EK250 Mid Mast

Applications

Mid Mast

Standard Mast

Short Mast

Bottom Drive CFA

Kelly Bar

The EK250MM

TECHNICAL SPECIFICATIONS

Standard Chassis:	CAT 340 Next Gen
Installed Power:	346 hp	258 kW
Maximum Torque:	234,500 ft.lbs	31,800 kg.m
Maximum Diameter	13 ft	4,000 mm
Standard Drilling Depth:	95 ft	28,956 mm
Crowd Force:	73,326 lbf	33,000 kgf
Crowd Cylinder Stroke:	19 ft 8 in	6,000 mm
Main Winch Line Pull	58,700 lbf	26,500 kgf
Minimum Transport Weight	107,000 lb	48,5300 kg
Operation Weight	180,000 lb	81,650 kg

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About the EK250MM

The EK250 is a cylinder crowd drilling rig mounted on a CAT340. It is CZM’s most popular machine for drilling on very hard rock. The size and weight of the rotary and kelly bar allow a high effective crowd force. It is deal to handle large diameter, deep holes on hard rock. It can be supplied as a Standard or Short Mast configuration.

Base:

The new Cat 340 Next Gen powered by a fuel efficient Tier 4 Final C9.1 ACERT engine.
Equipped with CAT Vision Link that allows management to monitor machine operations and maintenance data online.

Undercarriage:

Caterpillar variable undercarriage VH5000/4300/800. Reinforced frame H style variable undercarriage.

Mast:

Reinforced mast, with high resistance steel Weldox 700.

Main Winch:

Special groove for better cable winding and longer cable life.
Press-roller included.
2 gears allows for both high speed and high pulling force.
Automatic gear shifting, for seamless operation, high production.
Automatic down the hole winch stop.
Free willing winch during crowd operation.
Hydraulic and mechanic brake.
Hydraulic measurement of pulling force displayed in the cabin.

Rotary:

Robust design, with 2 slewing bearings on top and bottom, robust pinion and main gear.
2 groups of Hydraulic Motor / Planetary Gears for high torque and long life.
Anti-cavitation, anti-shock and cooling system for longer hydraulic motor life.
Power-shift for High spin-off speed (120rpm) for quick discharge of soil.
3 operation speeds and 3 spinoff speeds. For high torque and high speeds.
Automatic gear shifting, for seamless operation, high production.
Exchangeable keys, bolted. No need to rebuild keys by welding inside the rotary.
Hydraulic measurement of torque displayed in the cabin for the operator.