The total cost of ownership of a mobile crushing plant depends on the purchase price, maintenance, fuel/energy, replacement parts, logistics and staff wages, with costs rising when processing hard, abrasive rock and during round-the-clock operation. Optimising operating modes, carrying out preventive maintenance, using high-quality parts and training staff can reduce costs by 25–30% without compromising productivity.

A mobile jaw crusher consumes energy due to the load, wear and tear on components, and operating conditions. The main factors contributing to excessive energy consumption are the hardness and size of the raw material, and wear on the jaw plates. The calculation is based on the motor’s rated power multiplied by a load factor of 0.6–0.8, multiplied by the operating time, minus the idle time. Preventative maintenance of the jaw plates, appropriate selection of raw material and a reduction in idle time will reduce energy over-consumption by 20–25%.

Calculating the throughput of a crushed stone production line is a key stage in its design and operation, helping to prevent downtime and overloads. A correct calculation involves determining the parameters of the components, modelling the flow of raw materials, and adjusting the figures to suit the specific conditions of the plant. Common errors include ignoring the difference between rated and actual capacity, failing to account for maintenance time, and mismatched throughput capacities of the plant components. The calculations are verified by conducting an 8–12-hour trial run of the line, and the parameters are adjusted if deviations exceed 10%.

Replacing the bearings on a jaw crusher at a quarry affects production stability. The following sequence must be followed: stop and lock the crusher, select genuine bearings from the catalogue, do not use heavy-duty impact tools during removal, and do not heat the bearings above the specified limit during installation. After installation, check the clearance and rotation, carry out a test run, and monitor vibration and temperature.

The hydraulic system of a mobile crusher is of critical importance: early diagnosis prevents costly downtime. Early faults are indicated by unusual noises, minor oil leaks and a slowdown in the operating cycles of the working components. At the initial stage, you can check the oil level, clean the filters and tighten the connections yourself. In the event of severe leaks, pressure surges, etc., call out a technician immediately; do not attempt to dismantle the system yourself.

Mobile crusher servicing in Russia: look for service providers through official dealers or reputable specialist service centres; do not use random mechanics. The cost ranges from 15,000 to 150,000 roubles, depending on the complexity of the work, spare parts required, urgency and the model. To avoid overpaying, draw up a schedule for routine maintenance, compare quotes and clarify what is included in the price.