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Caterpillar Global Mining
Cat® MD6290 Rotary Blasthole Drills

Cat® MD6290 Rotary Blasthole Drills

Product catalog summary

Specifications
The document details the specifications of the Rotary Blasthole Drill—MD6290. Key specifications include:

Rated Capacity: Bit/hole diameter ranges from 152-270 mm, with depth capabilities up to 52.7 m in multi-pass drilling.
Operating Temperature: Standard range from -28°C to 52°C, with an option for cold weather down to -40°C.
Pull-down/Hoisting Capacity: Rated pull-down capacity up to 267 kN, with a feed rate of 0-42.9 m/min.
Rotary Drive System: Rotation speed of 0-220 rpm and torque up to 12,880 Nm, powered by a 139 kW engine.
Cooler Assembly: Configurations for different engines, fan speeds up to 1,700 rpm, and ambient ratings of 52°C.
Compressor: Oil-flooded, single-stage screw compressors with discharge air flows from 30 to 48 m3/min.
Engine Options: Caterpillar and Cummins engines with horsepower ranging from 403 kW to 652 kW.
Mast and Operator's Cab: Mast made from ASTM 500 grade B tubing; cab is shock-mounted, FOPS certified, with climate control and sound levels below 80 dB(A).
Operator's Controls: Standard engine and compressor controls, drilling controls, and optional filter indicators.
Undercarriage: Excavator type with triple grouser pads, maximum tram speed of 3.14 km/h.
Mainframe and Leveling Jacks: Made from ASTM 500 grade B tubing, with four leveling jacks each lifting 290 kN.
Hydraulic System: Various pumps and motors with pressure ratings up to 414 bar.
Accessories: Includes a 4-pod carousel for 8 m and 10 m masts, and a 2-pod carousel for 11 m masts.

Procedures
The document describes the use of a deck wrench on the drill deck, featuring a hydraulic cylinder for positioning and a stationary jaw for impact. The HOBO Break-Out Wrench is located outside the mast under the pipe rack, supported by a pivot and powered by hydraulic cylinders.

Standards and Recommendations
Performance ratings are based on 100% efficiency and engineering specifications in line with industry standards. Capacities may vary with drilling conditions, and specifications are subject to change without notice.

Accessories and Tools
Accessories include the HOBO Break-Out Wrench and a pipe rack outside the mast. The pipe rack is a carousel type with stationary breaker plates, accommodating drill pipes of 114 mm to 178 mm in diameter. The winch mounted on the mast has a rating of 3,629 kg and uses a 13 mm cable with a swivel-type positive lock safety hook.

Shipping Weights and Dimensions
The document provides approximate dimensions and weights for shipping the MD6290 Rotary Blasthole Drill and its components. The main drill unit measures 10.82 m in length, 4.06 m in width, and 3.96 m in height, with a weight of 41,050 kg. The mast assembly for a 35 ft pipe is 14.81 m long, 1.91 m wide, and 1.91 m high, weighing 14,514.96 kg.

Additional Information
For more information on Cat products, dealer services, and industry solutions, the document directs readers to visit mining.cat.com and www.cat.com. All rights reserved by Caterpillar Inc., with trademarks and corporate identity protected.

Catalog excerpts

Rotary Blasthole Drills Rated Capacity Bit/hole diameter Depth single-pass (8 m mast) Depth multi-pass Depth single-pass (10 m mast) Depth multi-pass Depth single-pass (11m mast) Depth multi-pass Operating Temperature Min. ambient rating (standard) -28°C (-20°F) Cold weather option Max. ambient rating (standard) 52°C (125°F) Pull-down/Hoisting Capacity Rated pull-down capacity Up to 267 kN (60,000 lbf) Rated hoist capacity Feed rate Retract rate Open-loop, hydraulic (stationary barrel, moving rod) Pull-down cylinder stroke Head travel (8 m mast) Pull-down cylinder stroke Head travel (10 m mast) Pull-down cylinder stroke Head travel (11m mast) Cylinder bore Cable type Cable sheaves (cylinder) 406 mm OD (16 in) Cable sheaves (top & bottom) 559 mm OD (22 in) Sheave guards Standard at bottom plate Adjustable head guide shoes Steel with replaceable NylatronT

