Central Mine Equipment Company

- Model CME-750X - Rubber Tire ATV Mounted Drill



The CME-750X is a 25 year veteran of the drilling industry. That means you get drilling performance and dependability, second to none.

The CME-750X gives you the versatility to tackle almost any job. 

Since it’s not oversize, it is easily transported on a trailer. Any time of the day, any day of the week, without special permits. The rubber tires will not damage most paved surfaces. And a front axle disconnect allows you to shift from 4-wheel to 2-wheel drive to prevent axle wind-up when driving on hard pavement.

When the going gets rough, the CME-750X really proves its value.

This all terrain drill lets you bid confidently on jobs that are hard to get to. It can eliminate the need for expensive access roads. You won’t find yourself wasting valuable time waiting for a bulldozer to pull your truck-mounted rig out of the mud. No more rescheduling jobs until weather improves and the ground dries up and the snow melts. No more turning down jobs because you can’t get to the location.

Low ground bearing pressure also means less impact on the environment.

Ground bearing pressure is only 9.0 psi [0.632 kgf/cm2] to 10.5 psi [0.738 kgf/cm2], depending on tools on board. Compare that to the 35 psi [2.45kgf/cm2] to 50 psi [3.5 kgf/cm2] ground bearing pressure of a truck-mounted drill. This high flotation lets you negotiate mud, snow, sand, and rocks… all with less damage to the terrain. That can be extremely important in environmentally sensitive areas such as parks, farms or golf courses.

Planetary front and rear axles with no-spin differentials and aggressive all-terrain tires… the ultimate combination for off road traction. Planetary axles put the gear reduction at the wheels. That means less stress on other drive train components. And no-spin differentials give you true 4-wheel pulling power. The 48 inch [122 cm] diameter tires are flexible and tend to flatten out on the bottom. This provides more ground contact and lower ground bearing pressure per square inch. They also tend to flex and envelope obstacles, rolling over objects that could cut into firmer tires.

For optimum drilling performance, we designed the CME-750X to be heavier in the rear. So, to keep the ground bearing pressure equal on all four wheels, we put wider, 31 inch [78.7 cm] tires on the rear, compared to 25 inch [63.5 cm] wide tires up front. The front axle oscillates when traveling on uneven terrain, allowing all four tires to remain on the ground for better traction and load distribution. Hydraulic, wet disc type, service brakes are located at each wheel for maximum stopping power. And since they are enclosed in the planetaries, they are not adversely affected by mud and water. An independent, mechanically applied, hydraulically released, disc parking brake on the driveline is also provided.

High ground clearance. 

The underside of the CME-750X is protected by a steel belly pan with 22 inches (55.9 cm) of ground clearance. There are no protrusions under the carrier to hang up on logs or rocks.  In order to keep the center of gravity as low as possible, we mounted the drill to the carrier frame, in between the tires. We also mounted the two water tanks underneath the deck. Their combined capacity is 220 gallons [833 L].

Single engine provides big savings.

Power for both driving and drilling is provided by a 409 cubic in. [6.7 L] turbocharged and charge air cooled Cummins diesel engine. This single engine means bigger savings in your initial investment, as well as overall weight, space and maintenance.

ROPS protection is standard.

A roll-over protective structure is standard on the CME-750X; it meets SAE specification J1040C.

Integral design gives you a completely self-contained drilling unit with no compromises.

Since we designed the carrier ourselves as an integral part of the overall drill, we were able to utilize all the space to the best advantage. The deck layout provides plenty of easily accessible storage area for augers, rods, and other drilling tools.

The 126 1/2 inch [321.3 cm] wheelbase accommodates 5 foot [1.5 m] augers in a rack below deck, between the front and rear tires. Lockable tool boxes are provided on both sides of the drill. The CME-750X can carry everything you need to get the job done.

Hydraulic feed and retract system provides 30,000 pounds [13,608 kg] of retract force and 20,000 pounds [9,072 kg] of down pressure.

The hydraulic vertical drive system has no chains which need lubrication or cables which can stretch. It gives precise control of force on the drilling tools.

For exceptional drilling efficiency, the feed system has two separate control levers. One lever gives you manual control of feed and normal retract. The other lever is used for fast retract and detent feed. Retract rates of up to 78 feet [24 m] per minute let you add or remove drilling tools quickly.

Pressure controls let you dial in specific feed rate and feed pressure. This system is extremely advantageous in core drilling and other operations that require precise control of feed.

And since the two control levers are isolated, you can use the manual control for rapid retract without changing pressure settings for the detent feed control.

The distance from the sheaves to the ground is 27 feet, 5 inches [8.4 m]. That means you can hoist 20 feet (6 m) of rods with clearance to spare. When the CME-750X is equipped with three hoists, you can pull 60 feet [18 m] of rods without having to lay any down on the ground or on the deck.

Control logic – the key to operator productivity.

Drilling and set-up controls are logically arranged on a control panel. For added convenience, we’ve staggered the more frequently used controls, such as the hydraulic hoists and sliding base levers.

Dependable mechanical rotary drive provides 10,230 foot pounds [13,870 Nm] of rotary torque, plus high rotation speed when you need it.

You get the torque you need for auger drilling, as well as rotation speeds over 740 rpm for rotary or core drilling applications. Other optional rotation speed and torque combinations are also available, including a high-torque rotary drive that gives you 12,950 foot pounds [17,557 Nm] of torque.

