3.3KW Raytools Fiber Laser Cutting Head BT240S for Fiber Laser Machine BT240S 3.3KW planar cutting head Upgraded dustproof design The risk of contamination to the laser head is almost zero Specification Power Rating  ≤3.3KW Clear aperture  28mm Collimation Lens Focal Length  100mm Focus lens focal length  125mm / 150mm / 200mm (optional) Specification of Protect lens  φ24.9mm x 1.5mm (top); φ 27.9mm x 4.1mm (bottom) Assist gas pressure  ≤25bar Package size  350mm x 300mm x 200mm (14in x 12in x 8in) Weight  3.5kg Gross Weight  6.5kg(14.3lbs) Distance range (accurate to 1mm)  0.3-10mm Calibration  manual calibration Reaction time  <1ms Temperature stability  in the range of 0-45 degrees  Power demand  24V Output (linear signal or optimization curve)  0-10V /+ -10v analog Description: The BT240S series, based on the design of BT240 by Swiss RAYTOOLS AG, was launched in 2017 with fiber cutting heads suitable for medium and high power industrial applications. Compared with the BT240 series, the updated BT240S series has been comprehensively optimized in dustproof design and customer experience. The contamination risk of the Collimating lens is very high when the optical fiber is inserted and removed. The BT240S series adds protective mirrors to the collimation assembly, which minimizes the risk of contamination of the collimator. At the same time, the structure of the protective mirror has been upgraded comprehensively, and the dust cover plate has been added on the protective mirror. The double-layer protection design greatly improves the user's experience in the replacement of protective lenses. The risk of contamination is almost zero. Feature: • optimized optical configuration and smooth and efficient air flow design; • fully upgraded dust-resistant design, double layer protection, which makes the risk of lens contamination almost zero; • add the anti-collision function of laser head; • dial focus manual adjustment, fine and flexible, with adjustable range of 20mm and precision of 0.05mm; • various fiber interfaces, suitable for various fiber lasers; • the collimating mirror, focusing mirror and nozzle all have cooling structure.