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  • Offer Profile
  • Over the years, we developed grinding machines for various applications such as: polygonal profiles, crankshafts, camshafts, constant velocity joint, injection nozzle, rolling-mill rolls among other, applying conventional or CBN grinding wheels. All grinding machines series have hydrostatic support technology applied in the longitudinal and transverse slideways, it that allows obtain high productivity and quality, coupled with the best overall cost/effective. The continuous investment in engineering, enable customization of grinding machines to meet the needs of each client, ensuring high production with flexibility through quick set-up.

    The Grinding machine series of Zema also meets the demand of small-and medium-sized business, keeping the same level of technology and quality that already include of the industrial plants of the great companies of Brazil and around world.
Product Portfolio
  • CNC Cylindrical grinding machine: Numerika GL

      • Numerika GL - External Cylindrical

      • CNC External Cylindrical Grinder For Production – NUMERIKA GL – Grindstone Ø406 ~ Ø508mm

        The Numerika series is designed to meet the needs of grinding parts produced on small , medium and large batches. The productivity can be increased with use of accessories to the process, as for example: the roll dresser or diamond wheel dressing tools, automatic clamping systems of piece, gap-less, etc.

    • Features

        • Application

        • The Numerika Series is characterized by
          • A high level of automation, with integration in manufacturing cells;
          • Integration with conveyor or pallet, automatic loading and unloading systems;
          • “In-process” and “Post-process” monitoring size gauging;
          • High productivity;
          • Flexibility to comply with part families;
          • Quick set-up;
          • High MTBF;
          • Customized CNC, to operate for each cell and part families;
          • CNC-oriented preventive maintenance;
          • History registration of operating or programming key board;
          • Maintenance documentation based in FMECA and FMEA method;
          • Compliance to the client safety and standardization;
        • Characteristics of heads / Automation

        • Wheelhead
          • Spindle assembled with hydrostatic bearings.
          • Peripheral wheel speed = 45(60)m/s
          • The wheelhead can be used in straight or angular position with inclination from 0 to 30 degrees.
          • Automatic compensation of wheel dressing through CNC.

          Workhead
          • Can be operated with live or dead center.
          • Spindle assembled with high precision angular contact bearings.
          • CNC programmable revolutions from 20 to 1,000 rpm.
          • Maximum load between centers = 80 kg.
          • Internal taper = Morse #4.
          • Roundness precision = 0.0005 mm.
          Tailstock
          • Hydraulic quill openning, with axial adjustable spring pre-load.
          • Device to correct cylindricity within ± 0,15 mm.
          • Internal taper = Morse #4
          • Stroke of quill = 35 mm.
        • Applied Technology

          • Cross slides with pre-loaded hydrostatic guides on Xand Z axes.
          • Displacements obtained through high precision recirculating ball screws, servo commanded by brushless motors and with absolute encoder.
          • Linear and circular interpolation of axes in order to obtain any desirable profile.
          • High positioning precision.


          Hydrostatic System
          • This system uses oil under high pressure to separate the sliding surfaces to avoid any possible wearing of the guides.
          • Very low friction coefficient, eliminating the stick-slip, providing a smooth movement, free of vibrations.
          • Total elimination of backlash. High stiffness
          • No wearing of the guides as there is no metallic contact between the moving parts.

          Hydrostatic Bearings
          • Used on wheel head and workhead.
          • The bearings with shaft radial and longitudinal hydrostatic supports provide excellent vibration absorption ampening characteristics, perfect rotation with constant shaft centering.
          • Absolutely no wearing, since there is no metal contact between spindle and bushing, even in standstill.
          • Both spindle ends are provided with pneumatic retainers to avoid dirt penetration without heating.
      • CNC Cylindrical grinding machine: Numerika G

          • Numerika G - External Cylindrical

          • CNC External Cylindrical Grinder For Production – NUMERIKA G – Grindstone Ø 508 ~ 610mm

            The Numerika series is designed to meet the needs of grinding parts produced on small , medium and large batches. The productivity can be increased with use of accessories to the process, as for example: the roll dresser or diamond wheel dressing tools, automatic clamping systems of piece, gap-less, etc.

