Cylinder Head Valve Seat & Guide Machines
A complete range of Cylinder Head Valve Seat & Guide Machines, from economical to extra large heavy duty capable, capable of extreme accurate concentricity.
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SG9MTS
MANUALMATIC ACTIVE SPINDLE Cylinder Head Valve Seat and Guide Machine Utilizing UNIPILOT Carbide Centering Pilots
Machine Operations
- Seat & Guide Machining
The SG9MTS MANUALMATIC Touch Screen Control Seat & Guide Machine uses the proven, patented UNIPILOT tooling system. The machine has 2 modes of operation:
Manualmatic — Increases operator productivity by 30%-50% and reduces error. During seat cutting, the operator does not use any buttons or switches, but instead simply turns the spindle feed steering wheel up or down. The control takes care of all functions including workhead float/clamp, pilot centering in the valve guide, and spindle on/off. When seat depth is reached, the control automatically changes spindle RPM to high/finish speed to deliver consistent, exacting surface finishes every time.
Manual — Using Rottler’s intuitive SG9 software, a touch screen is used to control and display the spindle’s vertical position, eliminating the need for external dial gauges. Feeding the spindle to the valve seat sets the cutting insert to zero, and a quick touch sets the zero position with the screen showing exact spindle position at all times. Low to High finishing speed transitions are are also controlled via buttons on the touch screen. Workhead clamp and float pedals are also eliminated, simplifying machine operations and saving valuable operator time.
SG9MTS Features
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.
Storage Cabinet — Three Drawers and Top Tray allows convenient storage of wide selection of tooling available from Rottler.
Built in Vacuum Tester — For quick checking of valve seats before removing the cylinder head.
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 extremeFast & Accurate
Heavy duty SG9MTS workheads are robust with the capability to machine large diameter valve seats. The lightweight design is engineered for speed and accurate centering creating theultimate concentricity.
Precision Seat Cutting Inserts
Rottler’s Precision CNC Ground Fine Grain Carbide Seat Cutting Inserts are substantially faster and less expensive than grinding. Inserts eliminate the need to purchase a different grinding stone for every angle. Rottler manufactures inserts in single and multi-angle. Curved and radius shapes are available.
Storage Cabinet
Three Drawers and Top Tray allow for convenient storage of a wide selection of tooling available from Rottler.
Built in Vacuum Tester
Quality check valve seats while the cylinder head is still set up on the machine!
Optional 360° Rollover Fixture
360° roll provides quick and easy access to all sides of the head. Precision adjustments are accomplished fast using the Micro Adjust Feature. A cushion of air floats the fixture for fast easy set ups.
Rigid Cast Iron Construction
Rottler SG9MTS machines are manufactured from heavy thick wall cast iron. The all cast iron rigid platform is precision machined providing superior accuracy as compared to welded steel. Rigidity is vital in producing high quality chatter free valve seat cutting.
Heavy Duty Base Cabinet
Extending the heavy duty base cabinet to the rear assists in safe handling during machine relocation. Foot clearance is provided for operator comfort.
Variable Speed Spindle from 25 to 1000 RPM
Spindle Speed can be accurately selected for varying machining operations. Soft Touch Buttons and a bright digital display are located for ease of operation.
Touch Screen Control Panel
The intuitive Rottler Touch Screen Control Panel is ergonomically placed at eye level for simple operation.
Spindle Alignment
Vertical spindle alignment is controlled via the Pneumatic System switch to allow UNIPILOT Tooling to easily enter the valve guide.
Dual Speed Spindle Feed
Rapid feed is accomplished through the large handwheel. Use the small handwheel to perform precise fine feed spindle control when depth of cut is required to attain extreme levels of accuracy.
Adjustable Spindle Tilt & Depth Stop
Spindle tilts up to 15° from vertical, in both directions, providing quick alignment on all canted valve cylinder heads. Each seat is cut to identical depths for optimal performance of computer controlled engines.
Automatic Spindle Lock Nut
Patented Spindle Locking Nut System automatically tightens tools in the spindle with a wrench free design. Secure tool installation and removal is nearly instantaneous.
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 entire length of the bearing area. Superior High Precision Rottler design is built in for durable operation.
