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250XPC

Product catalog summary

General Specifications:
The 250XPC Rotary Blasthole Drill is designed for drilling holes with diameters ranging from 200 mm to 311 mm (7 7⁄8 in. to 12 1⁄4 in.). It features a single pass mast with a standard hole depth of 19.8 m (65 ft.) and a maximum depth of 59.4 m (195 ft.). The multi-pass mast offers a standard depth of 73.1 m (240 ft.) and an optional depth of 85.3 m (280 ft.). The maximum bit loading is 40,823 kg (90,000 lbs.).

Mast and Hoist/Pulldown:
The mast is constructed from lattice-type alloy steel. It can be raised and lowered using two hydraulic cylinders. Angle drilling is possible up to 30º in 5º increments with the multipass mast. The hoist/pulldown system uses a dual hydrostatic/direct drive chainless rack and pinion design, with a drill feed rate of up to 13.72 m/min (45 ft/min) and a hoist rate of up to 27.43 m/min (90 ft/min).

Pipe Handling:
The drill features a parallelogram style pipe rack and a 5-pipe rotary carousel for a total depth of 73.1 m (240 ft.). An additional pipe rack and a 6-pipe carousel are optional for a total depth of 85.3 m (280 ft.).

Rotary Machinery:
The rotary machinery is designed with dual hydrostatic/helical gear, offering a rotation speed of 0-130 RPM and a maximum torque of up to 15,356 Nm (11,326 ft-lbs.) at 75 RPM.

Electrical Control Systems:
The system includes a standard touch screen GUI with operator error protection systems such as over-temperature shutdowns and over-tilt protection.

Propel System:
The drill uses a heavy-duty B-9 excavator type crawler with a dual hydrostatic planetary drive. It has a maximum propel speed of 3.06 kph (1.90 mph) and can handle a maximum grade of 41%.

Hydraulic System:
The main system is a closed loop design with dual variable-displacement piston pumps, while the auxiliary system is open loop with an axial piston pump. The system uses high-pressure steel tubing and features 3-micron return filters.

Power Unit:
The drill is powered by a Cummins QST 30 diesel engine with a power rating of 783 kW (1,050 hp) at 1800 rpm, with an optional MTU/Detroit Series 4000 engine for high altitude applications. Fuel consumption is approximately 113.5 L/hr (30 gal/hr).

Air System:
The air system includes a Gardner-Denver SSY Series oil-flooded screw type compressor with standard and optional volumes of 85 m3/min (3,000 cfm) and 97 m3/min (3,450 cfm) respectively.

Overall Dimensions and Weights:
The drill has an overall width of 7.83 m (25 ft. 8 in.) and a height of 27.77 m (91 ft. 2 in.) with the mast up. The operating weight is approximately 142,882 kg (315,000 lbs.).

Operator's Cab:
The cab is rear-mounted with vibration and noise suppression, featuring a FOPS Level II rating and noise levels below 80 dB while drilling. It includes a Bergstrom HVAC unit for climate control.

Optional Equipment:
Options include bit lubrication, cold weather package, fire suppression, high altitude package, remote propel control, and the Wiggins ‘Fastfil’ system.

Catalog excerpts

250XPCRotary Blasthole Drill General Specifications 200 mm to 311 mm Single pass mast Standard hole depth: 19.8 m 65 ft. Maximum hole depth: 59.4 m 195 ft. Multi-pass mast Standard hole depth: 731 m 240 ft Optional hole depth: 85.3 m 280 ft.

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2 P&H 250XPC rotary blasthole drill general specifications Komatsu Mining Corp. Group 3 Hoist/pulldown Construction Lattice type using alloy steel structural shapes Single pass mast 19.8 m 65 ft. Dual hydrostatic / direct drive chainless rack and pinion Two hydraulic cylinders Standard diameter: Drill feed rate to 13.72 m/min 45 ft/min Angle drilling Up to 30° in 5° increments (only available with multipass mast) Hoist rate to 27.43 m/min 90 ft/min Pipe handling Rotary machinery Type Single pass: Parallelogram style pipe rack, one rack is standard Multi-pass 5 pipe rotary carousel for 73.1 m...

Open the catalog to page 2

4 P&H 250XPC rotary blasthole drill general specifications Optional equipment Cylinders Four (4) 203 mm (8 in.) diameter x 1,676 mm (66 in.) stroke Jack pads Ground Pressure Auto level Standard feature Standard: LED floodlights for work and area lighting • Bit lubrication • Cold weather package • Fire suppression • High altitude package • Remote propel control • Wiggins 'Fastfil'* system Drill consumables Operator's cab Type Rear mounted with vibration and noise suppression FOPS rating Level II Noise < 80 dB while drilling Controls PLC controlled, backlit for night operation Glazing Shatter-resistant,...

Open the catalog to page 3