        • Features

            • Application

            • The Numerika Series is characterized by
              • A high level of automation, with integration in manufacturing cells;
              • Integration with conveyor or pallet, automatic loading and unloading systems;
              • “In-process” and “Post-process” monitoring size gauging;
              • High productivity;
              • Flexibility to comply with part families;
              • Quick set-up;
              • High MTBF;
              • Customized CNC, to operate for each cell and part families;
              • CNC-oriented preventive maintenance;
              • History registration of operating or programming key board;
              • Maintenance documentation based in FMECA and FMEA method;
              • Compliance to the client safety and standardization;
            • Characteristics of heads / Automation

            • Wheelhead
              • Spindle assembled with hydrostatic bearings.
              • Peripheral wheel speed = 45m/s
              • The wheelhead can be used in straight or angular position with inclination from 0 to 30 degrees.
              • Automatic compensation of wheel dressing through CNC.
              Workhead
              • Can be operated with live or dead center.
              • Spindle assembled with hydrostatic bearings.
              • CNC programmed revolutions from 20 to 600 rpm.
              • Maximum load between centers from 120 to 250 kg.
              • Internal taper = Morse #5.
              • Roundness precision = 0.0005 mm.
              Tailstock
              • Hydraulic quill openning, with axial adjustable spring pre-load.
              • Device to correct cylindricity within ± 0,15 mm.
              • Internal taper = Morse #4
              • Stroke of quill = 35 mm.
            • Applied Technology

              • Cross slides with pre-loaded hydrostatic guides on X and Z axes.
              • Displacements obtained through high precision recirculating ball screws, servo commanded by brushless motors and with absolute encoder.
              • Linear and circular interpolation of axes in order to obtain any desirable profile.
              • High positioning precision.


              Hydrostatic System
              • This system uses oil under high pressure to separate the sliding surfaces to avoid any possible wearing of the guides.
              • Very low friction coefficient, eliminating the stick-slip, providing a smooth movement,free of vibrations.
              • Total elimination of backlash. High stiffness
              • No wearing of the guides as there is no metallic contact between the moving parts.

              Hydrostatic Bearings
              • Used on wheel head and workhead.
              • The bearings with shaft radial and longituginal hydrostatic supports provide excellent vibration absorption dampening characteristics, perfect rotation with constant shaft centering.
              • Absolutely no wearing, since there is no metal contact between spindle and bearing, even in standstill.
              • Both spindle ends are provided with pneumatic retainers to avoid dirt penetration without heating.
          • CNC Cylindrical grinding machine: Numerika GH

              • Numerika GH - External Cylindrical

              • CNC External Cylindrical Grinder For Production – NUMERIKA GH – Grindstone Ø760 ~ Ø1067mm

                The Numerika series is designed to meet the needs of grinding parts produced on small , medium and large batches. The productivity can be increased with use of accessories to the process, as for example: the roll dresser or diamond wheel dressing tools, automatic clamping systems of piece, gap-less, etc.

            • Features

                • Application

                • The Numerika Series is characterized by
                  • A high level of automation, with integration in manufacturing cells;
                  • Integration with conveyor or pallet, automatic loading and unloading systems;
                  • “In-process” and “Post-process” monitoring size gauging;
                  • High productivity;
                  • Flexibility to comply with part families;
                  • Quick set-up;
                  • High MTBF;
                  • Customized CNC, to operate for each cell and part families;
                  • CNC-oriented preventive maintenance;
                  • History registration of operating or programming key board;
                  • Maintenance documentation based in FMECA and FMEA method;
                  • Compliance to the client safety and standardization;
                • Characteristics of heads / Automation

