CHRIS-MARINE®

Valve Seat and Recess Lathe / VRL

A combined machine for in-situ machining of valve seats and seat recesses on 4-stroke medium speed diesel engines.

  • Valve seats from 55–230 mm diameter
  • Recesses from 74–200 mm diameter
  • Machining angles set according to customer’s requirement
  • Stepless adjustable rotation speed
  • Self-centring pilot spindle
  • Machining horizontally, vertically and chamfering
  • Pilot spindle with recess measurement slot for very easy handling
  • Diameter measuring tool
  • Automatic feed mechanism
  • Electrically driven
  • Superior to grinding alternatives

VRL Valve Seat and Recess Machine

VRL Valve Seat and Recess Machine

VRL Valve Seat and Recess Machine

Special split spindle provides for excellent accessibility and automatic centering without further adjustments

Special split spindle provides for excellent accessibility and automatic centering without further adjustments

Easy replacement of adaptor for valve seat machining

Easy replacement of adaptor for valve seat machining

Multi-position adjustable tool holder

Multi-position adjustable tool holder

A multi-purpose valve seat tool for in-situ machining of valve seats and seat recesses on 4-stroke medium speed diesel engines

Valve seat VRL makes it possible to restore seat surfaces and angles of worn seats, to original specification. The machine can also help to modify the size of cylinder head recesses for fitting of oversized seats. VRL is electrically driven and easy to operate thanks to its robust design and incorporated features.

VRL – machine features

  • Valve seats from 55 to 230 mm diameter
  • Recesses from 74 to 200 mm diameter
  • Pre-set machining angles according to customer’s requirement
  • Adjustable for different machining diameters.
  • Pre-sets for multiple engine types possible
  • Self-centering pilot spindle
  • Adjustable depth of cut
  • Electrically driven
  • Automatic feed mechanism
  • Stepless adjustable rotation speed
  • Optional: Diameter measuring tool

 

The VRL is available for several engine maker such as: Bergen, MAN B&W, Wärtsilä, Sulzer, Caterpillar, etc.

Technical Specification
Electrical power supply 1-phase 180 – 252 V, 48 – 62 Hz
Power required 0.37 kW
Max dimensions H: Machine 472 mm + Spindle 185 – 1100 mm W: 250 × 192 mm
Valve seat recess machining
Machining range 74 – 200 mm seat recess diameter
Machining length Vertical: 60 mm Horizontal: 17 mm
Valve seat angle machining 
Machining range 55 – 230 mm valve seat diameter
Machining length 30 mm

Case Story:
Knutsen Oas Shipping

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Machine for grinding of valves on high and medium speed diesel engines, and valves and valve seats on smaller 2-stroke diesel engines,.

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Multi-purpose induction tool designed for easy removal of worn valve seats from cylinder heads.