Alva Engineers

The HYCON HRD28X Underwater is a high-performing handheld rock drill designed for the most demanding drilling applications in rock and concrete.

Using standard integral drill steel with air-flushing from an external compressor and a high-performing hydraulic impact and rotation unit makes the HRD28X a lighter, more powerful, and more efficient rock drill.

The HRD28X rock drill is ideal for anchoring holes and splitting holes measuring Ø25-50 mm.

Combined with a compressor of your choice, this rock drill is made for underwater drilling, making it the professional divers’ rock drill choice no. 1.

This two hand operation drill powered by HFA-Emulsion (min. 0,3%) for closed circuit, usable for underground coal mining.Other tool holders possible on request.Energy source: HFA emulsion (0,3%)Operating pressure: 250 barTool holder: PN-93/G-57000Diretion of rotation: right

Technical DataORDER NO. 2 3053 0010ATEX Specification IM2ExhIMbT6Energy source HydraulicOperating pressure 250 barTool holder PN-93/G-57000Direction of rotation rightFunction drillingTorque 95 NmSpeed (free) 850 rpmVolume flow 28 l/minHydraulic hose connection STECKO 8/10Hydraulic medium HFA emulsion (0,3%)Hydraulic circuit type closed circuitOil filtration class level of purity 100 µmTemperature of oil +5 up to +50 °CNoise level LpA 85.2 dB(A)Noise level LWA 96.2 dB(A)Vibration level (concrete/in lime sandstone) 15.8 (3.4) m/s²Weight 6.8 kgFields of application / branch Mining; Plant and mechanical construction

This two hand operation impact drill powered by HFA-Emulsion (min. 0,3%) for closed circuit, usable for underground coal mining.Other tool holders possible on request.Energy source: HFA emulsion (0,3%)Operating pressure: 250 barTool holder: PN-93/G-57000Function: impact drillingDiretion of rotation: right
Technical DataORDER NO. 2 3054 0010ATEX Specification IM2ExhIMbT6Energy source HydraulicOperating pressure 250 barTool holder PN-93/G-57000Direction of rotation rightFunction impact drillingPercussion (free) 8,500 rpmTorque 95 NmSpeed (free) 850 rpmVolume flow 28 l/minHydraulic hose connection STECKO 8/10Hydraulic medium HFA emulsion (0,3%)Hydraulic circuit type closed circuitOil filtration class level of purity 100 µmTemperature of oil +5 up to +50 °CNoise level LpA 85.2 dB(A)Noise level LWA 96.2 dB(A)Vibration level (concrete/in lime sandstone) 15.8 (3.4) m/s²Weight 6.8 kgFields of application / branch Mining; Plant and mechanical construction