                • Wheelhead
                  • Spindle assembled with hydrostatic bearings.
                  • Peripheral wheel speed = 45 m/s
                  • The wheelhead can be used in straight or angular position with inclination 0º or 20º or 30º degrees.
                  • Automatic compensation of wheel dressing through CNC.
                  Workhead
                  • Can be operated with fixed or rotating live center.
                  • Spindle assembled with Hydrostatic bearings
                  • CNC programmed revolutions from 20 to 500 rpm
                  • Maximum load between centers from 150 to 350 kg.
                  • Internal taper = Morse #5.
                  • Roundness precision = 0.0005 mm.
                  Tailstock
                  • Hydraulic quill openning, with axial adjustable spring pre-load.
                  • Device to correct cylindricity within ± 0,15 mm.
                  • Internal taper = Morse #4
                  • Quill strok = 60 mm.
                  • Tailstock with diamond disk dressing tool incorporate (optional).
                • Applied Technology

                  • Cross slides with pre-loaded hydrostatic guides on Xand Z axes.
                  • Displacements obtained through high precision recirculating ball screws, servo commanded by brushless motors and with absolute encoder.
                  • Linear and circular interpolation of axes in order to obtain any desirable profile.
                  • High positioning precision.


                  Hydrostatic System
                  • This system uses oil under high pressure to separate the sliding surfaces to avoid any possible wearing of the guides.
                  • Very low friction coefficient, eliminating the stick-slip, providing a smooth movement,free of vibrations.
                  • Total elimination of backlash.
                  • High stiffness
                  • No wearing of the guides as there is no metallic contact between the moving parts.

                  Hydrostatic Bearings
                  • Used on wheel head and workhead.
                  • The bearings with shaft radial and longitudinal hydrostatic supports provide excellent vibration absorption ampening characteristics, perfect rotation with constant shaft centering.
                  • Absolutely no wearing, since there is no metal contact between spindle and bushing, even in standstill.
                  • Both spindle ends are provided with pneumatic retainers to avoid dirt penetration without heating.
              • CNC Cylindrical grinding machine: Futura

              • CNC External Cylindrical Grinder For Production

                The Futura grinding machine was developed to meet at small and medium-sized batches in external grinding of high precision parts in high production and may grinding any type of parts, combining plunge grinding cycles, multiple plunge, plunge with oscillation and traverse.
                  • Futura E-400 / E-400 i Grindstone Ø406

                  • CNC External Cylindrical Grinder For Production
                • Features

                    • Application

                    • The Futura grinding machine was developed to meet at small and medium-sized business in processes external grinding of high precision parts in high production and may perform programmatically any type of work piece, combining plunge grinding cycles, multiple plunge, plunge with oscillation and traverse with straight or angular grinding wheel.

                      Grinding profiles, taper grinding with interpolation or tilted table. A versatile machine with optimized cost / benefit ratio.
                    • Characteristics of heads / Automation

                    • Wheelhead
                      • Spindle assembled with high precision angular contact bearings.
                      • Peripheral wheel speed = 45 m / s.
                      • The wheelhead can be used in straight or angular position with inclination from 0 to 30 degrees.
                      • Automatic compensation of wheel dressing through CNC.

                      Workhead
                      • Can be operated with live or dead center.
                      • Spindle assembled with high precision angular contact bearings.
                      • CNC programmable revolutions from 20 to 1,000 rpm.
                      • Maximum load between centers = 80 kg.
                      • Internal taper = Morse # 4.
                      • Roundness precision = 0.0005 mm.

                      Tailstock
                      • Hydraulic quill openning , with axial adjustable spring pre-load.
                      • Device to correct cylindricity within ± 0.15 mm.
                      • Internal taper = Morse # 4.
                      • Stroke of quill = 35 mm.
                    • Applied Technology

                      • Cross slide with pre-loaded hydrostatic guides on X and Z axes.
                      • Displacements obtained through high precision recirculating ball screws, servo commanded by brushless motors and with absolute pulser coder.
                      • Linear and circular interpolation of axes in order to obtain any desirable profile.
                      • High positioning precision.

