REL Drilling Solutions

C850 Big machine for a big Job!

c850 - Rotary Hole Drills

The REL C850 Super Maxx Blast Hole Drills are designed through Voice Of Customer-driven goals to perform in extremely difficult rock conditions that provide up to 70,000 to 99,000 lbs of bit load for 311 to 349 mm diameter hole applications

The C850 Rotary Blast Hole drill is built to take on the toughest of Mining conditions, designed for longevity for an overall reduced ownership cost.

  • The REL C850 Rotary Blast Hole Drill Machines are designed to drill holes ranging from 9 inch to 11 inch.
  • Structurally sound heavy-duty mainframe is designed for maximum reliability in rugged terrain and mining environment, better layout of the deck, ease of maintenance and enhanced safety.
  • REL C850 Super Maxx Masts designed using Finite Element Analysis to achieve high cycle fatigue resistance and less downtime and costs repairing cracks.
  • Constructed of seamless rectangular tubes braced by Quend plate strength, alloy steel, the mast provides maximum rotary carriage and drill string support.
  • Ergonomically designed, FOPS certified operator’s cab provides excellent visibility and operators comfort. Provided with a clear, unobstructed view of the drilling area and areas surrounding the drill.
  • The REL C850 is available with three Autonomous Package I. Basic One touch II. Fully Autonomous III. Remotely Operated Fully Autonomous Packages.

Drilling the harshest of conditions is the speciality of REL C850

SPECIFICATION Imperial Metric
Drilling Method
Drilling Diameter 12-1/4 to 13-3/4 inch 311 to 349 mm
Pipe Size 10 to 10-3/4 inch 254 to 273 mm
SP – Single Pass depth
Tall Mast 50 ft 15.25 m
REL Super Maxx Drill Mast 60 ft 18.3 m
MP - Multi Pass depth
Tall Mast Carousel (Single pod) 100 ft 30.5 m
Tall Mast Carousel (Three pod) 200 ft 60 m
REL Super Maxx Drill Mast (Single pod) 120 ft 36.6 m
Compressor 2600 cfm – 100 psi 74 m3/min -7 bar
Pull Down Capacity 99,000 lbs 44920 Kg
Pull Up Capacity 99,000 lbs 44920 Kg
Bit Load 108,000 lbs 49,000 Kg
Feed Rate Rapid 49.2 ft/min 15 m/min
Rotary Torque 115400 in-lbs 13038 Nm
Rotary Speed 0-100 rpm
HT Electric Motor 800 HP 596 kW
Engine 900 HP 670 kW
Undercarriage Double Grouser with 800mm width & sufficient rollers
Ground Bearing pressure 18.2 psi 125 kPa
Speed in slope / Plain 0.42 / 0.85 mph 0.68 / 1.37 km/hr
Weight Estimated 324,080 lbs / 335,103 lbs 147,000 Kg / 152,000 Kg

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