Seco ER40 Collet Chuck HSK-a 100 4.08kg 120mm 5675 40120 High-Precision Toolholder

The Seco 59306 5675 40120 (also referred to as E9306 5675 40120) is an ER40 collet chuck designed for high-precision machining applications. This toolholder features an HSK-A 100 machine-side connection interface, compliant with DIN ISO 12164-1 standards. It supports an ER 40 clamping size with a workpiece-side connection, accommodating a clamping range from 4.0 mm to 26.0 mm. The unit has a functional projecting length of 120 mm (4.724 inches) and a body diameter of 63.0 mm. It is engineered for high-speed performance, featuring a symmetrical design balanced to G6.3 at 15,000 RPM to reduce vibration and improve surface finish quality. The holder is coolant-proof and typically includes a clamping nut. Its rigid construction is suitable for a variety of operations, including light milling on 4-5 axis machines and heavy-duty roughing, providing high clamping forces and low run-out accuracy of ≤ 0.008 mm at 2.5 x D. The total mass of the assembly is approximately 4.08 kg (9.00 lbs). No year of manufacture is available in the provided data.