                      Hydrostatic System
                      • This system uses oil under high pressure to separate the sliding surfaces to avoid any possible wearing of the guides.
                      • Very low friction coefficient, eliminating the stick-slip, providing a smooth movement, free of vibrations.
                      • Total elimination of backlash.
                      • High stiffness.
                      • No wearing of the guides as there is no metallic contact between the moving parts.
                  • CNC Cylindrical grinding machine: Kargo

                  • CNC - External Cylindrical Grinder Heavy-duty Workpieces

                    The Kargo series was designed to meet the cylindrical grinding of rollers and heavy duty shafts applied lamination industries of steel, brass, aluminum, paper, electric motors, gearboxes, press, wind generators, among others.
                      • Kargo - 10 / Kargo - 30 / Kargo - 60

                      • CNC - External Cylindrical Grinder Heavy-duty Workpieces
                        Rebolo Ø760 ~ Ø1067
                    • Features

                        • Application

                        • The Kargo Series is characterized by:
                          • Capacity of supporting heavy and largeworkpieces;
                          • High precision;
                          • Availability of measurements in-process and post-process;
                          • Enhanced productivity;
                          • Flexibility tomeet family of parts;
                          • Quick set-up;
                          • High MTBF;
                          • Customized CNC to operate for each cell and part families;
                          • Low MTTR, the CNC oriented to aid by preventive maintenance
                          • instructions;
                          • Historical record of anomalies through alarms;
                          • High reliability (FMEA and FMECA);
                          • Meeting safety standards and standardization of client.
                        • Characteristics of heads / Automation

                        • Wheelhead
                          • Shaft mounted on hydrostatic bearings.
                          • Peripheral wheel speed: 45 m/s.
                          • Optional Wheel head tiltable.
                          • Automatic Balancing system built-in spindle.
                          • Automatic compensation of wheel dressing through CNC.
                          Workhead
                          • Dead centre.
                          • Live centre.
                          • Universal head: dead and live centre (hydrostatic).
                          • Programmed revolutions through CNC.
                          • Safety locking system with rack.
                          Tailstock head
                          • Manual quill opening and closing monitored with load cell.
                          • Dead or live centre (optional).
                          • Automatic quill opening and closing monitored with load cell.
                          • Micrometric device to correct cylindricity.
                          • Safety locking systemwith rack.
                        • Applied Technology

                          • Grinding wheel head with X and Z displacement obtained by pre-loaded hydrostatic guides.
                          • Displacement obtained through high precision recirculating ball screws, servo commanded by brushless motors with absolute encoder.
                          • Linear and circular interpolation of axes in order to obtain any desirable profile
                          • High positioning accuracy.

                          Hydrostatic System

                          • This system uses pressurized oil to separate the sliding surfaces to avoid any possiblewearing of the guides.
                          • Very low friction coefficient, eliminating the stick-slip, providing a smoothmovement, free of vibrations.
                          • Total elimination of backlash.
                          • High stiffness.
                          • Nowearing of the guides as there is nometallic contact between the moving parts.

                          Hydrostatic Bearings

                          • Used on grinding wheel and workpiece heads.
                          • The bearings with shaft radial and longituginal hydrostatic supports provide excellent vibration absorption dampening characteristics, perfect rotation with constant shaft centering.
                          • Absolutely no wearing, since there is no metal contact between spindle and bearing, even in standstill.
                          • Both spindle ends are provided with pneumatic retainers to avoid dirt penetration without heating.
                      • CNC Cylindrical grinding machine: Intertronika

                      • CNC Internal Cylindrical and Face Grinder

                        The Intertronika grinding machine was developed to grinding of small , medium and large batches of parts for high-precision . May grinding any type of parts, combining plunge grinding cycles, multiple plunge, plunge with oscillation and traverse among others.
                          • Intertronika IF-250-S / IF-500-S / IF-750-S

                          • CNC Internal Cylindrical and Face Grinder
                        • Features

                            • Application

                            • The Intertronika grinding machine was developed to meet to small and medium-sized business in processes of internal and faces grinding of high-precision parts, may perform programmatically any type of work piece, combining plunge grinding cycles, multiple plunge, plunge with oscillation and traverse, using straight or angular wheel. Grinding of profiles. Grinding of taper with interpolation or tilted table. A versatile machine with optimized cost / benefit ratio.
                            • Characteristics of heads / Automation

                            • Wheelhead For Internal Grinding
                              • Spindle assembled with high precision angular contact bearings.
                              • Variable speed of wheel drive AC motor through frequency inverter (OPTIONAL).
                              • Reinforced belt driver spindle enabling the grinding of holes with 200 mm depth.
                              • Possible tangential grinding of faces with inclination up to 8 degrees.
                              • Swivel wheel protection for operator safety.

