Valve Seat Lathe / VSL

Portable lathe for in-situ machining of valve seats on 4-stroke diesel engines.

From 50–230 mm diameter
Machining angles set according to customer’s requirement
Superior to grinding alternatives
Stepless adjustable rotation speed
Adjustable machining diameters
Self-centering pilot spindle
Pre-set angles
Automatic feed mechanism
Electrically driven
Superior to grinding alternatives

Portable Valve Seat Lathe

Valve seat lathe for in-situ machining of valve seats

Portable valve seat lathe VSL is developed for machining diesel engine valve seats from ø 50 – 230 mm at 20 – 50° angle and designed as a professional tool for machining valve seats on medium speed diesel engines both onboard and ashore.

How does VSL work?

The valve seat lathe is secured to the cylinder head or valve cage (housing) when turned upside down. The machine rotates as it feeds the cutting tool over the valve seat at the predetermined angle. Due to its sturdy design and incorporated features, a high-quality result is achieved quickly, even under the most demanding operating conditions. VSL is portable electrically driven, easy to operate and has the following features:

Long life squirrel cage motor for machine rotation
Stepless adjustable rotation speed
Adjustable machining diameters
Self centring pilot spindle
Adjustable grinding angles from 0-50°
Precision angle setting by means of a dowel
When not in use, the portable lathe and accessories are stored in the storage box (protective carrying case).

The VSL is available for most engine manufacturers, like: Bergen, MAN B&W, and Wärtsilä

VSL – a sustainable machine

VSL is a robust high-precision machine that can be operated by one single person. It enables large quantity, in-situ machining, while minimizing waste and emissions. This means that that the cost per job will be much lower compared to when outsourcing the job. In addition, as service is performed in-situ, logistics costs decrease, thus the carbon footprint will be significantly lower. The machine is therefore a very cost efficient choice.

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.

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

Lean more about us by watching our corporate video!

Technical Specifications

Specification	Feature
Machine capacity	50 – 230 mm seat diameter
Weight	Basic machine 13 kg, Spindle compl. 2 – 13 kg
Max dimensions	H: Machine 405 mm + Spindle 185 – 1100 mm, W: 188 mm
Electric power supply	1-phase 180 – 252 V, 48 – 62 Hz
Power requirement	0.37 kW
Feeding	32 mm

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

Videos

Accessories & Consumables

Accessories & Consumables

VSL Repair Kit

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

Valve Seat and Recess Lathe / VRL

Machine for in-situ machining of valve seats and seat recesses on 4-stroke medium speed diesel engines.
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 / 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.