Instructions
Three percussion frequency options.
Applicable for 178mm casing drilling.
Two rotation speeds optional by selecting the hydraulic loop.
Parameter
Product Video
FAQ
1. What is the YONDA YDH802?
The YDH802 is a hydraulic rotary percussion drilling head that combines rotation and hydraulic impact functions. It is designed primarily for anchoring, water well, casing and foundation drilling applications.
2. What applications is the YDH802 suitable for?
The YDH802 is suitable for anchoring, water well drilling and casing advancement. Depending on the drilling rig and tooling configuration, it may also be evaluated for micropile, foundation reinforcement and geotechnical drilling projects.
3. Can the YDH802 drill with 178 mm casing?
Yes. The YDH802 is designed for drilling with 178 mm casing, which is approximately 7 inches. Actual drilling diameter and depth depend on the casing specification, ground condition, drilling tools, feed force and hydraulic capacity of the rig.
4. Can the YDH802 be installed on an existing drilling rig?
Installation on an existing drilling rig can be evaluated after checking the hydraulic pressure and flow, mounting dimensions, guide rail, center height, feed force, drill string and drive-shank configuration. An adapter or customized mounting interface may be required.
