Sandvik HF820T hydraulic rock drill is designed for drilling 64-127 mm diameter holes. This rock drill belongs to Sandvik hydraulically controlled surface and underground long hole drill rigs.
Sandvik HF820T is a heavy hydraulic percussive rock drill with independent rotation and separate flushing. High drilling capacity and reliability are enabled by functional modules. Sandvik HF820T is equipped with a hydraulic stabilizer to control contact between drill bit and rock. This ensures optimal drilling performance with high drill steel life time. Three rotation motor options are available for torque/speed adjustment.
Optional Power Extractor guarantees trouble-free drilling in extreme conditions. The design is covered by several patents.