With five forward gears and one in reverse, there’s a rotation speed and torque combination available for just about any situation. And since the transmission does not travel vertically with the spindle, you won’t find yourself unable to change gears at the top of the feed stroke.

A torque limiting clutch, which is adjustable by turning three bolts, provides protection against shock overload.

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 by strategically located wobble switches.

Slide base makes the job easier and quicker.

The drill is mounted to the carrier on a hydraulically actuated sliding base. A 15 inch (38.1 cm) in-out movement allows you to quickly move the drill off the bore hole and align the sheaves for lifting tools with the cathead or any of the hoists.

A 6.0 inch (15.2 cm) sideways movement gives you even more versatility. Aligning augers or rods when making connections is easy. Or if the 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 on an existing borehole, then you’ve probably recognized another benefit of the slide bases.


  • Cummins QSB 6.7L [409 cubic inch] 6 cylinder turbocharged diesel engine. U.S. EPA Tier 3 emissions certified.


  • Tire size:
    • Front...48 inch [122 cm] diameter x 25 inch [63 cm] wide x 10-ply
    • Rear...48 inch [122 cm] diameter x 31 inch [78 cm] wide x 12-ply
  • Ground Bearing pressure:
    • 9 psi [.632 kgf/cm2]
  • Transmission:
    • 5 speed forward, 1 speed reverse
  • Axles (front and rear):
    • planetary with no-spin differentials
  • Steering:
    • hydraulic power
  • Front winch:
    • 15,000 pound [6,804 kg]

Rotary drive

  • Standard Rotary Box
    • 10,230 foot pounds [13,870 Nm] max
    • 740 rpm max
  • High Speed Rotary Box (optional)
    • 8,180 foot pounds [11,090 Nm] max
    • 930 rpm max
  • High Torque Rotary Box (optional)
    • 12,950 foot pounds [17,557 Nm] max
    • 580 rpm max
  • Transmission:
    • 5 speed forward, 1 speed reverse
  • Hollow spindle I.D.:
    • 2¾ inch [7 cm] ( 3¾ inch [9.5 cm] available)

Hydraulic feed system

  • Retract force
    • 30,000 pounds [13,608 kg]
  • Pulldown force
    • 20,000 pounds [9,072 kg]
  • Rapid Retract rate (max)
    • 78 feet [24 m] per minute
  • Retract rate (max)
    • 30 feet [9 m] per minute
  • Feed Rate (max)
    • 48 feet [15 m] per minute
  • Stroke
    • 72 inch [183 cm]

Leveling system

Three jacks, inverted design with chrome-plated piston rods enclosed at all times.


  • 36 inch [91.4 cm]

Automatic hammer

Our 140 pound [63.5 kg] automatic hammer gives you extremely consistent and accurate Standard Penetration Test results, meeting all ASTM-D-1586 requirements. That’s because there are no ropes or cables to impede the free fall of the weight.

The hammer swings from stored position to on-hole position. Since raising and lowering is done hydraulically, set up is quick and almost effortless.

For maximum safety, all moving parts are enclosed, including the impact area between the weight and the anvil. A 340/140 pound [154/63.5 kg] hammer is also available.

Quick mast disconnect

This feature allows you to quickly disconnect the mast when working inside buildings, underneath bridges or in other low overhead drilling locations. Since the mast is completely separated from the upright, is doesn’t interfere with other drill functions such as the in-out slide base.

With the mast in the horizontal position, you simply clamp it to its storage rack and extend the drill’s in-out slide base. This pulls the sockets on the upright drill frame away from the large tapered pins on the mast.

Hydraulic rod holder and breakout wrench

The hydraulic rod holder makes your job quicker and safer. It not only pivots from on-hole to off-hole positions, but also hydraulically moves in and out. For efficient operation, the breakout wrench is mounted at the pivot point of the rod holder arm.

Patented angle drilling system

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 can 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 an area on which to place the rig.

And, since the kelly drive is directly connected to the right angle drive box, you can raise and lower the mast with the drivetrain already connected and ready to go.

Additional optional equipment

  • Continuous sample tube system
  • High torque rotary drive
  • Underside sheave
  • Low clearance sheave
  • Auger and rod guides for angle drilling
  • Fluted kelly and chuck assembly
  • Drill rod chuck
  • Spindle adapter
  • Utility air tool system
  • Cathead, 8 inch [20.3 cm] diameter
  • Hydraulic hoist
    • 1,800 pound [815 kg], max line speed 173 ft./min [53 m/min]
    • 3,200 pound [1,452 kg], max line speed 87 ft./min [26 m/min]
    • 8,500 pound [3,856 kg]
      • max line speed 62 ft./min [19 m/min]
      • max line speed 269 ft./min [82 m/min]
  • Hydraulic wireline hoist
    • 900 pound [408 kg], max line speed 345 ft./min [105 m/min]
    • 1,800 pound [816 kg], max line speed 170 ft./min [52 m/min]
  • Water pumps
    • Moyno Progressing cavity
      • 36 gpm/225 psi [136 lpm/1,551 kPa]
      • 84 gpm/225 psi [318 lpm/1,551 kPa]
    • FMC/Bean
      • 25 gpm/500 psi [ 95 lpm/3,448 kPa]
      • 35 gpm/500 psi [132 lpm/3,448 kPa]
    • Gardner-Denver 4½ x 5
      • 148 gpm/197 psi [560 lpm/1,358 kPa]
    • Other pumps available

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