The ER32 RF sealed collets with neoprene inserts, compliant with DIN ISO 15488 (DIN 6499), are designed for CNC machining applications that require through-tool coolant delivery.

These collets integrate neoprene sealing elements positioned inside the 30° taper, ensuring effective sealing of the coolant during tool clamping. This design allows the coolant to flow through the tool’s lubrication channels, directly cooling the cutting edges while improving chip evacuation from the machining area.

The ER32 RF collets are manufactured with a 4+4 slot configuration, engineered to provide uniform clamping force distribution along the tool shank. This design guarantees high clamping rigidity, machining stability and excellent concentricity, with an average runout accuracy ≤ 0.008 mm.

A clamping range of 0.1 mm allows extremely precise tool holding, minimizing vibrations, reducing tool wear and improving dimensional accuracy of the machined components. This feature is particularly important in precision machining, mold production, automotive components and high-repeatability industrial processes.

These sealed collets are designed to operate with coolant pressures up to 25 bar, making them suitable for demanding machining cycles where temperature control and chip evacuation are critical for maintaining dimensional stability and surface quality.

Coolant sealing is guaranteed only when the tool has a cylindrical shank with a nominal diameter matching the collet size and when it is fully inserted along the entire clamping length. Tools with flats such as Weldon shanks must be positioned correctly to prevent coolant leakage.

Thanks to their robust construction and precision manufacturing, ER32 RF neoprene-sealed collets are the ideal solution for modern CNC machines, high-productivity machining centers and automated production lines where precision, reliability and effective internal coolant management are essential.