Renhe A2/40K

RENHE A2/40K is the high-speed version of the A2 line, designed for nail technicians who handle high volumes and won’t tolerate any drop in performance. The 75 W handpiece reaches 40,000 revolutions per minute with a constant torque of 3.0 N·cm, maintaining absolute control at every stage of the treatment: from dry manicures to nail extensions, from product removal to the most delicate finishing of the hyponychium.

Main Features

• Forward/Reverse Rotation — Reverse the direction of rotation with a single button, featuring a green indicator light for forward rotation and a blue one for reverse rotation: essential for adapting filing to both left- and right-handed users.
• Dual Control Modes — Manual control via a knob or foot pedal with touch-sensitive start and stop, for maximum freedom of movement during the treatment.
• Memory function — Control mode and rotation direction are saved upon restart, so the workstation is ready just as you left it.
• E4 Protection — If the handpiece remains locked for more than 8–10 seconds, the system automatically intervenes, displays code E4, and alerts the user with a flashing blue LED, protecting the motor and bearings.
• 2.35 mm universal chuck — Compatible with the entire range of professional bur tips, including 3.0 mm and 3.175 mm sizes (ISO 7785-2 Type 2).
• Complete professional maintenance — Brush-type motor with carbon brushes, front and rear bearings, and a fully replaceable collet: an investment that remains efficient over the years rather than becoming a disposable part.

Why Choose the RENHE A2/40K

The ergonomic 215-gram handpiece remains balanced and free of excessive vibration even during the longest sessions, reducing wrist fatigue. The compact control unit, measuring 163 × 125 × 67 mm, fits on any workstation, and its full compatibility with the 4Nails range of drill bits—from removal bits to diamond-tipped cuticle bits—makes it the heart of a complete professional setup.

For professional use only. Always observe the maximum speed specified by the drill manufacturer based on the bit diameter: larger diameters require lower speeds, and failure to do so may cause the shank to bend, damage the bearings, or deform the chuck. Do not use rusty or bent bits, and always verify that the bit is securely locked in place before starting the tool. Replace the bit only when the handpiece is turned off. Wear personal protective equipment, including safety goggles and a dust mask, and work with an appropriate dust extractor. Do not allow oil, water, or alcohol to enter the handpiece. Operating conditions: 10–40 °C, relative humidity 30–75%, pressure 700–1060 hPa. Keep out of reach of children.