LTH Castings d.o.o


LTH Castings in Slovenia was founded in 1948, the first die-casting machine installed in 1958. Today, the company consists of production sites in Škofja Loka  (headquarter) and Ljubljana. A combination of more then 50 years of die-casting and tool making experience in  Plant Škofja Loka, of a young and ambitious engineering team and an excellent infrastructure in  Plant Ljubljana has proved itself to be successful and efficient.

Today the facility manufactures a wide range of high specification automotive components, such as transmission and engine components, steering and brake systems components. With a high level of customer-specific product know-how, in-house tool-shop and experience gained over decades LTH Castings involves itself in projects at an early stage through the use of simultaneous engineering, and can thus respond flexibly to customer preferences.

Core competences

  • Simultaneous engineering, numerical simulations, process development, design finalisation
  • Die-casting and machining of aluminium parts

  • Prototype and serial tool design and manufacturing
  • Processing of alloys:
    - EN AC 46000 (AlSi9Cu3, Al226)
    - EN AC 44300 (AlSi12, Al230) 
    - EN AC 47100 (AlSi12Cu, Al231)
    - EN AC 43500 (AlSi10MnMg, Al-S36)
  • Additional Services:
    - Heat treatment of aluminium parts
    - Silicon seal deposition
    - Impregnation
    - Assembly
    - Washing /Degreasing up to particle level 500µm /Clean room
    - Friction Stir Welding

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Strategic focus

  • Quality first approach
  • High specification middle sized machined parts (Site Škofja Loka)
  • Larger machine sizes (machines up to 2.800t, Site Ljubljana)
  • Combine engineering services with highly efficient production process
  • Further development of automation

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Key products


  • Die-cast tools
  • Deburring tools
  • Clamping devices

Series production:

  • Powertrain components
  • Steering components
  • Braking components
  • Electronic components
  • Anti - vibration components
  • Hybrid - and E-engine components

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LTH CASTINGS - Škofja Loka plant


LTH CASTINGS -  Ljubljana plant


LTH CASTINGS -  Trata plant / Toolshop
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