In today's rapidly evolving fields of robotics and high-end automation, engineers consistently face a core challenge: how to achieve more powerful performance, more precise control, and greater reliability within extremely limited space? Traditional "housed" motors, with their standardized casings and structures, often become a design bottleneck.

Enter the Frameless Motor. Born from a revolutionary design philosophy, it is becoming the key to solving this problem. As a leader in this field, MAINTEX is providing the global innovator community with a powerful core drive, distinguished by its exceptional value-for-money, superior performance, and deep customization capabilities.

1. What is a Frameless Motor? An In-Depth Look at its Core Components

A frameless motor is essentially a "de-cased" brushless servo motor. It is not the complete, self-contained unit you might be familiar with, but rather is broken down into two fundamental components:

• Stator: Carries precision copper windings, creating the electromagnetic field – the stationary part.
• Rotor: Inlaid with high-performance rare-earth magnets, outputting torque – the rotating part.

Think of it as the "heart and muscles" of your device, implanted directly into the "body" of the machine. This highly integrated concept eliminates the structural redundancies of traditional motors, shortening the power transmission path to its minimum.

2. How Does a Frameless Torque Motor Work? The Core of a Precision Servo System

A frameless BLDC motor does not operate in isolation; it is the execution core of a complete precision servo system. Its operation is a precise closed-loop process:

1. Precise Sensing: High-resolution encoders or resolvers capture real-time, millisecond-level changes in rotor position.
2. Intelligent Decision-Making: Position signals are transmitted to the servo drive, which performs high-speed calculations based on the application's complex requirements.
3. Swift Execution: The drive issues commands, precisely controlling the current flowing to the stator windings, thereby achieving micron-level and milli-Newton-meter level accuracy in regulating rotor position, speed, and torque.

This process cycles continuously, ensuring the system's unparalleled dynamic response and control accuracy.

3. Why Choose a Frameless Motor? Four Revolutionary Advantages

When your design is constrained by space, weight, or performance, frameless motors offer the ultimate solution:

• Extreme Compactness and Light Weight: By eliminating redundant housings and connectors, the overall equipment structure can be made smaller and lighter. This is crucial for agile robots, UAVs, and portable devices.
• Superior Performance and Precision: Frameless motors typically employ direct drive technology that eliminates gear backlash, transmission errors, and elastic deformation at the source. This delivers exceptional positioning accuracy, smooth low-speed operation, and near-instantaneous response.
• Robust Environmental Resilience: Integrated directly and sealed within the host machinery, the motor can confidently handle harsh environments like high-pressure washdown, underwater operation, extreme temperatures, high vacuum, and high radiation.
• Unmatched Design Freedom: Engineers gain unprecedented autonomy, freely selecting bearings, shafting, and cooling systems to perfectly match the overall architecture, breaking free from the form-factor constraints of standard motors.

4. MAINTEX Frameless Motors: Built for High-Performance Applications, A Domestically Powered Force with Extreme Value

In the frameless motor sector, while international brands like TQ maintain strong recognition, their premium pricing often discourages numerous innovative projects - particularly those in R&D phases or cost-sensitive applications. As a dedicated source factory specializing in frameless motors, MAINTEX directly addresses this challenge through exceptional engineering capabilities and disruptive cost efficiency, offering a smarter alternative for discerning customers.

MAINTEX vs. TQ: Why We Are the More Cost-Effective Choice

• Extreme Price Advantage: While offering performance (in torque density, precision, reliability) comparable to top-tier brands like TQ, MAINTEX frameless motors are highly competitively priced, often costing a fraction of equivalent tier international products. This does not come at the expense of quality, but stems from our vertical integration as a source factory and efficient supply chain management. This allows your project to achieve top-tier performance within a strict budget, or to reinvest the savings into R&D for other critical parts of your product.
• Deep Customization & Agile Response: Brands like TQ typically focus on standard products, with long lead times and high thresholds for customization. A core strength of MAINTEX is our support for deep customization of various specifications and parameters. From size and winding schemes to special interfaces, we can respond quickly and adapt flexibly, ensuring the motor perfectly fits your unique design, rather than forcing your design to conform to a standard motor.
• Extensive & Proven Product Matrix: We offer two main series (Slotted and Slotless), encompassing nearly a hundred specifications, covering a torque range from 0.03 N.m to 30 N.m and speeds from 15 rpm to 200,000 rpm – a comprehensiveness on par with international brands. More importantly, our products are mass-produced and deployed in real-world applications. For instance, the agile and powerful joints of the "Jueying" quadruped robot from the renowned domestic robotics company, Unitree Robotics, are driven by MAINTEX frameless motors, fully validating the exceptional stability and consistency of our products under extreme operating conditions.

5. How MAINTEX Empowers Your Cutting-Edge Applications?

1. Revolutionizing Humanoid Robot Joint Actuation

Traditional hydraulic or belt-driven joints suffer from low efficiency, heaviness, and control complexity. MAINTEX has developed a series of high-torque-density direct-drive torque motors specifically for this purpose. They feature very low torque ripple and excellent torque-current linearity, enabling precise, smooth, and efficient force control. Compared to sourcing expensive TQ torque motors, choosing MAINTEX means you can equip your humanoid robot with joint solutions of the same top tier – or even better tailored to your design needs – at a more reasonable cost.

2. Miniaturization and Lightweighting for Collaborative Robot Joints

Collaborative robots typically use low-voltage bus systems and have extremely high requirements for joint compactness. MAINTEX has developed series of high-torque-density modular torque motors (frameless motors) for this purpose. We can further provide integrated motor-and-drive controller solutions with a hollow shaft structure, significantly saving space and reducing weight. This deep integration capability, combined with our cost advantage, allows collaborative robot joints to achieve the goals of "miniaturization, lightweighting, and high torque" while effectively controlling the overall BOM cost, significantly enhancing market competitiveness.

3. Broad Industry Applications

Whether for building experimental platforms in research institutions, or for replacing traditional housed motors or costly imported frameless motors in industrial settings, MAINTEX is your ideal choice. Our products have been successfully applied in high-precision fields such as surgical robots, aerospace actuation systems, precision optical scanning, and semiconductor processing, helping customers optimize performance while achieving cost efficiency and supply chain autonomy.

Partner with MAINTEX, Integrating Innovative Power and Cost Advantage into Your Designs

Choosing a frameless motor is not just about selecting a power source; it's about embracing a new design philosophy and supply chain strategy. Choosing MAINTEX means selecting a strategic partner that combines top-tier performance, extreme cost-effectiveness, and flexible customization capabilities. When you no longer need to pay a high premium for brand recognition, innovation becomes freer and more efficient.

Whether you are engaged in cutting-edge research or committed to building the next generation of revolutionary smart machines, MAINTEX's frameless motor solutions will be a powerful booster on your path to success.

Want to learn more details, get a customized solution, or a highly competitive quote?
Our application engineering team is ready to provide you with professional technical support.

Contact us now!
Email: james.yang@maintexpt.com