by ep | Jul 14, 2026 | Mining & Construction
Mining drill rigs — rotary blast hole drills, surface top-hammer rigs, and rotary core drilling machines — rely on planetary gearboxes at the rotary head, the feed system, and the carousel indexer. The head drive must deliver high torque at low rotational speed during...
by ep | Jul 14, 2026 | Mining & Construction
The final drive on a bulldozer is the last mechanical stage between the hydraulic transmission and the track drive sprocket — the component that must endure the full tractive force of the machine, transmit it reliably through extreme shock loads when the blade strikes...
by ep | Jul 14, 2026 | Mining & Construction
The cutter head drive on a tunnel boring machine (TBM) is the most powerful planetary gearbox installation in any civil construction project — a large-diameter TBM for a metro rail tunnel may drive 8–16 independent planetary gearboxes in parallel, each producing 500–1...
by ep | Jul 14, 2026 | Mining & Construction
The travel drive on a hydraulic excavator propels the machine across the ground on crawler tracks — from site positioning at up to 6 km/h to digging setup movements at centimetre precision. The planetary gearbox inside the travel motor assembly must deliver enough...
by ep | Jul 14, 2026 | Mining & Construction
The swing drive on a hydraulic excavator rotates the entire upper structure — boom, arm, bucket, cab, and counterweight — around the vertical slew axis above the undercarriage. A 20-tonne excavator’s upper structure weighs approximately 12 tonnes and must swing...
