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Mining machines

We have been manufacturing equipment for underground mining since 1948. This enables us to offer a wide range of products for extraction, transportation, and processing of various materials, including coal, ores, and other raw materials.

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Reliable solutions for underground mining

OSTROJ was founded as a center for the development and production of machinery for underground coal mining. Today, our focus is primarily on supplying systems and spare parts for mechanized supports used in longwall mining.

Beyond mining itself, we specialize in delivering transportation systems for moving coal, ores, gravel, and other raw materials. This includes conveyor belts, loaders, and other equipment that facilitate the transport of extracted materials from the mining site to processing or storage locations.

Our extensive experience and technical expertise are trusted by mines worldwide, from the frozen Siberian tundra to the scorching deserts of the western United States.

Our customers

Why choose OSTROJ?

80 years of experience

Leveraging decades of expertise and know-how in underground mining.

In-house production

From development to quality control, everything happens under one roof.

Cutting-edge technologies

Robotics, virtual reality, 3D printing, and skilled manual craftsmanship.

Customer service

Assembly, expert consulting, post-warranty service, and general overhauls.

Spare parts
and components

We manufacture and supply spare parts for our own mining machines as well as equipment from other manufacturers. Thanks to our extensive experience, we can provide truly customized components, with a focus on fast delivery and global logistics.

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Development and production
under one roof

Our machines and equipment are created directly at OSTROJ in Opava, where we control the entire production process – from the initial design to final assembly. For highly specialized parts, such as sophisticated electronic components and software, we rely on partners who share our commitment to quality and precision.

Design and engineering of equipment

On-site assembly

Operator training

24/7 technical support

Warranty and post-warranty service

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Thorough technical inspection

The zero-defect strategy is our standard. Thanks to modern quality management systems and technical inspection, we ensure precision throughout the entire production process. We are equipped with state-of-the-art 3D measuring stations and advanced non-destructive testing methods.

Pressure testing

Balancing

Dimensional inspection – 3D measurement

Non-destructive testing of internal welds using ultrasound

Non-destructive testing of internal welds using magnetic testing

Comparative analysis – augmented reality

IWE/EWE welding supervision

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