Electromechanical workshop

To make this process as effective and safe as possible, we use:

• copper wire with a rectangular cross-section for reliable and durable winding,
• modern insulation materials for stable operation even in difficult conditions,
• thermal protection of windings and bearings, which prevents overheating and extends the service life of the motor.

Thanks to this approach, OSK-TECHNOLOGY electric motors combine high energy efficiency, reliability, and long service life even in potentially explosive or harsh industrial environments.

Purpose

OSK-TECHNOLOGY electric motors are designed to reliably drive key industrial equipment. They operate where stability, endurance, and safety are required, including in potentially explosive atmospheres.

Our motors are used to drive:

• scraper and belt conveyors – continuous and stable transport of materials;
• roadheaders and mining combines – operation in the harshest conditions of mines;
• pumping and ventilation units – continuous support of vital systems;
• other mining and industrial equipment where proven reliability is required.

Thus, our electric motors form the basis of mining, extraction, and processing equipment, ensuring its efficiency and safety.

Areas of application

OSK-TECHNOLOGY electric motors are successfully used in various industries where reliability, durability, and safety are required.

• mining industry – drive equipment for coal, ore, and mineral extraction;
• coal and ore mines – operation in environments with an increased risk of gas and dust explosions;
• conveyor and transport systems – continuous movement of materials in production;
• in mechanical engineering and metallurgy – stable operation of units in harsh conditions;
• in specialized equipment in potentially explosive atmospheres where a special level of safety and certification is required.

Our engines offer the following advantages:

• Explosion-proof design – certified for operation in potentially explosive atmospheres (category I).
• Fully interchangeable with previously popular models (e.g., 2EDKOF250), but with improved performance.
• Reliable components – use of SKF bearings from official suppliers.
• Protection against external influences – IP54 standard, optionally IP56 for operation in harsh conditions.
• Thermal protection system – sensors (NC, PTC, Pt100) for monitoring the temperature of windings and bearings.
• Reinforced housing and flange design in high-power motors.
• Modern materials – copper windings, insulation, and vacuum impregnation for durability.
• International certification – compliance with DSTU, ISO, IEC, CE.

What we do during repairs

• complete disassembly, defect detection, assembly, and heat treatment (annealing);
• overhaul of inductor and armature windings with coil replacement;
• stator and rotor restoration (new winding, stretching, insulation);
• vacuum-pressure impregnation to increase the strength and reliability of insulation;
• repair and grinding of collectors, brush assemblies, and brush holders;
• restoration of explosion-proof surfaces;
• restoration of bearing seats on shafts and bearing shields;
• rotor recasting (aluminum) or manufacture of new copper-brass winding;
• dynamic balancing of rotors on a modern balancing machine;
• replacement of SKF bearings, seals, and fasteners.

• Initial diagnostics – visual inspection, insulation resistance measurement, interturn short circuit testing.
• Disassembly and mechanical processing of components (shafts, shields, housings).
• Restoration of windings and insulation followed by vacuum impregnation.
• Assembly and adjustment – centering, bearing tension, brush apparatus adjustment.
• Bench testing – final check before shipment to the customer.

We guarantee that the refurbished engine meets all safety and reliability requirements, as it undergoes:

• electrical tests (insulation resistance, high voltage testing, checking the operation of NC/PTC/Pt100 temperature sensors);
• mechanical tests (vibration level, noise, rotor balancing);
• trial start-up under load or idle mode on a certified test bench;
• acceptance tests before delivery to the customer.

Our quality control capabilities:

• work on certified test benches with load, balancing units, and vacuum impregnation machines;
• own laboratory where insulation materials, components, and finished windings are tested;
• constant monitoring of product compliance with international standards.