Electronic Level
Digital readout provides clear feedback on the screen allowing for quick and accurate adjustments.
Digital Depth Indicator
Digital Depth indication shows operators the exact amount of material that has been removed from the seat resulting in consistent seat depths. Operations such as installing seat rings, reducing valve guides, facing spring seats and more are benefited by digital accuracy. One Touch Zero saves operator time while ensuring accuracy.
Air Float
The easy to use Rottler Touch Screen is designed to mirror manual operation. Air Float allows simple In/Out Adjustment of the 360° rotation fixture. Workhead clamping and Air Float are quickly controlled via the Touch Screen Control.
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 operation.
Light Weight Workhead — The SG9 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.
Spindle Alignment — Pneumatic system controlled by switch aligns spindle vertically to allow UNIPILOT to easily enter valve guide.
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.
Adjustable Depth Stop
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.
Automatic Spindle Lock 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 giving decades of use.
Additional Materials
SG90MTS
ACTIV SPINDLE Large Capacity Valve Cylinder Head Machining Center
Machine Operations
- Seat & Guide Machining
The all new SG90MTS has a MANUALMATIC Touch Screen control similar to previous MANUALMATIC models but now features the proven ACTIV spindle system mounted on triple air float centering system to improve CONCEN accuracy and allow the use of small diameter pilots for small diameter valve seats. Spindle down feed is operated by the steering hand wheel.
SG90MTS Features
Light Weight Workhead floats on Base Plate — The new design SG series utilizes a very light workhead that floats independently on a base plate allowing precise centering of the pilot in the valve guide.
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 Insert Sharpener — Machine Mounted diamond wheel tool sharpener for fast, easy sharpening of multi angle cutting inserts.
Electronic Level and Angle Sensor — Digital Readout on the Touch Screen allows different Cylinder Heads to be leveled quickly and accurately.
Additional Materials
SG90A
Heavy Duty Cylinder Head Valve Seat and Guide Machine
Machine Operations
- Seat & Guide Machining
The SG90A was created specifically for machine shops that rebuild small to large cylinder heads found in the heavy duty engine industry.
Large cylinder heads come in many shapes and sizes, from 24 valve single casting cylinder heads to huge single cylinder heads used in natural gas, mining and marine workboat engines. We put our trusted engine block machining technology to work designing a heavy duty machine that handles many operations required on a wide variety of cylinder heads.
At Rottler we believed that many large cylinder heads could be “plunge cut” with fixed tooling to save time and money. We realized that plunge cutting would require a very rigid machine utilizing many of our already established design features such as Rottler’s exclusive spindle design. Over the decades, Rottler’s spindle design has proven that our engine block machines are able to “plunge cut” wide counterbores found in large engine blocks with exceptional results. We used this spindle design for the SG90A and it has since been proven, in over 50 machines, that the SG90A is capable of plunge cutting large valve seats very quickly and with excellent CONCEN and surface finish.
SG90A Features
Proven Rottler Spindle Design — The large diameter precision spindle nut has an R40 taper with the Quick Change Self Locking Spindle Nut System. Tooling never comes loose and no wrenches are required to change tools. Rottlers unique Heavy Duty tooling allows large and wide Valve Seats to be machined to accurate Concentricity. Solid Carbide Pilots offer maximum rigidity and long life for years of precision machine work.
Touch Screen Control Technology — The SG90A features a Conversational Touch Screen Control that allows the operator to program the machine to cut at certain RPM with a specific feed rate. This eliminates chatter when cutting hard valve seats by eliminating the human error of the operator truing to feel the cutting action. See controls for more information.
UNIPILOT Tooling — The UNIPILOT tooling system allows the carbide centralizing UNIPILOT to work like a live pilot. It stays in the spindle while moving from valve guide to valve guide, but all at the same time has a fixed pilot design to give improved concen. See brochure for more information.
