Robbins 44RH

Low-profile and lightweight raiseboring machine for holes

ranging from 1.0 to 1.8 m in diameter

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 A lightweight
fighter
The Robbins 44RH is a low-profile, lightweight raise boring drill
in Epiroc’s internationally acclaimed Robbins line for both civil
engineering and mining applications. The rig has been optimized for
low ceilings and holes up to 1.8 meters in diameter. Its compact design
offers greater manoeuvrability without sacrificing high torque and
thrust. The Robbins 44RH can be relied on to drill holes of the desired
diameter with greater power and efficiency.

Main benefits
Immense penetration power in constricted work
spaces thanks to its low weight and a height of only 3.25 m

Smart and in full control thanks to Epiroc's intelligent

Rig Control System (RCS)

Built to last with hard wearing parts which are all

replaceable, including the electric components that
comprise the RCS

Detachable pipe loader for

quick, easy installation

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Drive train with hollow shaft for efficient
transmission of flushing media to clear
the pilot hole

Sturdy worktable with manual or optional

hydraulic wrenching system for safe,
efficient pipe threading

Single hydraulic-drive power pack

Handy hose and cable connections for

rapid setup and hassle-free maintenance
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 Purposefully built for power
The Robbins 44RH is a conventional raiseboring drill designed for prime performance in
tough and cramped mining areas. With its sturdy, compact frame and telescopic cylinders,
the rig is a mere 3.25 meters in height.

+ Optimal design
Rigid crosshead columns provide efficient torque reaction to extend the service
life of the thrust cylinders. The rig’s pipe loader with quick detachments enables
easy installation. The sturdy worktable is available with a manual or a hydraulic
wrenching system for fast, efficient pipe threading.

+ Safe, efficient drilling

The Rig Control System provides diagnostics and an event logging system to
improve drilling accuracy, facilitate equipment maintenance and improve rig
reliability. Built-in interlocks prevent setbacks due to human errors. Standard
functions include auto make-up, the gradual ramp-up of power at the start of
drilling, and an anti-jamming with restart function to prevent reamer stall and
minimize downtime. Shutdown is enabled at the end of a stroke for safe, easy
shift changes.

+ Smart options
The Robbins 44RH is available with a hydraulic wrenching system for safer,
more efficient pipe threading. Additional smart options are available, including
a closed-loop cooling unit and a variety of transporters to best suit your needs
on site.

A comprehensive
service offering
Even the best equipment needs to be
serviced regularly to make sure it sustains
peak performance. An Epiroc service
solution offers peace of mind, maximizing
availability and performance throughout
the lifetime of your equipment. We focus
on safety, productivity and reliability.

By combining genuine parts and an Epiroc

service from our certified technicians, we
safeguard your productivity – wherever
you are.

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  = Standard  = Option
Technical specifications A = 44RH  B = 44RH Low profile

Motor Drive and thrust system A B

Two hydraulic motors connected in series Power: 160/185 kW at 50/60 Hz  
Radial-piston type with a rotating cylinder hollow shaft, stationary housing Oil reservoir: 400 l (105 gal)  
Hydrostatic system Oil filtration: 10 microns  
Mineral hydraulic oil grade: 68  

Gearbox Proportional control of fast traverse and pipeloader movements  

Off-line filtration system  
Planetary-type reduction
Individual bearings for reaming and box hole drilling Electric filling pump  
Spherical roller thrust bearing for reaming Water cooled  
Pre-loading of the bearings Fire suppression system  
15 or 20 meter hoses to derrick  
Built-in heater in oil reservoirs  
Drivehead
High pressure filtration  
Floating drive box with DI-22 thread
Traverse circuit
Pressure compensated variable displacement piston pump

Lubrication Travers pump: 140 cm3/rev (8.5 in3/rev)

Oil from the hydraulic system is used for the lubrication of the gearbox assembly: Travers pump max pressure: 230 bar
19 l/min (5 US gal./min) Feed circuit
Filtration: 25 micron Pressure compensated variable displacement piston pump
Water cooled Thrust pump: 40 cm3/rev (2.4 in3/rev)
Trust pump max pressure: 330 bar
Auxiliary circuit
Pipeloader
Fixed displacement gear pump
Easy and safe pipe handling
Auxiliary pump: 22 cm3/rev (1.34 in3/rev)
Sturdy design
Auxiliary pump max pressure: 230 bar
Mounted on either side
Drive system
Remote controlled
Rotation pump: 355 cm3/rev
Max pump pressure: 330 bar

Wrench system Closed loop piston pump

Semi auto-automatic drive head wrench

Hydraulic horse shoe wrench Closed loop cooling system A B
An external air/oil cooler connected to the ordinary cooling circuit  

