Machine assembly

Engineering tailored to your needs. We specialize in custom manufacturing of machinery, equipment, and structures—from material selection to final assembly.

Truly comprehensive engineering solutions

Originally founded as a hub for developing and manufacturing underground coal mining machinery, OSTROJ has contributed to numerous unique engineering projects throughout its history. From tunneling equipment for the Strahov Tunnel in the 1980s to today’s production of loading platforms and other airport support technologies.

Our services go beyond component manufacturing, such as welded structures and precision-machined parts—we also provide complete assembly of equipment up to 50 tons. Additionally, we assist with optimizing production processes, sourcing components, logistics, and operator training. Everything is designed to maximize efficiency and cost savings in our customers’ manufacturing operations.

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.

Assembly
from A to Z

Every piece of equipment undergoes thorough testing to meet the highest standards of quality and performance. Our services include not only mechanical assembly, electrical installation, and hydraulic system assembly but also comprehensive diagnostics and final commissioning.

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

Wet painting

We provide a wide range of surface treatments. We achieve the highest quality in industrial painting, which includes high-pressure degreasing with optional phosphating, steel grit blasting, filling, and surface preservation. We apply coatings using both standard air and high-pressure spraying techniques.

Comprehensive documentation of the entire process is standard – including process flow, time records, temperatures, thickness of individual layers, and roughness measurements after blasting.

Dimensions up to 1900×500×400 mm
Weight up to 50 t
Blasting with a quality rating of up to Sa3 and an anchoring profile of 30–60 µm

References

For nearly 80 years, we have been manufacturing equipment for work both above and deep below the surface. Explore our reference projects.

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Radek Juchelka
Head of Sales, Machinery Division

OSTROJ a.s.
Tesinska 1586/66
746 01 Opava, CZ