Rock Hole Opener
HOC's flagship Hole Opener – variable size fixed diameter hole opener with cutters engineered and manufactured specific for this tool.

RHO - Rock Hole Opener
Description
HOC's flagship Hole Opener – variable size fixed diameter hole opener with cutters engineered and manufactured specific for this tool. Praised globally as one of the most cost-effective available due to its size versatility.
The RHO is a variable size fixed diameter hole opener with interchangeable arms and cutters. The arms and cutters are designed in size matching pairs that may be used to create a different hole size in another size RHO body, designed in standard 2" increments and can open as many as 8 standard hole sizes.
Features and Benefits
The RHO line is designed to open hole size 7-7/8" through 64" using nine different standard body sizes.
The cutters are carried on the body of the tool and are retained by arms that are held in position with large load screws and backed up by locking screws.
Each properly torqued load screws exert over 250,000 ft. lb of clamping force.
Efficient hole cleaning due to a multitude of uniquely placed jets.
Eliminates need for consumable inventory and the need for size specific bodies. Cutter arms are hard faced for longer life and extended wear.
All cutters are Sealed Bearing with pressure compensating actuator to ensure cutter bearings are continually being lubricated.
Cutting Structures available include:
Tell us your application.
We'll build the right tool.
Our Team works directly with your drilling team to spec the right solutions – no guess work, no catalog shortcuts.