LYNDEX-NIKKEN

A standard SK collet grips the tool shank but does not seal against coolant, so coolant can escape around the collet rather than being directed through the tool. A Lyndex-Nikken sealed SK coolant collet incorporates a sealing mechanism that forces coolant to flow through internal passages and out of the tool's coolant holes. This is necessary for through-coolant drilling, milling, and reaming, where coolant must reach the cutting edge to improve chip evacuation and heat dissipation. Sealed collets are available in the same SK10 interface and bore sizes as standard collets, allowing direct replacement in compatible holders.

The SK10 sealed coolant collet series includes metric bores of 3 mm, 4 mm, 6 mm, and 10 mm, as well as inch bores of 1/8 in, 1/4 in, 5/16 in, and 3/8 in. These sizes correspond to common tool shank diameters used in CNC machining centers. Each collet is identified by a manufacturer part number, such as SK10-6AC for the 6 mm version or SK10-1/4AC for the 1/4 in version. The sealed design is consistent across the range, enabling through-coolant operation when used with SK10 collet chucks and holders that support coolant delivery.

Lyndex-Nikken sealed coolant collets are designed for high-pressure coolant delivery in machining operations. The sealing feature prevents coolant from bypassing the tool, which is essential when using high-pressure coolant to improve chip evacuation and tool life. The collets are intended for use in CNC machining centers and other machines equipped with through-coolant capability. The maximum pressure rating depends on the specific holder and machine setup; users should consult the holder manufacturer's specifications for compatible pressure limits. The collets themselves are constructed to withstand the forces and flow associated with through-coolant machining.

Beyond sealed coolant collets, Lyndex-Nikken manufactures a range of toolholding and rotary tooling products. These include collet chucks, shrink-fit holders, hydraulic chucks, milling chucks, angle heads, and live centers. The brand also produces standard collets, tap holders, and specialty tooling for specific machining tasks. The product families cover applications in milling, drilling, turning, and reaming on CNC machining centers and lathes. Many products are available in various taper interfaces, such as BT, CAT, HSK, and SK, to match different machine spindles. 3G Electric stocks a selection of these items, with part numbers and specifications available for identification.

To select the correct collet, first determine the tool shank diameter in either metric or inch units. Then confirm the collet chuck or holder interface, such as SK10, to ensure compatibility. Lyndex-Nikken sealed coolant collets are labeled with the bore size and series; for example, SK10-6AC indicates an SK10 collet with a 6 mm bore. The collet must match both the holder series and the tool shank diameter. If the tool has a coolant hole, the collet's sealed design will direct coolant through it. For assistance, refer to the manufacturer's catalog or contact 3G Electric with the holder model and tool shank size.

Lyndex-Nikken SK10 collets are manufactured to the SK10 interface standard, which defines the taper, nut thread, and overall dimensions. As a result, they are generally interchangeable with other holders that conform to the same SK10 standard, provided the holder is designed for the same collet type and coolant configuration. However, sealing effectiveness and coolant delivery can depend on the holder's internal design and the condition of the nut and taper. For critical high-pressure applications, verify compatibility with the holder manufacturer. 3G Electric can provide dimensional data and part numbers to help confirm fit.