Faulhaber Launches BXI Series to Advance High-Torque Precision Robotics
Faulhaber has introduced its BXI Series, an integrated drive solution specifically engineered to meet the growing demand for high-torque density and space-efficient motion in modern robotics. By unifying a high-performance motor, an optimized planetary gearhead, and a high-resolution encoder into a singular, compact package, the BXI platform enables engineers to overcome the physical constraints typically associated with complex, multi-axis robotic joints.
At the core of the BXI design is a focus on achieving maximum output from a minimal footprint. The system features a sophisticated motor construction with 21 pole pairs, a grooved stator, and high-efficiency iron-core windings, capable of delivering up to 20 Nm of torque. Unlike modular systems that require third-party integration, Faulhaber manufactures each component in-house, ensuring that the motor, gearhead, and encoder function as a cohesive, low-maintenance unit. The gearhead itself is optimized to provide significant force without the bulk often found in traditional mechanical power transmission, facilitating smoother and more responsive movement in high-precision tasks.
Precision is bolstered by the integration of a 15-bit synchronous series interface (SSI) encoder. This high-resolution component provides up to 32,768 positions per revolution, delivering the granular control necessary to replicate human-like dexterity in robotic armatures. To ensure reliability in industrial settings, the position-reading algorithm is engineered for robust interference rejection, maintaining signal integrity even in the electronically noisy environments common on factory floors.
Designed for durability and thermal efficiency, the BXI series utilizes a flat, corrosion-resistant aluminum housing that serves as an effective heat sink, eliminating the need for bulky external cooling fans or heat fins. Measuring only 34 mm in length, the drive is exceptionally well-suited for integration into space-constrained robotic joints, such as shoulders or wrists, where maintaining a low profile is essential. With versatile voltage support up to 50 V DC and standard industrial interface compatibility, the BXI platform simplifies the overall electronic integration process for machine builders.
These capabilities position the BXI series as a versatile building block for advanced automation. Whether implemented in cobots requiring delicate handling or complex humanoid systems demanding 360° range of motion and consistent torque, the drives offer the stability and accuracy required for long-term operational performance. By standardizing high-resolution feedback and optimized power density, Faulhaber is enabling a new level of agility in robotic motion control, effectively narrowing the gap between mechanical limitations and the fluid, precise requirements of real-world physical AI applications.
Written by: Julian West. With over 17 years of experience in motion control and electromechanical design, Julian has architected numerous precision drive systems for high-speed pick-and-place units and collaborative robotic platforms.