                              Wheelhead for face Grinding
                              • Spindle assembled with high precision angular contact ball bearings.
                              • Cup type grinding wheel with Ø 200 mm.
                              • Enables the grinding of large worpieces in very short times.
                              • Swivel wheel protection for operator safety.

                              Dressing Device
                              • May be positioned in very place on the table.
                              • Enables the dressing of the wheel for internal and face grinding with automatic compensation through CNC.
                              • Optionally may be provided with swivel dressing device.

                              Workhead
                              • Spindle assembled with high precision taper roll bearings.
                              • CNC programmable revolutions from 20 to 700 rpm.
                              • Micrometric device to correct cilindricity with inclination within ± 15 degrees.
                              • Maximum load at spindle nose = 100 Nm.
                              • Obtained roundness precision = 0.5 μm.
                              • Internal taper = Morse # 4.
                            • Applied Technology

                              • Cross slides with pre-loaded hydrostatic guides on Xand Z axes.
                              • Displacements obtained through high precision recirculating ball screws, servo commanded by brushless motors and absolute encoder.
                              • Linear and circular interpolation of axes in order to obtain any desirable profile.
                              • High positioning precision.

                              Hydrostatic System
                              • This system uses oil under high pressure to separate the sliding surfaces to avoid any possible wearing of the guides.
                              • Very low friction coefficient, eliminating the stick-slip, providing a smooth movement, free of vibrations.
                              • Total elimination of blacklash.
                              • High stiffness.
                              • No wearing of the guides as there is no metallic contact between the moving parts.
                          • CNC Cylindrical grinding machine: Pratika U

                          • Universal Cylindrical

                            The Pratika grinding machine was designed to meet the demands of toolroom, maintenance and production of parts in medium and small batches as well as unique part with internal and external grinding operations. It can grinding any type of piece, combining plunge grinding cycles, multiple plunge and traverse.
                              • Pratika U-600-S / U-1200-S

                              • CNC Universal Cylindrical Grinder
                                Grindstone Ø406
                            • Features

                                • Application

                                • The Pratika Flexa grinding machine was designed to meet the demands of tooling, maintenance and production of parts in medium and small batches as well as unique pieces with internal and external grinding operations. It can perform programmatically any type of piece, combining plunge grinding cycles, multiple plunge and traverse, using straight or angular wheel. Grinding of profiles. Grinding of taper with interpolation or tilted table. Automatic compensation of dressing od grinding wheels through CNC. A versatile machine with optimized cost / benefit ratio.
                                • Characteristics of heads / Automation

                                • Wheelhead
                                  • Spindle assembled with high precision angular contact bearings.
                                  • Peripheral wheel speed of 33 m/s with Ø406 mm grinding wheel.
                                  • Inclination from 0 to 180 grade with high precision indexing through Hirth frontal gear, having a resolution of 2,5º and a repeatability of ± 1 second.
                                  • Manually rotated, with automatic locking and unlocking.
                                  • Standard spindle for internal grinding with 18.000 rpm.

                                  Workhead
                                  • Can be operated with live or dead center.
                                  • Spindle assembled with high precision angular contact bearings.
                                  • CNC programmed revolutions from 20 to 1,000 rpm.
                                  • Maximum load between centers = 80 kg.
                                  • Internal taper = Morse #4.
                                  • Roundness precision = 0.0005 mm.

                                  Tailstock
                                  • Hydraulic quill openning , with axial adjustable spring pre-load.
                                  • Device to correct cylindricity within ± 0.15 mm.
                                  • Internal taper = Morse # 4.
                                  • Stroke of quill = 35 mm.
                                  • Tailstock with diamond disk dressing tool incorporate
                                    (optional)
                                • Applied Technology

                                  • Cross slides with pre-loaded hydrostatic guides on X and Z axes.
                                  • Displacements obtained through high precision recirculating ball screws, servo commanded by brushless motors and with absolute encoder.
                                  • Linear and circular interpolation of axes in order to obtain any desirable profile.
                                  • High positioning precision.  