360 Degree Roll Over Fixture — Rottler’s 360 Degree Roll Over Fixture comes standard on the SG90A. The fixture allows large 24 valve cylinder heads to be clamped with reference to their head gasket fire deck and rolled 360 degrees in one set up. The heavy duty clamping and fine adjust system allow quick leveling and rigid clamping for heavy cutting during machining. (Optional)
Adjustable Air Float and Air Clamp Work Table — The large worktable of the SG90A consists of two 68″ (1730mm) long parallels that are mounted on an air floating and air clamping base. These extra long T-slot parallels allow a wide variety of fixtures and jobs to be set up for machining. The complete table and fixture assembly is easily adjusted in/out with air float and locked rigidly with air clamping allowing cylinder heads with four valves per cylinder to be adjusted in/out and machined without resetting of the cylinder head in the fixture. Just press the foot pedal to float the table, slide in or out and the table locks in position ready for machining.
Additional Materials
SG10XY
ACTIV SPINDLE Programmable Automatic Valve Guide-to-Guide Cylinder Head Machining Center
Machine Operations
- Seat & Guide Machining
The Rottler SG10XY ACTIV spindle is mounted on a sphere which allows the UNIPILOT to automatically center with the valve guide centerline while the Workhead is floating on air cushions. Once air floating stops and the Workhead clamps, the UNIPILOT and valve guide centerline are maintained while cutting the valve seat.
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- ACTIV SPINDLE – Spherical Pneumatic Automatic Alignment System built into the Spindle for fast location of the pilot into the Valve Guide and Accurate Centering (Patent Pending)
- Air Float Work Head on Intermediate Base Plate
- Heavy Duty Spindle – Diameter 3.150” (80mm) Hardened and Ground with 8” (200mm) of vertical travel.
- Rottler Automatic Tightening and Quick Release Spindle Lock Nut System for One Hand Operation for fitting and removing tooling to and from the spindle – never comes loose!
Delivers the best concentricity. Rottler’s Rigid Precision carbide centering UNIPILOTS are manufactured to less than one tenth (.002mm) tolerance. Combined with the light weight air float Workhead the SG10XYgives perfect centering in the valve guide and the best concentricity of any machine on the market.
SG10XY Features
ACTIV SPINDLE — The Centerline of all valve guides in one cylinder head are not always in perfect alignment. The SG10XY has the latest design ACTIV Spindle which has a sphere built inside the spindle which compensates for any misalignment and allows the UNIPILOT tooling system to automatically center with reference to the valve guide centerline while the workhead is floating on air cushions. Once the floating stops and the workhead clamps, the UNIPILOT and valve guide centerline are maintained while the valve seat is cut giving excellent CONCEN. When performing machining operations other than valve seat cutting such as valve seat housing counterboring and valve guide reaming, the spindle is required to be locked vertically. The ACTIV spindle has a pneumatic locking system that locks the spindle sphere rigidly vertically for other types of machining requirements.
Automatic Guide-to-Guide — The SG10XY is engeineered to have a very light workhead that floats independently on a base plate allowing precise centering of the pilot in the valve guide. The base plate moves the workhead from guide-to-guide by a precision ball screw and servo motor. The complete assembly clamps with air pressure for rigid machining.
Quick X Axis Alignment System (Patent Pending) — This feature is the secret to productive guide-to-guide automatic machining! After the cylinder head is clamped in the fixture, 2 pilots are installed in the outer valve guides and 2 the alignments arms are moved on linear slideways inline with the 2 pilots, at this stage, the complete fixture assembly floats on air and the 2 pilots contact the 2 alignment arms which aligns the valve guides with the X axis movement of the workhead. At this stage, the fixture clamps on the machine table, the 2 pilots are removed and the cylinder head is ready for automatic guide-to-guide machining.
Variable Speed Servo Spindle Drive — CNC Servo Spindle Motor Drive controls the final speed and number of revolutions then lifts automatically giving perfect surface finish results – every time!
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. All valve seats in a cylinder head are exactly the same and the SG10XY cuts every seat to the same depth.
Cutting Insert Sharpener — Machine Mounted diamond wheel tool sharpener for fast, easy sharpening of multi angle cutting inserts.
Electronic Level and Angle Sensor — Digital Readout on the Touch Screen allows different Cylinder Heads to be leveled quickly and accurately.
