Features & Options
Multiple shaft sizes available with Box x Box Threads.
Front Stabilizer Bars
Stabilizer Bars facilitate centering the Hole Opener in the bore hole. Carbide Insert Stabilize Bars are standard on 30″ and smaller Hole Openers.
Front Stabilizer Ring
Front Stabilizer Rings are standard on 34″ Hole Openers and above to facilitate centering the larger Hole Openers in the bore hole. Hard Facing is Standard on all rings.
Replaceable Arm and Cone Assemblies are available in three different bearing sizes 17″, 22″ and 26″ with three different cutting structures incorporating TCI Conical and Chisel profiles as well as Milled Tooth.
Nozzle Posts are available to assist in hole cleaning along with Interchangeable Carbide Jets from 8/32nd to 24/32nd. All Hole Openers incorporate jets between each arm assembly. In addition, Hole Openers 36″ and under include a rear body jet to enhance the hole cleaning ability at the face or assist in cutting removal in the rear.
Solid Bodies virtually eliminate cutter flex maximizing the energy directed at fracturing rock. Every solid body is precision machined with a Patented Pocket Design and Integrated Fluid Chamber.
Our Patented Pocket design ensures the integrity of Arm & Cone Assemblies.
Rear Gussets are standard for increased strength and easy removal from the bore hole. Hard Facing is standard on all gussets.
Rear Plates are optional and assist in tool removal by reducing drag.
Century Hole Opener design
By offering the industry a re-buildable Hole Opener design, Century has turned an otherwise disposable piece of equipment into an asset. Multiple cutting structures can be inserted into one body allowing for a truly versatile tool designed to be used over and over again.
Incorporating key industry principles, the Gold Series Hole Openers are engineered to provide solutions in the most stringent drilling conditions.
- Precision-machined solid body welded to a Shaft
- Patented pocket arm design
- Replaceable Arm & Cone Assemblies
- Sealed roller journal bearing technology
- Largest cross section seal in the industry
- Active Gage Protection
- Shirttail Protection
- Advanced hydraulics features
- Multiple point stabilization options
Engineered Design Advantages:
- Provide greater cutting action with larger carbide inserts
- Eliminates the need for extra reaming passes with larger cones
- Extends the bearing and seal life with reduced cone revolutions
- Allows increased load capacities due to larger bearings
Built in stabilization features results in a well-balanced tool machined to exacting standards. Interchangeable jet nozzles, job specific front stabilizers and rear stabilizers for increased strength and easy borehole removal are integral components of every custom or off the shelf Hole Opener.
A full line of Tungsten Carbide Inserts (TCI) and Milled Tooth cutting structures are available for a wide variety of formations. Gage Protection features for longer in-gage bit life along with Shirttail/Leg Protection for superior wear resistance are incorporated into both series. The Milled Tooth design uses the most advanced metals to attack the toughest applications.
Diversified Market Segments
Incorporating innovative features into every Hole Opener is the focus of Century’s R & D. With worldwide sales across the Americas, Europe, Middle East, Africa and the Pacific Rim, Century’s Hole Openers reach diversified markets in the Oil, Natural Gas, Water and Sewer industries.
Expect and Demand the Best – That is what we offer!