Combining high-precision tool clamping with affordable pricing, a standard range of hydraulic expansion chucks has been introduced by us, Nydaloxe Precision. The ST series is ideal for demanding machining operations where conventional collet chucks would lack sufficient rigidity or robustness.
Engineered to DIN 69882-7 standards regarding external nose contour, wall thickness, clamping length and front body proportions, the range supports milling, drilling and reaming for both roughing and finishing operations. Designed for seamless shop floor integration, the series accommodates multiple machine spindle interfaces including BT 40, SK 40 and HSK-A 63.
The optimised hydraulic chamber system guarantees runout accuracy and repeatability of under 0.003 mm, even at high torque values and elevated speeds. As the system operates without moving clamping elements, it is unaffected by centrifugal forces, delivering superior surface finishes and tight dimensional tolerances.
Internally, an advanced dirt groove system forces oil, grease and lubricant residues into dedicated recesses and away from critical holding areas. This maintains a clean, dry clamping surface that prevents tool slippage and pull-out, eliminating catastrophic failures that can cause expensive spindle damage and workpiece scrap.
The ST series prioritises long-term operational cost savings as well as efficiency. Unlike with rigid shrink-fit tool holding – the other option for high-performance machining – cutter life is extended and spindle stress minimised due to the excellent vibration-damping characteristics of the chamber in the Nydaloxe products. It cushions cutting forces, absorbs harmonic vibrations and prevents micro-chipping on tool edges.
Moreover, unlike shrink-fit technology, which involves expensive, power-hungry induction heating machines to raise the temperature of tool holders to between 300°C and 450°C, hydraulic chucks are inherently safe for the operator to handle.
Setup times are reduced, as operators can execute a micron-accurate tool change directly at the machine spindle within a few seconds using a single clamping screw and a hexagon spanner. Durability is enhanced by an upgraded, robust, double-lip piston sealing arrangement that prevents pressure loss and has been proven in laboratory tests to withstand well over 13,000 continuous clamping cycles.
Additionally, our hydraulic chucks can use slotted, sealed or peripheral-coolant reduction sleeves capable of handling internal fluid delivery up to 80 bar pressure. Tool exchanges or projection adjustments are rapid using a simple Allen key, allowing a single chuck to hold a new size of tool shank within seconds.
While other premium tool holding equipment manufacturers offer similar runout, high-speed operation and integrated vibration damping specifications, the Nydaloxe ST series differentiates itself in several key areas.
The first is price. The product introduction has disrupted the market by introducing economical, flat-rate pricing across virtually all standard diameters from 6 mm to 32 mm for SK40 and BT40 interfaces. Additionally, cost-effective starter kits are available housed in a durable plastic case, including the tool holder and five matching reduction sleeves.
The second major differentiator is geometric standardisation. While competing hydraulic chuck lines use proprietary configurations for wall thickness and nose profiles to optimise weight or balance, the ST series adheres strictly to the standard, universally-recognised DIN 69882-7 external contour. Subcontractors and OEMs can therefore swap a Nydaloxe chuck directly into an existing production process, without risk of collision or needing to rewrite CNC code and simulate a tool path again.
Finally, we provide expert service. Any tool holder can be dismantled, the wear components replaced and the hydraulic fluid system flushed and refilled. The unit is then recalibrated, inspected and returned to the user, quickly and inexpensively.
