Here is a complete system for drilling long holes and boring raises as large as 6 ft. in diameter (1.8 m) with the 400 LP or 7 ft. (2.1 m) with the 400 SP and up to 1,500 ft. (457 m) in length. System includes an electric / hydraulic power pack with integral controls with a remote control station plus tools to make or break threaded pipe connections.

Infinitely variable speed and constant torque of the hydraulic drive enable you to adjust rotary speed to exactly match your drilling conditions. Two models are available - the 400 SP using 8 in. or 10 in. x 5 ft. pipe or the 400 LP using 8 in. x 4 ft. pipe. You can set up for vertical drilling in a station height of only 10.5 ft. (3.2 m). This is possible because the tandem hydraulic cylinder mechanism gives either Model 400 an extremely low profile.

Here is a complete system for drilling long holes and boring raises as large as 10 ft. in diameter (3 m) and up to 1,500 ft. (457 m) in length. System includes an electric / hydraulic power pack with integral controls with a remote control station plus tools to make or break threaded pipe connections.

Infinitely variable speed and constant torque of the hydraulic drive enable you to adjust rotary speed to exactly match your drilling conditions. Shifting is done hydraulically for smoothly changing from high-speed range for pilot hole drilling or into low-speed ranger for reaming. You can set up for vertical drilling in a station height of only 13 ft. (3.9 m). This is possible because the tandem hydraulic cylinder mechanism gives the SBM 700 an extremely low profile.

Because of the increased load capacities provided with the SBM 900, the hydraulic thrust cylinders are used as guide columns. These columns are in direct line with the drive spindle. Pilot or reaming thrust is reacted directly through the pivot point of the machine to assure stability at any drill angle and any thrust load.

This means reduced bending moment, greater stability and less deviation of the pilot hole collaring point when you are drilling and reaming inclined raises. This alignment also reduces wear and stress on structural members, drive spindle and drill pipe components.

The SBM 900 develops reaming torque of 189,000 ft. lbs. / 256, 284 knm. and reaming thrust to 940,000 lbs. / 4,174 kn. This machine comes standard with hydraulic drive, variable (0-9 RPM) rotary speed, so thrust and torque requirements can be obtained for cutting rock formations during pilot drilling as well as back reaming.