Rottler SG8MTS

MANUALMATIC Cylinder Head Valve Seat and Guide Machine Utilizing Fixed Carbide Centering Pilots

Machine Operations

  • Seat & Guide Machining

  • Applicable Industries

  • Cylinder Head Shop
  • Drag Racing
  • Engine Building
  • Jobber Shop
  • Marine Workboat
  • Performance Racing
  • Power Generation
  • Remanufacturing
  • Small Engines
  • Tractor Pulling

  • PDF Resources

    SG8MTS Brochure
    SG Pilot Catalog
    SG Optional Equipment Catalog
    SG Inserts & Profiles Catalog
    SG8MTS Optional Equipment Catalog

    Screen Control Seat & Guide Machine

    The SG8MTS uses the same proven fixed
    carbide pilot tooling as SG8M but now has a front mount steering
    wheel for spindle downfeed.

    The machine have 2 modes of operation:

    1. MANUALMATIC – a brand new concept has been added to these machines which should increase productivity by 30-50%. During seat cutting, the operator does not have to operate any buttons or switches, simply turn the spindle feed steering wheel up and down and the control takes care of all the functions like workhead float/clamp, pilot centering in the valve guide and spindle on/off. When depth of seat is reached, the control automatically changes spindle RPM to high/finish speed to give equal depth of every seat and consistent surface finish results.
    2. MANUAL – the buttons on touch screen are the same as the previous SGM machines. There is no external dial gage, the spindle vertical position is displayed on the touch screen. Simply feed the spindle down until the cutting insert touches the valve seat, touch set zero button and then the digital display will show exactly where the spindle is at all times. The change from low to high/finishing speed is easier as there are 2 separate buttons. The foot pedal for clamp and float of workhead has been eliminated and now controlled on touch screen for manual and automatically for MANUALMATIC.

    The SG8MTS features Rottler's trademark CONCEN that guarantees you get the
    most accurate and versatile machine possible. Rottler combines precision
    carbide centering pilots with a light weight air float workhead to give
    you perfect centering with the valve guide - every time. This
    guarantees the best CONCEN of valve seat to valve guide centerline in
    the industry. 

    For more information: See the SG8MTS Brochure or give us a call at +1
    (253) 872-7050
    • Concentricity -
      Rottler's Rigid Precision carbide centering
      pilots are manufactured to a fine tolerance.
      Combined with the light weight air float
      workhead the SG8MTS gives perfect centering in
      the valve guide and the best concentricity of
      any machine on the market.

    • Storage Cabinet -
      Three Drawers and Top Tray allows
      convenient storage of wide selection
      of tooling available from Rottler.

    • 360 Degree Rollover Fixture -
      Provides quick loading and easy access to
      all sides of the head. Quickly levels head
      using the micro adjust feature. Clamps onto
      table firmly for chatter free cutting
      with extremely accurate concentricity.

    • Multi Angle Seat Cutting -
      Rottler's Precision CNC Ground Fine Grain
      Carbide Seat Cutting Inserts are available
      in many different designs to suit customer
      requirements. Single angle, multi angle or
      curves and radius shapes are available.
      Cutting tools are substantially faster and less
      expensive than grinding, where a different
      grinding stone is required for each angle.

    • Rigid Machine Construction -
      Heavy thick wall cast iron machine castings
      and precision machining during the
      manufacturing process give excellent chatter
      free valve seat cutting. Heavy duty cabinet/
      base extended to the rear for safe handling
      when machine has to be moved. Recessed
      toe kick allows more comfortable machine

    • Light Weight Workhead -
      The SG8MTS has a light weight workhead
      for fast and accurate centering for the
      minimum concentricity. At the same time,
      the workhead is heavy duty capable of
      machining large diameter valve seats.

    • Variable Speed Spindle -
      from 40 to 400 rpm
      Accurately select specific spindle speeds required
      for different machining operations. Soft touch buttons
      and bright digital display allow ease of operation.

    • Electronic Level -
      Digital readout for quick, accurate adjustment.

    • Digital Depth Indicator -
      Shows the operator exactly how much has been
      removed from the seat assuring consistent
      seat depth. Also useful for installing seat rings,
      reducing valve guides, facing spring seats, etc.

    • Adjustable Depth Stop

    • Dual Speed Spindle Feed -
      Large handwheel provides rapid feed and small
      handwheel allows precise fine feed control of
      the spindle. Very helpful when depth of cut must
      be maintained to extreme levels of accuracy.

    • 15 Degree Tilt -
      Spindle tilts up to 15 degrees from vertical
      in both directions, providing quick alignment
      on all canted valve cylinder heads. Cuts
      each seat to the exact same depth - a must
      for today's computer controlled engines.

    • Spindle Nut -
      Patented Spindle Locking Nut system offers
      automatic tightening of tools in spindle. Won't
      come loose when cutting. One hand operation
      pushes tool up and spindle lock nut tightens
      automatically, ejects tool when loosened.

