Rottler EM79ATC

Multi Purpose Vertical CNC Machining Center with Automatic Tool Changer

Machine Operations

Automatic Tool Changer
Block Surfacing
Blue Print Boring
Boring & Sleeving
Circular Interpolation
Connecting Rod Boring
Cylinder Boring
Cylinder Head Resurfacing
Lifter Boring
Line Boring
Multi Purpose CNC (Custom Parts)
Thrust Cutting


The Rottler EM70 Series are designed for the small - medium size diesel engine rebuilder as well as the performance engine builder. The EM79ATC features an Automatic Tool Changer.

Rottler’s totally new, next generation CNC control found in the EM Series machines continues to give users unmatched speed of learning and ease of use when probing/digitizing without the need of additional cumbersome and expensive software. This advanced 4C software lets users know they are machining with the most state-of-the-science equipment available. Read more in the "Control" tab below.


  • Windows Touch Screen Operating System – Rottler uses Windows Touch Screen Technology on a 19" touch panel. The Windows software has many advantages such as it's common user interface that is easy to learn and fast to operate.
  • Instant Internet Support - Rottler offers cutting edge internet support direct from your machine to the factory. Skype is installed for internet support. This feature gives you instant, direct contact with Rottler right on the machine without even making a phone call.
  • Automatic Tool Changer - Automatic Tool Changing System available for production machining applications.
  • Traveling Column Design - Allows stationary work piece for increased accuracy.
  • Extra Height Capacity - Easily handle medium size diesel blocks forincreased versatility.
  • Large Turcite Coated Box Ways - Turcite coated bedways for reduced friction, longer life and better accuracy.
  • Extra Long T-slot - Work Table for dual workstations and increased versatility
  • World Standard CAT40 Spindle - For fast tool changing and worldwide versatility. Sliding Quill Spindle Design -  For deep hole machining required for block work.
  • Servo Motors - Offer maximum torque and performance throughout the RPM range for precise accuracy and increase productivity.
  • Single Phase 208-240V - For power efficiency that saves electrical running costs.
  • Automated Workhead Tilting System - Provides superior surface finish.
  • Extra Long T-slot Work Table - for Dual Workstations and Large Blocks for increased versatility.
  • Direct Drive Precision Ball Screws - Give long trouble free life and accurate movement.

    For more information: See brochure or contact us at +1 (253) 872-7050

  • Standard Equipment

  • CNC (Computer Numerical Control) Machine using Windows Operating System and Industrial PC with Intel Processor. Precision Programming and Control  thru a 19" (483mm) Computerized Touch Screen.
  • Software options available for Programmable & Automated Cycles such as Boring, Surfacing, Lower Sleeve Offset Boring, Water Hole Repairs, Main & Cam Line Boring, General CNC Machine Work
  • USB flash drive for file transfer to and from computer
  • Internet connection to the machine computer must be provided for training support and service.
  • Machine/Computer can operate in either inch or metric system
  • 3 Axis movement by Direct Drive Precision Ball Screws
  • All motors - AC Servo Motors - Infinitely Variable    
  • Horizontal Movement (X Axis) - Left and Right Direction – 72” (1830mm)
  • Horizontal Movement (Y Axis) - In and Out Direction – 12” (305mm)
  • Vertical Movement (Z Axis) - Up and Down – 18” (457mm)
  • Vertical, Horizontal and Spindle Load Monitoring for Fast Overload Shut Down
  • Precision Position Display in .0001" (.002mm) Resolution.
  • Electronic Handwheel for manual movement - per click: Coarse Mode .01" (.25mm) Medium Mode .001" (.01mm) Fine Mode .0001" (.002mm)
  • Infinitely Variable Feedrates adjustable by handwheel during automatic cycles
  • High Performance Spindle Rotation AC Brushless Servo Motor and Drive System
  • Hard Chromed Precision Spindle with High Speed Angular Contact Bearings
  • CAT40 Spindle Taper with Pneumatic Quick Change Tool System
  • Fast Rapid and Jog Speeds for Reduced Cycle Time
  • Automatic Workhead Tilt System for Back Clearance during Surfacing
  • One Piece Heat Treated Mehanite Cast Iron Machine Castings
  • Air Pressurized Column for Less Friction and Accurate Positioning
  • Turcite Coated Slideways for Low Friction and Extended  Life
  • Automatic Central Lubrication System monitored by computer
  • LED Work Light (mounted)
  • Chip Guard with Adjustable Pivot Arm
  • Operation, Programming and Spare Parts Manual - Digital

  • Control

    Rottler Exclusive Touch Screen Programming
    The conveniently located control pendent centralizes the machine controls. Only the buttons and interactive menus required for a particular machine operation are displayed. Machine operations can easily be done manually or automatically, with the ability to store programs in memory. Digital readout allows the operator to accurately monitor position at all times. Control operates in metric and inch systems.

    Fully Programmable Cycles
    Conversational 3 axis CNC control, PC based with Windows Operating System.

    Dimensions and Control through Touch Screen:

    • Program Bore Centers, Exact Depth, Speed, Feed, etc.
    • Machines complete bank or main line in Automatic Cycle.
    • Lower Offset Boring allows lower sleeve repair in Automatic Cycle.
    • Circular Interpolate Counterbores for Radius Undercut or Wide Counterbores.
    • Surfacing/Milling – Multiple Pass – program for Rough Cut and Finish Cut for superior surface finish.
    • Line Boring – program the bearing bores and length of each bore and the machine automatically moves from bore to bore, completing the line unattended.
    • Face Main Line Thrust Faces square to centerline of Crankshaft using Rottler Circular Interpolation software.


    EM79ATC Machine Specifications American Metric
    Touch Screen15"381mm
    Machine Height118"2989mm
    Table - Size91.6" x 22.6"2325 x 575mm
    Table - T Slots5
    Travel - Horizontal (X Axis)72"1829mm
    Travel - In/Out (Y Axis)14"355mm
    Travel - Vertical (Z Axis)18"457mm
    Travel - Spindle Nose to Table40.44"1027mm
    Travel - Spindle Center to Column21.7"551mm
    Spindle - TaperCAT 40CAT 45
    Spindle - Diameter3.8"96.5mm
    Spindle - Rotation Speed0 to 2000 RPM
    Spindle - Motor6 HP4.5 Kw
    Tool ChangerOptional
    Cylinder Bore Range (with Optional Cutterheads).75" - 7"19 - 178mm
    Line Bore Range (with Optional Cutterheads)1.9" - 5.9"48.5 - 150mm
    Surfacing Cutterhead Diameters10", 14", X" & X"250, 360, X & Xmm
    Dimensions - Machine69D x 153W x 118" H 1745D x 3877W x 2989mm H
    Dimensions - Floor Space Requirements94D x 153W"2388D x 3877Wmm
    Dimensions - Shipping88D x 117W x 90" H 2235D x 2972W x 2286mm H
    Machine Weight10000 lbs4845 kg
    Electrical Requirements208-240V, 50A, 50/60Hz, 3Ph
    Air Requirements1 cfm @ 90 psi28 l/min @ 6 bar
    Paint Color CodeRAL9002 (Grey White)