                                  Hydrostatic System

                                  • This system uses oil under high pressure to separate the sliding surfaces to avoid any possible wearing of the guides.
                                  • Very low friction coefficient, eliminating the stick-slip, providing a smooth movement,free of vibrations.
                                  • Total elimination of backlash.
                                  • High stiffness.
                                  • No wearing of the guides as there is no metallic contact between the moving parts.

                                  Easy to operate

                                  • Equipped with electronic handwheel which enable easy displacement on X and Z axes and great comfort on manual operation as well as for the self-apprenticeship of dimensions.
                                  • Operates with 3 resolutions, which can be directly selected, with 0.001
                                    0.01 0.1 mm.


                                     
                              • CNC Cylindrical grinding machine: Pratika L / M / H

                              • Universal Cylindrical

                                The Pratika grinding machine was designed to meet the demands of toolroom, maintenance and production of parts in medium and small batches as well as unique part with internal and external grinding operations. It can grinding any type of piece, combining plunge grinding cycles, multiple plunge and traverse.
                                  • Pratika L / M / H

                                  • Pratika Flexa 600 L / Flexa 1200-L Grindstone Ø406
                                    Pratika Flexa 1500-M Grindstone Ø508
                                    Pratika Flexa 2000-H / Flexa 3000-H Grindstone Ø760
                                    CNC Universal Cylindrical Grinder
                                • Features

                                    • Application

                                    • The Pratika Flexa grinding machine was designed to meet the demands of tooling, maintenance and production of parts in medium and small batches as well as unique pieces with internal and external grinding operations. It can perform programmatically any type of piece, combining plunge grinding cycles, multiple plunge and traverse, using straight or angular wheel. Grinding of profiles. Grinding of taper with interpolation or tilted table. Automatic compensation of dressing od grinding wheels through CNC. A versatile machine with optimized cost / benefit ratio.
                                    • Characteristics of heads / Automation

                                    • Wheelhead
                                      • Die cast single piece which may house up to 3 grinding wheel spindles: external, internal and swivel.
                                      • Programmable automatic swivelling within 0 to 180º range by the CNC with 1.25º precision nd positioning by Hirth crown gear.
                                      • Fractioning device for angular positioning with 15.7 secs revolution, positioned by Hirth crown gear (optional).

                                      Wheel head for OD
                                      • Spindle onto high precision assembled angular contact bearings
                                      • Swivel device for high frequency spindle (optional)
                                      • Peripheral speed = 45 m/sec
                                      • 7.5 HPmotor

                                      Swivel device for high frequency spindle (optional)
                                      • Assembled on the front of wheelhead with hydraulic system.
                                      • Housing Ø 100mm for high frequency spindle device.

                                      Rear grinding wheel spindle for ID or threads
                                      • 18,000 rpm belt drive spindle assembled onto high precision angular bearings.
                                      • Frequency inverter for rotation programmable control.

                                      Workhead
                                      • Can be operated with live or dead center.
                                      • Spindle assembled with high precision angular contact bearings.
                                      • CNC programmed revolution from 20 to 1,000 rpm.
                                      • Maximum load between centers = 80 kg.
                                      • Internal taper = Morse #4.
                                      • Roundness precision = 0.0005 mm.

                                      Tailstock
                                      • Hydraulic quill opening, with axial adjustable spring pre-load.
                                      • Device to correct cylindricity within ± 0.15 mm
                                      • Internal taper = Morse # 4.
                                      • Quill stroke = 35 mm.
                                    • Applied Technology

                                      • Cross slides with pre-loaded hydrostatic guides on X and Z axes.
                                      • Displacements obtained through high precision recirculating ball screws, servo commanded by brushless motors and absolute encoder.
                                      • Linear and circular interpolation of axes in order to obtain any desirable profile.
                                      • High positioning precision.

