SERDI 3.5 Used Valve Seat Cutting Machine

MU1870 – SERDI 3.5 USED VALVE SEAT CUTTING MACHINE

The used valve seat cutting machine SERDI 3.5 is of the year 2016 and is in good condition.

• Head clamping fixture, pilots, insert holders and inserts not included

DESCRIPTION

The SERDI 3.5 Used Valve Seat Cutting Machine is a machine tool designed for high-precision machining of valve seats and valve guides on multi-valve cylinder heads, both in automotive and motorcycle applications. The technical configuration is aimed at ensuring high concentricity even in the presence of very small diameter guides, down to 3 mm, while maintaining stability and control during all machining phases.

The operating range covers machining diameters between 16 and 70 mm, making the machine suitable for most modern cylinder heads. The structure is made of cast iron elements, including base, columns and beam, assembled on a welded frame, a solution that allows vibration reduction and chatter-free machining, improving the quality of the valve seat finish.

One of the distinctive elements is the patented workhead, equipped with a triple air cushion system and integrated spindle motor. This configuration significantly reduces the inertia of moving parts and allows high sensitivity during centering. The automatic centering system, based on live pilot technology, allows alignment of the valve guide even in the presence of misalignment or angular deflection, improving overall machining accuracy.

The integrated spindle, with a power of 1.2 kW and controlled by a 1.5 kW Siemens inverter, operates with variable speed from 100 to 1200 rpm and ensures high and constant torque even at low speeds. This feature is particularly useful when machining valve seats made of hard materials. The possibility of reversing the rotation direction further increases operational flexibility. The 80 mm spindle diameter and the rigidity of the entire assembly contribute to maintaining high standards of precision and concentricity with respect to the valve guide.

Machining control is managed by a digital system that allows depth reading with an accuracy of up to 0.01 mm, with display in millimeters or inches. The spindle controls are positioned near the handwheel, allowing immediate adjustment of speed, rotation direction and depth reset. The large handwheel allows fine and controlled feed during cutting operations.

The cylinder head movement is performed manually along the front axis, with a pneumatic locking system that ensures stability during machining. The machine can be equipped with a 360° roll over fixture, which facilitates positioning of the cylinder head and access to different sides while maintaining effective clamping.

From an operational point of view, the presence of new generation SERDI tooling allows a reduction of cutting force up to 30%, improving machining quality and contributing to longer tool life. The integration of a vacuum tester allows quick checking of valve sealing directly on the machine, while the diamond wheel tool sharpener helps maintain cutting performance over time.

The integrated LED lighting improves visibility of the working area and contributes to more efficient machine use.

This combination of technical solutions makes the SERDI 3.5 Used Valve Seat Cutting Machine particularly suitable for workshops specialized in cylinder head reconditioning that require precision, repeatability and reliability in valve seat machining operations.

TECHNICAL DATA

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SERDI 3.5 VALVE SEATS CUTTING MACHINE