Electrical system A B
Separate cabinet inside the single power pack   Transporters A B
Standard protection ground fault, over/under voltage   Diesel crawler  
Phase fault and emergency stop   Air crawler  
Thermal overload protection for electrical motors   Sled assembly  
Anti condensation heaters in electrical cabinet   Trailer for power pack  
Built in heaters in the electrical motor  
Direct start of thrust motor   Operating equipment
Power management. If there are power limits on site, this feature moni-
  Drilling tool kit incl. starter bushing, bit breaker box, blooie assembly.  
tor the power outtake of the machine and limits it to a preset value
Makeup and breakout tool  
Auxiliary outlet: V/230 V  
Electrical standards UL, CSA and AS3000  
20 or 30 meter cable to derrick  

Control system A B
Radio remote control for pipe loader  
15 m cable to op-panel  
Power management  
Auto makeup log  
Net force control  
Surveillance kit (angle indication, length sensor,reamer drop detection,
bailing pressure supervision)
 

The advanced radio remote control handles the pipe loader, fast traverse,
auto make up, break out, gear shifting and the hydraulic worktable wrench
 

Measure While Drilling (MWD)  

Bailing pump control  
20 or 30 meter cable to OP-panel  
RRA, Rig Remote Access  
Platform with chair  

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 Operation data
Raise diameter 44RH 44RH low profile
Nominal 1.5 m 5 ft 1.5 m 5 ft
Range 1.0-1.8 m 3.5-6 ft 1.0-1.8 m 3.5-6 ft
Raise length
Nominal 340 m 1 115 ft 340 m 1 115 ft
Maximum 610 m 2 000 ft 610 m 2 000 ft
Maximum torque
Reaming 75 kNm 55 000 ft-lbs 75 kNm 55 000 ft-lbs
Break out 96 kNm 70 805 ft-lbs 96 kNm 70 805 ft-lbs
Reaming thrust
2 000 kN 450 000 lbs 2 000 kN 450 000 lbs
Stroke
1 710 mm 67" 1 235 mm 49"
RPM
Pilot 0-60 rpm 0-60 rpm
Reaming (Reduced torque) 0-16 rpm (16-25 rpm) 0-16 rpm (16-25 rpm)
Traverse rate
Fast traverse rate 5.9 m/min 19.4 ft/min 5.9 m/min 19.4 ft/min
Feed rate 3 m/min 9.8 ft/min 3 m/min 9.8 ft/min
Bailing
Air 13 m 3 min (7 bar) 459 ft3/min (100 psi) 13 m 3 min (7 bar) 459 ft3/min (100 psi)
Water 450 l/min 119 gallon/min 450 l/min 119 gallon/min
Electrical
Power supply 165/190 kW (50/60 Hz) 165/190 kW (50/60 Hz)
Voltage 400-1 000 V 400-1 000 V
Frequency 50-60 Hz 50-60 Hz
Power requirement 198/227 kvA (50/60 Hz) 198/227 kvA (50/60 Hz)
Drill pipe
Diameter 203 mm 8" 203 mm 8"
Optional 254 mm 10" 254 mm 10"
Length s/s 1 219 mm 48" 750 mm 30"
Pilot hole
Diameter 229 mm 9" 229 mm 9"
Optional diameter 279 mm 11" 279 mm 11"
Cooling water

at 25˚C inlet temperature 60 l/min 15.8 gal/min 60 l/min 15.8 gal/min

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Technical specifications
Derrick Power pack
Conventional Raise boring 44RH 44RH low profile Length 3 300 mm 130"
Height extended 3 540 mm 139" 3 250 mm 128" Height 1 690 mm 67"
Height retracted 3 540 mm 139" 3 250 mm 128" Width 1 600 mm 63"
Width 1 780 mm 70" 1 600 mm 63" Weight 4 700 kg 10 362 lb
Width pipeloader included 3 120 mm 123" 2 600 mm 102"
Depth 1 755 mm 69" 1 650 mm 65"
Weight 9 900 kg 21 825 lb 7 500 kg 16 535 lb
Weight pipeloader
10 400 kg 22 928 lb 7 900 kg 17 417 lb
included
Drill angle (from horizontal) 90-45˚ 90-45˚

Derrick. Power Pack.

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9869 0096 01 2018-10 Örebro, Sweden. Legal Notice © Copyright 2018, Epiroc Rock Drills AB, Örebro, Sweden. All product names in this publication are trademarks of Epiroc. Any unauthorized use or copying of the contents
or any part thereof is prohibited. Illustrations and photos may show equipment with optional extras. No warranty is made regarding specifications or otherwise. Specifications and equipment are subject to change without notice.
Consult your Epiroc Customer Center for specific information..