioning accuracy in precision robotics.
• Phase imbalance controlled within 5% for ultra-micro motors, which the company links to manufacturing yield and consistency.

These metrics are achieved through a modular design architecture and optimized electromagnetic design for both brushless and coreless systems, allowing the same underlying technology to scale across different actuator sizes.

Product Lineup: The Micro Joint Actuator Modules

VAXOR-MOTOR’s Micro Joint Actuator Modules are positioned for dexterous robotic hands, highly integrated robots, and mechanical motion control—directly relevant to buyers seeking compact, high torque density actuators.

• Φ16mm Micro Joint Module (X16S / X16L): Weighing as little as 24.3g (S-version) or 26.1g (L-version), this module delivers a continuous stalling torque greater than 7.1 mNm and a maximum stalling torque above 16.5 mNm. Integrated gear reduction ratios of 30, 40, and 50 provide high torque within a 16mm diameter footprint, while an integrated absolute magnetic encoder and SPI communication support precise, low-latency position feedback. Thermal management is handled through chassis temperature limits of 80°C/115°C/145°C based on power loss.

• Φ20mm Micro Joint Module (X20S / X20L): Designed for medium-load precision actuation, this module offers a continuous stalling torque above 17.2 mNm and a maximum stalling torque above 35.3 mNm, supporting 12V/24V/48V operation. With gearbox ratios of 15, 30, and 50, the assembly can reach a stalling torque of up to 450 mNm at ratio 50, and the standardized FPC 7PIN interface simplifies integration into robotic limbs.

• Φ25mm Micro Joint Module (X25S-UZ / X25S-BZ): Built for industrial and medical robotics, this module uses the CAN FD protocol for robust communication and achieves a continuous stalling torque of up to 1150 mNm at ratio 50. Backlash is reduced to 15 Arcmin, and the mechanical strength limit reaches 1800 mNm in an initial torque, cold-state condition—relevant for peak load scenarios.

• Φ30mm Micro Joint Module (X30S-UZ / X30S-BZ): The premium module in the lineup, it delivers a continuous stalling torque of up to 1500 mNm at ratio 50 and gear efficiency up to 75% at ratio 30. It supports CAN FD networking for multi-joint robot architectures and provides a total inertia of 30.4 gcm² for stability under high-load motion.

  

Ultra-Micro Brushless and Coreless Motors

For applications requiring even smaller electromagnetic components, the G04P / G05P / G06P Series targets medical robots, drones, and wearables. These motors weigh between 1.7g and 3.75g and achieve no-load speeds from 55,000 to 63,000 RPM, addressing the pain point of high cost and low yield in sub-6mm motor production. Phase imbalance within 5% supports cost reduction and reliability, chassis temperatures up to 145°C are supported, and terminal resistance as low as 1.6Ω improves electrical efficiency.

Case Data Across Industries

VAXOR-MOTOR references several application cases that demonstrate performance in practice. In robotic dexterous hands, the X16 and X20 modules were used to achieve high-integration mechanical motion control, enabling human-like finger dexterity. In industrial automation, Φ30mm modules were integrated into precision transmission systems, achieving 75% gear efficiency and 15 Arcmin backlash. In micro pump systems, G05P ultra-micro motors operating at 55,000 RPM were employed to drive fluid transmission in medical and consumer applications, emphasizing low cost and high power density. In photon optics, ultra-micro brushless motors were applied for precision positioning in optical instruments, benefiting from the under 5% phase imbalance for stable performance.

Platform Compatibility and Integration

For buyers evaluating integration effort, VAXOR-MOTOR’s actuators support 12V, 24V, and 48V DC bus systems, along with SPI and CAN FD communication protocols. The FPC 7PIN interface (0.5mm pitch) carries VCC, GND, CS, SCK, MOSI, MISO, and a dedicated calibration line (CAL), standardizing the wiring approach across the module lineup.

Pricing Approach and Delivery Model

Regarding pricing—one of the core intents behind this search—VAXOR-MOTOR follows a product-based sales approach for its standardized modules across the X16, X20, X25, and X30 series, rather than custom or negotiated pricing per project. Delivery is handled as hardware modules with standardized FPC 7PIN interfaces or CAN FD/SPI communication protocols, and after-sales support covers technical inquiries and discussions regarding product specifications and operational parameter ranges. This structure gives buyers a predictable path from module selection to deployment, since each product line comes with documented torque, speed, and thermal data to verify fit before purchase.

Who Should Consider This Platform

Based on the documented industry coverage, this actuator platform is relevant to robot manufacturers (bionic and dexterous hands), medical device developers, industrial system integrators, and wearable technology firms. Each of these customer types benefits from a different combination of the platform’s attributes: dexterous hand developers rely on the compact Φ16mm and Φ20mm modules, industrial integrators lean on the higher-torque Φ25mm and Φ30mm modules with CAN FD networking, and medical or consumer electronics developers benefit from the ultra-micro G-series motors’ small size and thermal resilience.

Summary

For engineers evaluating a compact high torque density actuator, VAXOR-MOTOR’s published specifications show a consistent design logic: pair axial flux motors with micro cycloidal reducers and non-contact encoders, control phase imbalance within 5%, and scale the same modular approach from Φ16mm to Φ30mm diameters. Combined with a product-based pricing model and standardized FPC 7PIN/CAN FD/SPI integration paths, this gives buyers a documented, verifiable basis for comparing torque, size, and cost trade-offs against their specific application requirements.

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