VALVE SEAT MACHINING/CUTTING EQUIPMENT
NOTES, REQUIREMENTS, INFORMATION, ETC.
Valve seat machining requires a variety of cutters of different diameters and angles for the various engines. Different cutters are also needed to machine the valve seat and the upper and lower correction angles.
Requirements:
- Valve seat concentricity < 0.02mm
- Machining/cutting range approx. 20 - 65mm
- Valve seat angle: inlet 45/30/20°, exhaust 45/30°
- Correction angle: upper 15/35°, lower 50/58/60/75°
- If possible. a single cutter for machining the valve seat and upper/lower corrections.
- Pilots (rigid or with expandable collet chucks) for valve guide inside dia. 6, 7, 8, 10, 11, 12mm.
- Rigid pilots are preferred.
- Pilots resistant to corrosion and non-warping, e.g. tungsten carbide or stainless steel.
- Cutters should have carbide surfaces.
- Rigid or adjustable reamers for machining the valve guide and the valve guide bore of 5 - 24mm.
- Use go/No-go gauges (MB Special Tools) to determine the valve guide and valve guide bore wear.
Before machining valve seats, use MB Special Tools to check the valve guide e.g...
Distance from cylinder head to end
face of valve plate
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Valve guide checking
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Further MB special Tools are available for the replacement and machining of the valve guide, valve guide bore, valve seat, etc. *See MB Special Tools in Group 05).
Mandrels for Removing and Installing
the valve guide
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Valve guide reamer
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Checking the valve seat width |
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