    • Large Diameter Spindle -
      3.150 inch (80mm) diameter heavy duty spindle
      assures rigidity for chatter free operation. Outer
      spindle support bearings are adjustable over the
      whole length of the bearing area, similar to High
      Precision Boring Bar design.

    • Rottler Patented Tooling -
      Rottler's patented SG tooling totally eliminates any
      bounce springs. The quick change spherical spindle
      adapter allows different tool holders to be changed in a
      few seconds. Change from multi angle seat cutting to
      pocket boring or reaming in just a few seconds! When
      the collar is moved down it aligns the tool holder
      vertically to allow the tool holder to be easily lowered
      down over the fixed pilot. While the tool holder is
      being lowered, the collar is lifted to release the sphere
      for precision centering and cutting. One hand pilot
      removal wrench allows fixed pilots to be
      moved from guide to guide - fast and easily.
    • Touch Screen Control for increased production and memory for settings
    • Air Float Work Head with Foot Pedal Control for Hands Free Air Clamping
    • Universal Heavy Duty Bolt Down 360 degree Roll Over Cylinder Head Fixture
    • Flexible, compact LED work light mounted on Work Heads
    • Rottler R1 Taper 3.150" (80mm) Hardened and Ground Spindle with 8" (200mm) of hand wheel travel
    • Rottler One Hand Automatic Tightening Spindle Lock Nut System
    • Quick Change Tool Retention System for fast location over pilot and accurate centering (Patent Pending)
    • Rapid and Fine Feed Mechanism for Precise Spindle Feed
    • Work head tilts 15 degrees in both directions
    • Spindle Rotation Speed Infinitely Variable from 40-400RPM with Digital Display
    • Quick change of RPM for Low and High by single push of button on the control panel
    • Tool Storage Cabinet with four drawers, mounts on the machine and swivels for ease of use
    • Digital Electronic Level for Quick, precise alignment of Fixed Carbide Pilots
    • Dial Gage for repeatable Depth Control of Spindle Travel
    • Holder Kit for heads that Roll Over Fixture is not able to clamp. 2-piece frame, adjustable for different length heads
    • Built in Vacuum Tester complete, Kit includes hose and pads
    • Cylinder Head Length Capacity in Standard 360 Degree Roll Over Fixture 44" (1120mm) and 52" (1270mm) with optional fixtures
    • Space requirement with Tool Cabinet mounted:  length 74", depth 34", height 80" (1880 x 864 x 2032mm)
    • Paint Color Code: RAL9002 (Grey White)
    • Electrical requirements: 208-240V, 15A, 50/60Hz, 1Ph                                                                   
    • Shipping weight 2700 lbs. (1224kg)
    • Shipping dimensions: 39 X 59 X 83" (991 x 1499 x 2108mm)                        
    • Prices (US Funds) FOB - EXW, Kent, Washington, USA
    With the Rottler SG8MTS you can accurately select specific spindle speeds
    required for different machining operations. The bright digital touch screen display allow ease of operations. With Rottler's Dual
    Speed Spindle Feed you can use the large handwheel to provide rapid feed
    and the small handwheel for precise find feed control of the spindle. The 360 Degree
    Rollover fixture provides quick loading and easy access to all sides of
    the head.

    For more information: See the SG8MTS Brochure or give us a call at +1
    (253) 872-7050
    SG8MTS Machine Specifications American Metric
    Machine Weight2700 lbs1227 kg
    Travel - Spindle Nose to Table19.500"495mm
    Spindle - TaperR30 Quick Change with Automatic Lock
    Spindle - Diameter3.15"80mm
    Spindle - Rotation Speed40 to 400 RPM
    Spindle - Motor2 HP1.5 Kw
    Valve Seat Diameter Range0.550"-3.150"14-80mm
    Cylinder Head Dimensions (with 360 degree rollover fixture)44L x 16W x 7H"1120L x 406W x 178Hmm
    Cylinder Head Dimensions (with Parallels)50L x 16W x 10.5H"1270L x 406W x 125Hmm
    Spindle Travel/Stroke Vertical7.875"200mm
    Workhead Travel Horizontal - Airfloat/Airclamp44.5"1130mm
    Workhead Travel In/Out - Airfloat/Airclamp1.4"36mm
    Workhead Tilt (either side of vertical zero)15 Degrees
    Roll Fixture Movement In/Out with Clamp4.75"121mm
    Dimensions - Machine32D x 53W x 74" H 813D x 1346W x 1880mm H
    Dimensions - Shipping39D x 59W x 83" H 991D x 1499W x 2108mm H
    Electrical Requirements208-240V, 15A, 60Hz, 1Ph
    Air Requirements cfm @ 90 psi l/min @ 6 bar
    Paint Color CodeRAL9002 (Grey White)