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Rotary Drive System Rotation speed Horsepower capacity Main thrust bearing Drive motor Casting design Taper roller Straight spur Cooler Assembly Radiator-CAC-Oil Cooler Assembly for Cat8 C15 (Tier III) 403 kN (540 hp), single, front-end mounted Air-finned, three-core, radiator/aftercooling/hydraulic side-by-side compressor, CAC-stacked Cooler height Cooler width Engine radiator Coolant connections Sealed top tank, pressure cap, overflow tube and sight glass Compressor oil core hose connection Hose connections Air-to-air cooler Standard ambient rating

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Cooler Assembly (continued) Radiator-CAC-Oil Cooler Assembly for Cat8 C27 (Tier II) 597 kW (800 hp), single, front-end mounted Air-finned, four-core, radiator/hydraulic side-by-side compressor, CAC-stacked Cooler width 2896 mm ( 114 in) dual fan Cooler height Engine radiator Top tank Sealed deaeriation tank, pressure cap, overflow tube Standard ambient rating 52° C (125° F) Radiator-CAC-Oil Cooler Assembly for Cummins QXR-15 front-end mounted Air-finned, three-core, radiator/aftercooling/hydraulic side-by- side compressor, CAC-stacked Cooler height Cooler width Engine radiator Coolant connections...

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Compressor (continued) Compressor (Optional) Type (high-pressure) Oil-flooded, two-stage screw Discharge air flow (sea level) Type Dry-type with safety element/SRG 20 Engine (Standard) Rated horsepower Full load Starting system Safety shut-down system Energized to run Dry-type with safety element Muffler guard Jacket water cooling/CAC Fuel tank Turbo & manifold covers Blankets and/or exhaust wrap Engine (Optional)_ Rated horsepower Full load Starting system Safety shut-down system Energized to run Dry-type with safety element Muffler guard Jacket water cooling/CAC Radiator Fuel tank Turbo & manifold...

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Engine (continued) Engine (Optional) Rated horsepower Full load Starting system Safety shut-down system Energized to run Dry-type with safety element Muffler guard Jacket water cooling/CAC Radiator Fuel tank Turbo & manifold covers Blankets and/or exhaust wrap ASTM 500 grade B rectangular tubing, welded Main chord size Front 203 mm (8 in) x 102 mm (4 in) Pivot and raising area Rectangular tubing A frame; reinforced in high-stress areas Hydraulic lines Pressure-rated steel hydraulic tubing Hose rack Sheet steel trough for moving hoses Table hole diameter deck hole for guide bushing Mast-Elevating...

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Operator's Controls (continued) Standard drilling controls Leveling jack controls (hydraulic) Mast elevation control (hydraulic) Main rails HOBO/Break-out wrench control (electric) Pull-down control (electric over hydraulic) Pull-down pressure control (pilot hydraulic) Rotation control (electric over hydraulic) Propel controls (electric over hydraulic) Carousel in/out control (electric) Carousel indexing control (electric) Carousel indexing (electric) Mast lock (electric) Dust/water injection (electric) Dust curtain (electric) Deck wrench control (electric) Level indicator (bubble) Rectangular...

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Hydraulic System Left Track/Rotation Pump (Closed-loop)_ Axial piston, variable volume Right Track Pump (Closed-loop)_ Axial piston, variable volume Accessory Circuit/Feed Pump (Open-loop)_ Axial piston, variable volume Pressure rating Pressure rating Track Drive Motors Bent axis fixed volume Pressure rating Rotation Drive Motor Axial piston variable volume Pressure rating Pressure rating Pump Drive Gearbox Rubber coupler/drive shaft to Filtration (All Alters have indicators and bypass)_ Loop 12 micron, 2 per loop (optional) Main return Case return Oil-Cooling System (Hydraulic Tank) temperature...

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Accessories, Tools and Handling Equipment (continued) HOBO Break-Out Wrench Wrench type Outside mast, under pipe rack Patented HOBO (Hydraulically Operated Break-Out) Hydraulic Cylinders Accessories, Tools and Handling Equipment (continued) Pipe Rack (outside the mast)_ Carousel, with stationary breaker plates Size of drill pipe/capacity Size of drill pipe/capacity Length of drill pipe Pipe rack swing Hydraulic cylinders (2) Pipe rack index Hydraulic motor through chain drive Location Outside mast Cable size Safety hook Swivel-type positive lock Basic Shipping Weights and Dimensions Quantity...

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Cat® MD6290 Rotary Blasthole Drills

Cat® MD6290 Rotary Blasthole Drills

Catalog excerpts

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