Valve Seat and Recess Lathe / VRL

Multi-purpose tool 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

Valve Seat & Recess Lathe

Valve Seat & Recess Lathe for In-situ Machining

For high-precision machining of valve seats and seat recesses on 4-stroke medium-speed diesel engines.

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VRL valve seat and recess lathe is a multi-purpose high-precision machine for in-situ machining of valve seats and seat recesses on 4-stroke medium-speed diesel engines. With the help of VRL, valve seats and cage valve seats can be restored to their original contact angle, surface geometry and surface roughness.

In addition, VRL can be used for renovation of cylinder heads. For example, when seat pockets have been exposed to corrosion, or have been scratched in connection with change of valve seat. Moreover, the machine is electrically driven, and thanks to its robust design and smart incorporated features, therefore very easy to operate.

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

Its many application areas make VRL a cost-efficient choice. Therefore, owning a VRL means that the cost per job will be approximately a tenth of the cost associated with outsourcing the job. In addition, as service is performed in-house, logistics costs decrease. Moreover, the carbon footprint will be much lower.

When performing the service by yourself you can avoid unnecessary waiting time and keep your engines in top condition at all times. By maintaining engine parts in good condition, fewer investments in new engine parts have to be made, which in turn creates less waste. Last but not least, a healthy engine runs more efficiently and releases fewer emissions.

The VRL is available for several engine makers, likes: Bergen, MAN B&W, Wärtsilä, Sulzer, Caterpillar, etc.

Want to know more about our grinding & machining equipment? Read more here.

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Technical Specifications

Specification	Feature
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

For complete technical specifications, download the product sheet or contact our technical team.

Videos

Accessories & Consumables

Accessories & Consumables

VRL Repair Kit

Various types of spare part kits for maintaining continuous operation.
Cylinder Heads

Valve Seat Remover / MPI

Designed for easy removal of worn valve seats from cylinder heads. The equipment consists of an induction generator which generates a high frequency current to an insulated water-cooled induction coil.
Cylinder Heads

Valve Spindle Grinding Machine / 75H

For grinding of valves on high and medium speed diesel engines, and valves and valve seats on smaller 2-stroke diesel engines, in existing lathes.
Cylinder Heads

Valve Spindle Grinding Machine / BSP30

For grinding of valve spindles on medium and high speed diesel engines.
Cylinder Heads

Working Rig Series / WR

The Chris-Marine range of working rigs has been developed for safe and efficient maintenance of 2-stroke and 4-stroke engine parts. The working rigs are safe and easy to use with a self-locking turning gear. They facilitate a multitude of maintenance operations such as dismantling and cleaning of exhaust valve cages and cylinder heads, as well as when operating a valve seat grinding machine.
Cleaning & Surface Preparation

Spray Washing Machine / SWM

Machine for cleaning of small and medium sized components.