Cat® MD5090 Track Drills Specifications General Data Hole diameter Hole depth Compressor HPR4519 rock drill Rock Drill HPR4519 Output power Weight Percussion pressure Blow rate Rotation speed Rotation torque Drill steel Optional air/oil lubrication Optional rock drill HPR5123 Optional drill steel 127 mm (5.0 in) 23 m (74.5 ft) 8.5 m3/min (300 cfm) 19 kW (25 hp) 19 kW (25 hp) 300 kg (660 lb) Up to 250 bar (3,600 psi max) 2,500 – 2,700 bpm 240 rpm 908 Nm (670 ft-lb) 38 mm and 45 mm 23 kW (31 hp) 51 mm Feed System Feed extension .91 m (3 ft) Model UFH14 heavy-duty chain feed Pitch roller chain 31.7 mm (1.25 in) Resists torsional and thrust loading Drill mounting slide Replaceable wear pads Scissor-type centralizer Feed swing 36° left, 37° right Feed dump 139° Boom Specifications - Telescopic Boom up Boom down Boom length Boom extension Boom swing angle Rod Changers Manual Rack (standard) Qty. x length Linear (optional) Qty. x length 36° 29° 3.81 m (12.5 ft) 1.52 m (5 ft) 40° left 40° right 5 rods x 3.66 m (12 ft) 38, 45 or 51 mm steel 5 rods x 3.66 m (12 ft) or 5 rods x 4.27 m (14 ft) + one in feed 38, 45 or 51 mm steel

Shipping Dimensions Power Unit Tier III Cat® C9, electronically controlled, 6-cylinder inline turbocharged, air-to-air after-cooled 224 kW (300 hp) at 1,800 rpm in three-position throttle for fuel consumption Pumps are direct-driven by the engine through a steel flex coupling Dual-element air filter with indicators Fuel capacity Over 12 hours Rotary screw compressor Dual-element air filters with indicators Hydraulic System The hydraulic system is a load-sensed "dedicated" pump system Main pump for all functions except drill rotation and dust collector Pressure-compensated axial piston type Full-flow...

Track Drills—MD5090 MD5090 Dust-Collection System Model HDE900 12.7 cm (5 in) suction hose Feed-mounted precleaner and pickup pot 28 m2 (304 ft2) of filter area Reverse pulsing for cleaning Undercarriage Excavator track pad and chain Design side frames Final drive assemblies Triple grouser track pads 380 mm (15 in) wide Hydraulically released spring-applied brakes Independent track oscillation Ground pressure .65 bar (9.5 psi) Speed maximum 4 kph (2.4 mph) Machine oscillation ± 10° Gradability 35° Ground clearance 431 mm (17 in) Track gauge 2 042 mm (80.4 in) Guide Shell Maximum starter rod,...

Track Drills—MD5090 For more complete information on Cat products, dealer services, and industry solutions, visit us on the web at mining.cat.com and www.cat.com © 2011 Caterpillar Inc. All rights reserved CAT, CATERPILLAR, their respective logos, “Caterpillar Yellow” and the “Power Edge” trade dress, as well as corporate and product identity used herein, are trademarks of Caterpillar and may not be used without permission. AEHQ6532