CME hollow stem augers are designed for maximum strength, simplicity and durability. CME Augers | CME Auger Sizes | Drilling Supplies Click to see exploded view The key is the coupler. The two most important features of an auger coupling are strength and simplicity. CME gives you both. Our field proven dual key coupler provides a strong connection you can depend on. The simplicity of the design means quicker connections for greater overall drilling efficiency. The coupler also allows you to reverse augers in the hole without worrying about joints coming apart. Each connection also features a patented O-ring seal. Connections are quickly and easily made by simply sliding the joint together and screwing in the auger connector bolts. To uncouple, just unscrew the bolts and slide the joints apart. Field proven design and construction. CME augers are tuff enough to tackle the most challenging drilling conditions. That's because we use only the finest grade steel for all components. We also hard surface the outside edge of the entire auger flight and heat treat the couplings for maximum durability. Auger flighting dimensions, including outside diameter and pitch, are designed to efficiently convey soil cuttings with a minimum of drilling torque. Heavy-duty and extra-heavy-duty augers give you an edge. The CME heavy-duty and extra-heavy-duty augers give you the extra edge you need for today's highly competitive drilling industry. The heavy-duty augers feature larger keys and larger auger connector bolts. The couplings have thicker walls and are tapered so they slide together and apart even easier. This is especially advantageous when you're drilling in fine sands or slits. CME extra-heavy-duty augers have all the features of our heavy-duty augers, plus even thicker tube walls and thicker flighting for maximum strength. These augers are designed for high torque rigs. They'll handle the most demanding job with confidence. Custom augers can solve special drilling problems. When a drilling job presents unique problems, we can supply unique solutions. We will be happy to work with you to fulfill your specific needs. Plus we have numerous custom designs currently available. For example, our double and triple flight augers provide extra strength and weight for starting holes in abrasive or cobble filled formations where maintaining initial hole diameter can be difficult. If your rig has especially high torque and retract capabilities, you might be interested in our 4 1/4 inch [10.7 cm] or 6 1/4 [15.8 cm] SXHD hollow augers. They have oversized connector bolts which provide more surface contact area for greater strength and rigidity to the auger column. These are just a few examples of things we can do for you to help make your drilling program more efficient and therefore more profitable surface.   Click to see exploded view Center hexagon drive system. For larger diameter holes and tough drilling conditions. If your drilling operations include large diameter auger jobs... or, if your frequently drilling in especially difficult formations, CME's center hexagon drive system can save you time and money. Large diameter auger drilling or tough drilling conditions can over torque threaded connection on center drill rods, making them extremely difficult and time consuming to break-out. CME's center hexagon drive system has no threaded connections. You simply slide the box and pin hex ends together and install the drive pin. When coming out of the hole, a slide connector allows you to separate the hollow auger connections and access the hexagon rod connection. You simply remove the drive pin and slide the rods apart. A big advantage in wet sands. Drilling and sampling in wet sands can be a real challenge. During drilling operations, sand tends to pass between the pilot assembly and the inside diameter of the hollow auger. The sand can bridge the annulus of the auger above the pilot assembly and form a plug. This plug will not only make it difficult to pull the center rod string, it will also cause a vacuum to form below the center head. As you rise the center rod string, even more sand will be drawn up inside the center of the augers. CME's center hexagon drive system with reverse flighting lead stem provides an open area between the center head and the inside wall of the hollow auger. This helps to prevent the sand from bridging in the annulus of the auger. The reverse flighting on the lead center stem also works against sand trying to move up inside the auger column. Special alloy steel for maximum durability. CME's hexagon rods are made from special alloy steel and are heat treated for maximum strength and durability. Center hexagon rod systems are available for use with all CME hollow stem augers 3 1/4 inch [8.3 cm] I.D. and larger. Top of Page