Instructions
The YONDA YDH603 combines hydraulic rotation and percussion for 146 mm casing drilling. Its three-speed hydraulic rotation system allows speed and torque selection through hydraulic circuit switching, delivering a maximum rotation torque of 17,250 Nm.
With three percussion frequency options and three rotation settings, the YDH603 offers flexible output selection to suit drilling requirements.
Key Features
- Casing drilling capability: Suitable for 146 mm casing drilling.
- Three-speed hydraulic rotation: Maximum speeds of 92, 46 and 30 rpm across three settings.
- High torque output: Maximum torque of 5,750, 11,500 and 17,250 Nm across the respective settings.
- Three percussion frequency options: Selectable percussion configurations to suit drilling requirements.

Parameter

Product Video
FAQ
1. What drilling applications is the YDH603 suitable for?
The YDH603 is a hydraulic rotary percussive drill head suitable for 146 mm casing drilling. The final configuration should be checked against the casing, drilling tools, ground conditions and rig capacity.
2. How is the rotation speed selected?
The three rotation settings are selected by switching the hydraulic circuit, allowing different speed and torque combinations to suit drilling requirements.
3. What hydraulic supply does the YDH603 require?
The catalogue specifies 180 bar and 70–90 L/min for the percussion circuit, and 205 bar and 170 L/min for the rotation circuit. The rig's hydraulic system must be checked against both circuit requirements before integration.
4. What information is needed to assess compatibility with an existing rig?
Please provide the rig model, available hydraulic pressure and flow, mounting dimensions, feed and pullback capacities, and casing and drilling tool specifications. The YDH603 has a catalogue weight of 620 kg, which must also be considered when assessing mast capacity and the overall rig configuration.