Additional Materials
SG100XY
ACTIV SPINDLE Programmable Automatic Large Capacity Valve Guide-to-Guide Cylinder Head Machining Center
Machine Operations
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- Seat & Guide Machining
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There are two common designs for diesel cylinder heads: large (huge) castings for 6 cylinder inline engines with 24 valves, and single-cylinder heads, each with 4 valves (such as found on the CAT 3500).
The single cylinder heads are the biggest challenge! Most seat and guide machines can only handle one single head at a time, requiring the operator to load, clamp, machine intake seats, change tooling, machine exhaust seats and then unload the completed head before loading the next head. A tremendous amount of time is wasted. Operator fatigue becomes a real concern as the operator has to spend so much time just loading and unloading, and not getting the critical machine work done of cutting valve seats and honing valve guides.
Rottler has developed fixtures that allow easy loading of four single heads, clamping all four at once with a single button.
The fixture is designed to accommodate different height heads as often heads being remanufactured have been worked on before and are not equal thickness and also may not be parallel. After the heads are clamped, the SG100XY is able to machine all the intake seats unattended and after a quick tool change, the software automatically changes the program to cut all the exhaust seats unattended.
For the large 24 valve castings, Rottler has developed a servo-controlled 360-degree rollover fixture with power clamping. Easy and fast to set up, these huge castings can be rotated 360 degrees and leveled for many operations such as valve guide and spring seat repairs, injector tube repairs and even drilling out broken studs on the exhaust manifold surface on the side of the heads.
SG100XY Features
ACTIV SPINDLE — The Centerline of all valve guides in one cylinder head are not always in perfect alignment. The SG100XY has the latest design ACTIV Spindle which has a sphere built inside the spindle which compensates for any misalignment and allows the UNIPILOT tooling system to automatically center with reference to the valve guide centerline while the workhead is floating on air cushions. Once the floating stops and the workhead clamps, the UNIPILOT and valve guide centerline are maintained while the valve seat is cut giving excellent CONCEN. When performing machining operations other than valve seat cutting such as valve seat housing counterboring and valve guide reaming, the spindle is required to be locked vertically. The ACTIV spindle has a pneumatic locking system that locks the spindle sphere rigidly vertically for other types of machining requirements.
Automatic Guide-to-Guide — The SG100XY is engeineered to have a very light workhead that floats independently on a base plate allowing precise centering of the pilot in the valve guide. The base plate moves the workhead from guide-to-guide by a precision ball screw and servo motor. The complete assembly clamps with air pressure for rigid machining.
Quick X Axis Alignment System (Patent Pending) — This feature is the secret to productive guide-to-guide automatic machining! After the cylinder head is clamped in the fixture, 2 pilots are installed in the outer valve guides and 2 the alignments arms are moved on linear slideways inline with the 2 pilots, at this stage, the complete fixture assembly floats on air and the 2 pilots contact the 2 alignment arms which aligns the valve guides with the X axis movement of the workhead. At this stage, the fixture clamps on the machine table, the 2 pilots are removed and the cylinder head is ready for automatic guide-to-guide machining.
SSV Spindle Speed Variation — Rottler has developed special spindle motor control technology to vary the spindle speed while finish cutting the valve seat. SSV varies the spindle speed to specified speeds and controls the time of acceleration and deceleration in micro seconds giving improved surface finish for perfect CONCEN and vacuum seal.
Windows Touch Screen Control — Windows based touch screen control is easy to use for automatic hole to hole operation without requiring complex CNC programming.
Light Weight Workhead floats on Base Plate — The new design SG series utilizes a very light workhead that floats independently on a base plate allowing precise centering of the pilot in the valve guide. The base plate moves the workhead from guide-to-guide by a precision ball screw and servo motor. The complete assembly clamps with air pressure for rigid machining.
Variable Speed Servo Spindle Drive — CNC Servo Spindle Motor Drive controls the final speed and number of revolutions then lifts automatically giving perfect surface finish results – every time!
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. All valve seats in a cylinder head are exactly the same and the SG100XY cuts every seat to the same depth.
Cutting Insert Sharpener — Machine Mounted diamond wheel tool sharpener for fast, easy sharpening of multi angle cutting inserts.
Electronic Level and Angle Sensor — Digital Readout on the Touch Screen allows different Cylinder Heads to be leveled quickly and accurately.
Additional Materials
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