RB220 - ROOF BOLTER
"The RB220 is a low profile roof bolter with tramming heights as low as 33 inches. Unlike the RB120 chassis, the RB220 is longer and articulates a total of 80 degrees at the center. This provides the machine with a turning radius of 21 ft 6 inches (655 cm). In addition to articulating left or right, the machine can oscillate up and down at the center bearing allowing it to pivot a total of 8 degrees. This enables the machine to change the angles of approach both at the front and rear of the machine. By doing this, the machine can tram up and down slopes and over undulations that would otherwise ground the machine. To help keep the machine moving in soft ground, power is applied at all four wheels. The RB220 has dual drilling booms that can follow a four bolt pattern without having to move the chassis. Both operators are protected by canopies at the drills stations and an automatic temporary roof support system."
SPECIFICATIONS
Operating Height813.0 mm
BoomDual
FrameArticulated
specifications
Operating Height813.0 mm
BoomDual
FrameArticulated
manuals
TypesTwo parts manuals
TypesOne LinkOne CD which includes all above manuals in electronic format
TypesTwo operation/maintenance manuals/troubleshooting guides
hydraulics
Boom Feed CylinderTwo (2) 6.5 in bore, double acting cylinder on each boom with in line check valve, one per drilling assembly.
Boom Swing CylinderTwo (2) 3.5 in bore, double acting cylinders, one per drilling assembly.
Hydraulic HoseAll main systems hoses are two wire braid rated at 9,000 psi burst pressure; MSHA 2G flame resistant approved; all fittings JIC
PumpFour stage gear pump rated at 35/35/15/15 gpm at 1,770 rpm with spline fit to pump motor.
Reservoir150 gal capacity reservoir with 7 micron return filtration, filter by-pass and “in tank” strainer.
Stab Foot CylinderTwo (2) 4 in bore, double acting cylinders, one per drilling assembly.
Steering CylinderTwo (2) 4 in bore, double acting cylinders.
Sumping CylinderFour (4) 1.5 in bore, double acting cylinders two per drilling assembly.
Valve BanksOne (1) ATRS and vertical articulation valve bank
Valve BanksOne (1) inch tram valve bank at rear of operator's side drilling assembly
Valve BanksOne (1) steering valve bank controlled by means of a joy stick valve
Valve BanksOne (1) cable reel and vertical articulation valve bank
Valve BanksAll valve banks are spring returned, bi-directional with main relief set at 2,000 psi.
Valve BanksAll other pressures are set for each function accordingly.
Valve BanksTwo (2) boom function valve banks, one per drilling assembly
Valve BanksOne (1) tram valve bank controlled by means of a joystick valve in operator's compartment
frame
TypeLow profile with bends utilized where applicable to reduce the number of indeterminate stresses introduced by welding.
dimensions approximate
ATRS reach - with 28x12-15 tires2438.0 mm
ATRS reach - with 32x12.5-15 tires2438.0 mm
ATRS reach - with 35x15-15 tires2438.0 mm
Bolt tightening torque (adjustable)258.0 N·m
Chassis height - with 28x12-15 tires686.0 mm
Chassis height - with 32x12.5-15 tires737.0 mm
Chassis height - with 35x15-15 tires775.0 mm
Chassis overall width2756.0 mm
Drill boom feed1321.0 mm
Drilling feed thrust (maximum)4536.0 kg
Drilling torque (variable)420.0 N·m
Ground clearance - with 28x12-15 tires152.0 mm
Ground clearance - with 32x12.5-15 tires203.0 mm
Ground clearance - with 35x15-15 tires241.0 mm
Inside turn radius2896.0 mm
Maximum boom separation4928.0 mm
Minimum boom separation1067.0 mm
Minimum tramming height - with 28x12-15 tires813.0 mm
Minimum tramming height - with 32x12.5-15 tires965.0 mm
Minimum tramming height - with 35x15-15 tires1003.0 mm
Outside turn radius6553.0 mm
Overall length with ATRS7671.0 mm
Steering articulation80° total
Tram speed - fast0-40 m/min (0-130 ft/min)
Tram speed - slow0-20 m/min (0-65 ft/min)
Wheelbase2007.0 mm
drive train
TypeFour wheel planetary drive; each drive consists of a Fairfield W3B torque hub along with a Char-Lynn series 2000 hydraulic motor
miscellaneous
KitsSeven (7) oil sampling kits
automatic parking brake
TypeTwo spring applied, hydraulic released, fail safe brakes at front of machine.
operator’s drill station area
ComponentsHydraulically operated drill boom and stab foot functions
ComponentsATRS function control and all other positioning function control
ComponentsVertical articulation function control
ComponentsStorage tool tray on each boom for drill steel, starter steel, drill bits and etc.
ComponentsInch tram function control (left hand drilling assembly only)
Components1 in thick, hydraulically adjustable drill station canopy on each drilling assembly
tram station area
Components1 in thick manually adjustable canopy
ComponentsHeavy duty seat
ComponentsFull tram function control
ComponentsPower fill function control
ComponentsVertical articulation function control
ComponentsCable reel function control
ComponentsFour pressure gauges
ComponentsSteering function control
reservoir fill system
TypePower hydraulic fill, allows hydraulic oil to be added to reservoir without hand pumping.
electrical
StartPush buttons at tram and drill stations.
StopTape switch (panic strip) at tram and drill stations that de-energize electrical system and applies automatic brake.
controller
TypeSize 4 vacuum contactors, 1.5 KVA transformer and 150 amp circuit breaker.
RB220 OPTIONS
- voltageblower option
440 Volt AC, Roots Whispair Blower - electrical system with pump motor rated at 80 hp; blowers rated at flows to 81 CFM at 20" Hg. Each vacuum blower is directly belt driven from the electric motor by means of sheaves and “v” belts. - lighting option
MCI Fluorescent Lighting, High - area lighting with one headlight on front and rear for high seam applications up to 10 ft. - cable reel option
19 in diameter for #2/3C Round Cable - 210 ft capacity horizontal type reel for recommended #2/3C, GGC round trailing cable. Unit is supplied with 20 ft of recommended cable. - tram canopy option
Tram Canopy, 2 ft 8 in minimum height - manually adjustable tram canopy with a minimum height of 2 ft 10 in and a maximum height of 3 ft 10 in at 8.5 in ground clearance. - drill chuck option
Dry/Deep Splined Chuck - chuck protrudes above drill head by 1/8 in with no need for drill chuck retention. - atrs option
10 ft Reach, 10 Wide Crossbeam - T-Bar with 10 ft wide crossbeam including rockers arms one primary ATRS cylinder; one secondary cylinder. - tirewheel option
Four 32x12.5-15, 32 in Foam Filled Tires - 20 ply, 32 in maximum form diameter foam filled tires mounted on rim assemblies. - drill speed option
650 RPM Maximum Drill Speed - generated by means of a 1.25" gear width hydraulic motor. - controller coveroil level switch option
Oil Level Switch, Light - low oil shutdown above cover assembly with the addition of a low oil level switch that will electrically shut machine down before oil is dangerously low
Oil Filter Brand Option - schroeder “spinon” oil filter 7 micron return side filter the filter is equipped with bypass and external dirty filter indication
Blower Exhaust Location Option - left side operator’s side at rear of machine
Roof Bolter Accessories - preduster installation remote tank with a 04 cu ft capacity that removes larger dust particles automatically when stab cylinder is activated###grease zone lubrication installation###torque gauge installation monitor the amount of torque being applied to the roof bolts during installation one gauge for each drilling assembly