EK250SM

Applications

Short Mast

Standard Mast

Mid Mast

Kelly Bar

The EK250SM

TECHNICAL SPECIFICATIONS

Standard Chassis:	Cat® 340 Next Gen
Installed Power:	352 hp
Maximum Torque (Nominal):	234,000 ft.lbs
Maximum Diameter	13 ft
Standard Drilling Depth:	50 ft 10 in
Crowd Cylinder Push Force:	73,400 lbf
Cylinder Stroke:	8 ft 3 in
Main Winch Max Pull Force (Effective):	59,000 lbf
Operating Weight:	170,000 lb

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About the EK250SM

The EK250 is a cylinder crowd drilling rig mounted on a Cat® 340. 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.
Freewheeling winch during crowd operation.
Hydraulic and mechanical 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.