The Industry Leader in Portable Heavy Duty and Large Hole Structural Drilling

Hearn Machine
Hearn Machine

  • Hearn machine specifications

    HEARN SDT8 MODEL

    The SDT8 Model is the newest and most powerful Hearn Drill available.  The  SDT8 Model offer a number of upgrades from the earlier Hearn models.  One of the most imporatn design features of the SDT8 Model is that it can be retro-fit on almost all previous Hearn frames, so clients can upgrade without having to buy a completely new machine.

    SDT8 Model Key Features

    Retro-Fit to Existing Frames:   The New SDT8 Drill Head can be reto-fit to most older Hearn Drill frames

    Spindle Drive Motor:   The SDT8 has an upgraded 15hp motor compared to the 7.5hp on the SDT7

    Quill Travel:   The SDT8 comes standard with a spindle that can drill through 12" of steel

    Spindle Speeds: The standard machine comes with fully vaible RPM settings from 225-750 RPMs. Custom set up options are available to Big Hole drilling at lower RPMs or High Speed drilling options up to 1200 RPMs

    Spindle Feed Rate:   1" - 10" Inches Per Minute

    Power Input Supply:   460v/480v

    Spindle Options:    MT4 set up standard; CAT40 option available for high speed drilling and milling upgrades

    Frame Sizes:    Width 3', 4', 5' & 6'; Length 4', 5', 6', 8', 10' & 12'
    Machine Positioning:    Vertical, Horizontal, Upside Down


    Options available with the SDT8 System

    Operator Pendants:   Heavy Duty Direct Wired or Wireless

    Coolant:   Pressurized Through the Bit Mist Coolant System

    Hole Alignment:   Laser Crosshair Hole Alignment Packages




    HEARN SDT7 MODEL

    The SDT7 Model is the original Hearn Portable drill design.  The SDT7 Model is an efficient machine that allows operators to  quickly and efficiently drill steel.  The machine easily mounts onto a girder for use in yard or off-site drilling.

    SDT7 Model Key Features

    Spindle Drive Motor:   The SDT7 has a 7.5hp drive motor

    Quill Travel:   The SDT7 comes standard with a spindle that can drill through 5" of steel and an extended version that can drill through 9" of steel

    Spindle Speeds: The SDT7 has fixed RPM settings - 75, 150, 225, 300, 455, 600, 912 & 1200 RPMs

    Spindle Feed Rate:   1" - 10" Inches Per Minute

    Power Input Supply:   220v/240v and 460v/480v are available

    Spindle Options:    MT4 set up standard

    Frame Sizes:    Width 3', 4', 5' & 6'; Length 4', 5', 6', 8', 10' & 12'
    Machine Positioning:    Vertical & Horizontal


    Options available with the SDT7 System

    Operator Pendants:   Heavy Duty Direct Wired or Wireless

    Coolant:   Pressurized Through the Bit Mist Coolant System

    Hole Alignment:   Laser Crosshair Hole Alignment Packages