SERDI 4.5 – Valve Seat & Guide Machines

The SERDI 4.5 is a highly accurate and versatile machine for valve guide reaming and valve seat cutting. Thanks to its powerful 2.2 kW built-in motor spindle and triple air-cushion centering system, it provides fast, precise and stable machining of valve seats and guides.

The SERDI 4.5 is suitable for applications ranging from small engines to large stationary engines, with a valve seat machining capacity of 16–120 mm.

Available configurations

• 4.5 SB SS – Small Base / Small-Short configuration. The most compact version, ideal for general engine rebuilding and standard cylinder head applications.

• 4.5 SB LS – Small Base / Large-Long configuration. Combines the compact base with an extended working range for larger cylinder heads.

• 4.5 LB SS – Large Base / Small-Short configuration. Features a larger and heavier base for increased stability while retaining the compact working configuration.

• 4.5 LB LS – Large Base / Large-Long configuration. The largest and most extensive version, designed for larger cylinder heads and demanding professional applications.

Common features

All SERDI 4.5 models offer:

• Precision valve seat and guide machining

• 2.2 kW built-in motor spindle

• Triple air-cushion centering system

• Continuous spindle speed variation

• Air-floating fixture table

• Universal clamping system for vertical and inclined valve guides

• Integrated vacuum tester

• Digital depth control with 0.01 mm accuracy

• LED work lighting

• Valve seat capacity: 16–120 mm

• Suitable for professional engine rebuilding applications

Choose the configuration that best matches the size and type of cylinder heads you work with.