                                      Hydrostatic System
                                      • This system uses oil under high pressure to separate the sliding surfaces to avoid any possible wearing of the guides.
                                      • Very low friction coefficient, eliminating the stick-slip, providing a smooth movement, free of vibrations.
                                      • Total elimination of backlash.
                                      • High stiffness.
                                      • No wearing of the guides as there is no metallic contact between the moving parts.

                                      Easy to operate
                                      • Equipped with electronic handwheel which enable easy displacement on X and Z axes and great comfort on manual operation as well as for the self-apprenticeship of dimensions.
                                      • Operates with 3 resolutions, which can be directly selected, with 0.001 0.01 0.1 mm.
                                  • CNC Cylindrical grinding machine: Solutions

                                      • Roll Mill and Heavy Cilinders

                                      • Zema offers to the market of manufacture and recovering of Roll Mill:
                                        • Zema Grinding Machine: Kargo Series
                                        • Refurbishment and Retrofitting Service

                                        Software Wizard to Roll Mills grinding process
                                        • Two possibilities of applying the software was specially developed, providing ease of operation, reduced time for grinding part and increased quality at work, among other advantages.
                                      • Crankshaft

                                      • Zema offers solution for various crankshaft grinding operations used in vehicles, SUV´s and Trucks.
                                      • Injector Nozzle

                                      • Injector Nozzle is a component which very high precision is needed. They are produced with a strait manufacture process.

                                        Zema has solutions to the following grinding processes operations:
                                        • External Body (O.D operation) Grinding Process
                                        • External Cupola Profile Grinding Process
                                        • External Body and Cupola Profile Grinding Process made in the same operation
                                        • Needle gap grinding proces Operation: External Body Grinding Proces
                                      • Input Shaft Steering

                                      • Application: Grinding 3x1 – Groove Grinding, Diameter Grinding, Chanfer Profile Grinding.

                                        Configuration:
                                        • Wheel Head equipped with vertical axis and High Frequency Spindle.
                                        • Manual or Gantry Loader (optional) to Load and Unload.
                                        • Fanuc CNC control or Siemens CNC control.

                                        Relevant Features:

                                        • Required area floor reduction due to three operations are done on the same machine.
                                        • Perfect geometry of slots, they are rectified after heat treatment ensuring the profile of the flat.
                                        • Calibration of pre-existents slots or creep feed process (stock is removed with one or two passes).
                                        • Auxiliary screens for programming geometric profile of flats.
                                        • Technological Database of the part to be grind making easy the introduction of grinding process parameters.
                                        • Pressure Control of coolant programmable from CNC
                                      • Tripod for CV Joint

                                      • Application: Tripod Spider Stem Grinding.

                                        Configuration:
                                        • 1 Work Head with 1 Wheel Head or 2 Work Heads with 2 independent Wheel Head for higher production.
                                        • Straight wheel, Vitrified or CBN vitrified bond.
                                        • Gantry Loader with function to load/unload part and 120° part rotation.
                                        • GE Fanuc CNC control or Siemens CNC control.

                                        Important Features:

                                        • In Process Gage with function to measure the elliptical gap.
                                        • Special Software with function for many profiles and data bank for many parts (Easy Change Over).
                                        • Pallet system (carousel type) to load with autonomy up to 30 minutes and conveyor to unload.
                                      • Hydraulic Steering Worm

                                      • Application: simultaneous grinding profiled external and the blind hole of steering worm.

                                        Configuration:
                                        • 1 Work head with 1 O.D. wheel head and 1 internal grinding wheel head assembled with independent slides.
                                        • Angled wheel to external grind diameter and face.
                                        • Straight wheel to internal grind powered by high-frequency spindle
                                        • CNC Fanuc or Siemens CNC.

                                        Important Features:

                                        • Independent Programming.
                                        • Synchronized Cycles.
                                        • Can be supplied with in-process gage for external and post-process to measure the internal diameter.
                                      • Camshaft

                                      • Grinding Machine developed to O.D operation of the concentric diameters with only one part clamp.
                                      • RAF – Sharpening Tools Grinding Machine

                                      • Automatic Sharpening Machine user for broaches and slab mills.
                                      • Turbo Charger Shaft

                                      • Grinding machines for spindle, wheel shape and groove.