Overview
Akribis is a Singapore-based manufacturer specializing in precision motion control solutions, notably direct-drive linear and rotary motors. Founded in 2004, the company serves industries requiring micron-level accuracy, such as semiconductor lithography and biomedical instrumentation. Its products eliminate mechanical transmission components like ball screws, reducing maintenance and improving repeatability. Akribis systems are integral to wafer steppers, laser cutters, and coordinate measuring machines (CMMs).
Structure and Working Principle
Akribis linear motors employ a slotless design with proprietary coil winding techniques, minimizing cogging and enabling smooth motion. The stator contains epoxy-encased windings, while the mover integrates high-energy permanent magnets. Unlike traditional servo systems, direct-drive operation bypasses backlash-inducing mechanisms. Motion controllers synchronize current phases to generate Lorentz force, achieving accelerations up to 30 G and positioning repeatability under ±0.1 µm.
Key Features
Core advantages include sub-micron positioning accuracy (down to 50 nm), high force density (continuous thrust to 2,500 N), and modular configurations. The SMA series, for instance, offers vacuum-compatible versions for semiconductor tools. Thermal management is optimized through conductive cooling channels. IP65-rated models withstand harsh environments, while non-magnetic variants are available for MRI applications.
Application Areas
Primary sectors include semiconductor front-end equipment (e.g., ASML-compatible stages), flat panel display manufacturing, and precision optical alignment. Medical applications range from robotic surgery arms to proton therapy gantries. In automation, Akribis motors drive high-speed pick-and-place robots and 3D printing platforms. Aerospace uses include satellite component testing rigs requiring vibration-free motion.
Maintenance and Precautions
Routine maintenance involves inspecting cable management systems and verifying cooling performance. Air-bearing stages require clean dry air (CDA) supplies with 0.01 µm filtration. Avoid exposing magnets to temperatures above 80°C to prevent demagnetization. During installation, use laser interferometers for alignment validation. Contamination from metal chips or liquids can cause irreversible damage.
B2B Procurement Guide
Lead times typically range 8–12 weeks for custom configurations. Buyers should provide detailed specs: stroke length, resolution, stiffness requirements, and environmental conditions like vacuum level. Consider total cost of ownership—direct-drive systems reduce long-term maintenance versus belt-driven alternatives. For prototyping, Akribis offers rental units with technical support. Bulk orders (10+ units) may qualify for 15–20% discounts.
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