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850X Features | 850X Specifications | 850X Optional Equipment
We make our own tracks, and they go just about anywhere
The CME-850X with its wide tracks and steel grousers can get you to locations considered inaccessible with other machines.
Low ground bearing pressure + high tractive power = maximum mobility
33 inch (83.8 cm) wide tracks spread the surface contact area of this all-terrain tracked drill over more than 9,669 square inches (6.2 m²). Ground bearing pressure is only 2.9 psi (0.2 kg/cm²). That’s less than the average man’s footstep. The CME-850X can go places you can’t even walk. The high flotation allows you to negotiate soft mud, deep snow, or sand. The walking beam suspension easily climbs over rocks and fallen logs. The bottom line is, you won’t have to spend valuable time and money building roads to reach inaccessible drill sites.
Integral design means no compromise
Since we designed the carrier and the track drive system ourselves, they are an integral part of the overall machine. We made sure that the weight is evenly distributed between the front and rear. We also kept the center of gravity as low as possible. That’s why the CME-850X has such exceptional balance and stability. The track drives are located in the rear of the carrier so that the drive sprockets pull the tracks under the carrier. This ensures that the tracks are kept tight at the bottom, where they contact the ground, further improving traction.
Completely self-contained drilling unit
Just getting a drill to a tough location is not enough. That’s why we designed the deck layout to provide plenty of storage area for augers, rods, and other drilling tools. The CME-850X can carry everything you need to get the job done, right on board.
Shift “on the fly” for better control
Each track is independently driven by a hydrostatic transmission circuit for dependable trouble-free operation. The two speed drive motors provide maximum pulling power up to 2 mph (3.2 kph) in low range and speeds of up to 5 mph (8 kph) in high range. The drive motors can be shifted “on the fly” from low to high range without stopping which is advantageous when climbing or descending grades.
Precise steering provides agility
The independent hydrostatic track drive allows you to counter rotate the tracks and turn in place so you can easily maneuver around or between objects. Steering is accomplished by two joystick controllers, one for each track, conveniently located adjacent to the operator. The joysticks provide smooth, positive control for precise mobility. A rocker switch on the top of each joystick controls the engine speed.
Protective belly pan
The under side of the CME-850X is protected by removable belly pans. This not only reduces the possibility of damage to rig components, but also acts as a skid when moving through soft mud and snow. There are no protrusions under the carrier to hang up on logs and rocks.
A roll-over protective structure is standard on the CME-850X. It meets SAE specification J1040C and includes a front brush guard.
Over the road legal
You won’t have to waste time getting expensive over-width permits or worry about being restricted to certain days or hours for transporting the CME-850X. It’s only 8 feet wide. And at just 8 feet, 3 inches (2.5 m) in transit mode, the 850X is commonly as much as two feet shorter than drills mounted on similar track carriers.
Hydraulic feed and retract system provides 28,275 pounds (12,825 kg) of retract force and 18,650 pounds (8,460 kg) of down pressure
Twin hydraulic fuel cylinders mounted in line with the drill spindle give you precise control of force on the drilling tools. For exceptional drilling efficiency, the feed system has two separate controls. One gives you manual control of feed and retract and features both normal and fast retract positions. Retract rates of up to 90 feet (27.4 m) per minute let you add or remove drilling tools quickly. The other is used exclusively for feed and has a detent engaged position. Flow and pressure controls let you dial in a specific feed rate and feed pressure. This system is extremely advantageous in core drilling and other drilling applications that require precise control of feed. And since the two controls are isolated, you can use the manual control for rapid retract without changing the pressure setting for the detent feed control. The distance from the sheaves to the ground is 26 ft (7.9 m). That means you can hoist 20 ft (6 m) of rods or augers with clearance to spare. When equipped with 3 hoists, the CME-850X can pull 60 ft (18 m) of rods or augers without having to lay any down on the ground.
Control logic — the key to operator productivity
Drilling and set-up controls are logically arranged on a control panel located at the driller’s station. For added convenience, we’ve staggered the more frequently used controls, such as the hydraulic hoist and sliding base levers.
Dependable rotary drive provides 15,410 ft/lbs (20,893 Nm) of rotary torque when you need it
You get the torque you need for auger drilling up to 15 inch holes, as well as rotation speeds over 665 rpm for rotary or core drilling applications. With 5 forward gears and one reverse, there is a rotation speed and torque combination available for just about any situation. The rotary drive transmission is driven through a torque converter that provides shock overload protection.
Patented spindle brake stops rotation in an instant†
An emergency spindle brake stops rotation in less than one revolution. This system is activated by two conveniently located push button switches as well as strategically located wobble switches.
Slide bases make the job easier and quicker
A 15 inch (38.1 cm) in-out movement allows you to quickly move the drill off the borehole and align the sheaves for lifting tools with the cathead or any of the hoists. A 6 inch (15.2 cm) sideways movement gives you even more versatility. Aligning augers or rods when making connections is easy, or if a bit drifts off at an angle when you start a hole, you can quickly straighten it to a vertical position. If you have ever tried to line up your rig to an existing borehole, you’ve probably already recognized the benefit of the slide bases.
Patented angle drilling system for special drilling applications†
This unique system is especially effective for drilling underneath ponds, storage tanks or other structures. When used with our patented continuous sample tube system, you even take soil samples while drilling angle holes. The angle drilling system will also allow you to drill vertically with the carrier positioned on an uphill slope. That can eliminate the time consuming job of leveling the rig. And, since the kelly drive is directly connected to the right angle drive box, you can raise or lower the mast with the drivetrain all ready to go.
† Patented by Central Mine Equipment Company
Performance ratings are based on engineering specifications, calculations and accepted industry standards.
Capacities may vary according to drilling conditions. CME reserves the right to amend these specifications at any time, without notice.
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