Serdi 3.5 Valve Guide and Seat Cutting Machine

Key Features

• Triple Air-Float Centering System — The patented “live pilot + air-cushion” system aligns the spindle to each valve guide independently, ensuring accurate concentricity and seat alignment even if guides are slightly off-center or angled.
• Integrated High-Precision Spindle (1.5 kW) — Built-in motor spindle provides stable torque and smooth rotation, enabling precise seat cutting without chatter — suitable for standard seats and high-performance applications alike.
• Valve Seat Capacity: Ø 16–70 mm (0.6″–2.75″) — Covers the range needed for most automotive and motorcycle heads, making the machine versatile for small-bore four-cylinders up to modest V-heads.
• Fine Depth Control — 0.01 mm (0.0004″) Resolution — Allows for extremely precise seat depth and consistency across multiple seats within a head — critical for performance and reliability.
• Adjustable Head/Table Clamping & Tilt Versatility — The machine includes clamping fixtures that can accommodate vertical or inclined valve-guide heads; many common heads load easily with supplied spacers or clamping bars.
• Built for Multi-Valve & Performance Heads — Because of its centering precision and seat-size range, the 3.5 handles small and compact multi-valve heads well — a necessity for many modern engines.