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SERDI EVO XL - Automatic Center Cylinder Valve Seat & Valve Guide Machine
Model - EVO XL

High precision machine with technologically advanced technical solutions,conceived to work seats and valve guides of all kinds of cylinder motor heads, from motorcycle to industrial vehicle. Automatic centering system based on the spherical and flat air-float cushions crossed action principle, electronic motor control with variable speed and digital counter display (Inverter).

Universal, reliable and safe machine. Allows the machining with greatest precision from guides of 3,5 mm and seat diameters between 14 and 90 mm.

  • Extremely solid structure by modular high rigidity steel bed. Upper bed on three columns, lower bed and parallels 1500 mm long

    Three air cushions. The first one (single) on the upper bed, on the spindle head (2 axis). The second one (single) on the spindle (spherical cushion).
    The third one (triple) on the clamping fixture bed (2 axis). Air floating flat cushion on the lower table support allows a precise centering and relieve the effort.

    Machine spindle head clamping by double pneumatic jack. Universal clamping fixture 2 jaws type, 360° rotation with accessories for all kind of cylinder motor heads. Clamping on the lower bed with three pneumatic jacks, bed and parallels 1500 mm long
    Or alternative
    Universal tilting and flat heads clamping fixture with accessories for all kind of cylinder motor heads. Clamping on the lower bed with three pneumatic jacks, bed and parallels 1500 mm long Registrable mechanical end of stroke for repetitive works. Integrated lighting with neon light on the base of the machine and lamps on the spindle work head.

    Vacuum checker, carbide tip sharpe-ner and tool rack integrated on the machine.

Technical Details
Max cylinder head dimensions
unlimited mm
550 mm
450 mm
Machining capacity
mm 14 to 90
Centering workhead travel
1100 mm
Micrometric crosswise
7 mm
Spindle vertical travel
200 mm
Max spindle inclination
±6 degrees
Spindle motor power
.75 Kw
Spindle rotation speed
35 to 700 RPM
Cylinder head support table travel
11 mm
200 mm
Electric supply
1,5 kVA-230 V.
1ph 50/60 Hz
Air pressure supply
6 Bars
Air volume supply
360 L/min
Noise level at 700 RPM
60 DBA
Approximative net weight
1400 Kg
Overall machine dimensions
1580 mm
1000 mm
2100 mm
Packing dimensions: 2000 x 1230 x 2250 mm

"P" Version

Machine with spindle powered through air piston and with automatic recentering
of the spindle.
Fourth air cushion, Zero effort on the spindle, implemented by an air column
(piston) with relieving system, during the machining . Pneumatic powered
spindle quick climb (manual, pushbutton ), automatic spindle recentering

360° Rotating clamping fixture

Tilting clamping fixture

“Magic” clinometer

Flat heads clamping fixture

Carbide bit sharpener

Vacuum checker

Adjustable levelling plugs

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