22N 44.8mm Long Stroke Shaft Linear Voice Coil Motor For Scanning Systems

The VCAB0022-0448-00A shaft-type voice coil motor is specifically designed for scanning systems, optical delay lines, and precision linear positioning applications that require long travel without the need for complex rotary-to-linear conversion.

The VCAB series features an integrated motion shaft with precision linear bearings, ensuring smooth, low-friction guidance throughout the entire stroke range. The moving shaft is constructed from lightweight, high-stiffness, wear-resistant materials. It is capable of continuous scanning or reciprocating motion without overheating, making it suitable for high-intensity duty cycles.

In optical coherence tomography (OCT) systems and Fourier transform infrared (FTIR) spectrometers, long-stroke linear actuators are critical for adjusting the optical path length. This linear voice coil motor eliminates the need for ball screws or belt drives, providing direct, cogging-free motion that ensures scan linearity and reduces mechanical artifacts.

The zero-backlash design improves measurement repeatability, which is critical for high-precision spectroscopic and metrological applications. Compared to traditional combinations of rotary motors and lead screws, this linear voice coil motor offers several significant advantages: no mechanical backlash, a smooth speed curve free of cogging effects, lower friction to ensure stable force output, and a simpler mechanical structure.

The direct-drive design also eliminates wear points associated with threads and belt teeth, thereby extending service life and ensuring more stable long-term calibration. The semi-enclosed housing protects internal components while still allowing for easy inspection or maintenance. This design is particularly beneficial in industrial environments where dust and particulates can affect the performance of precision linear bearings.