11/08/2026
Available now : used Walter HELITRONIC MINI PLUS RAPID version CNC 5-Axis Tool Cutter Grinding Machine – Year 2025 made in Germany
| Manufacturer | WALTER |
| Model | HELITRONIC MINI PLUS – RAPID Version |
| Year of Construction | 2025 |
| Machine Type | CNC 5-Axis Tool & Cutter Grinding Machine |
| Condition | Like New (Used) |
| Functionality | Fully Functional |
| Operating Hours | Approx. 500 Hours |
| Machine Application | 5-axis CNC tool grinding machine especially designed for the production of end mills, drills, step drills, step tools, woodworking tools, profile blades and profile tools |
| MECHANICAL SYSTEM | |
| Machine Bed | Cast Iron Machine Bed in Gantry Design |
| Number of CNC Controlled Axes | 5 Axes |
| Axis Drive System | All CNC axes driven by identical digital AC servo motors |
| Axis Measuring System | Absolute Value System on Each Motor |
| Hardware Limit Switches | Not Required Due to Absolute Value Axis System |
| LINEAR AXES | |
| X-Axis – Longitudinal Slide | 320 mm (12.6″) |
| Y-Axis – Vertical Column | 200 mm (7.9″) |
| Z-Axis – Cross Slide | 470 mm (18.5″) |
| Maximum Linear-Axis Travel Speed | 15 m/min (600 IPM) |
| Maximum Linear-Axis Control Resolution | 0.0001 mm |
| ROTATIONAL AXES | |
| C-Axis – Rotary Table | ±200° |
| C-Axis Maximum Travel Speed | 20 rpm |
| Maximum Rotational-Axis Control Resolution | 0.0001° |
| C-Axis Torque Drive | Optionally Available |
| WORKPIECE / A-AXIS | |
| Workpiece Axis | A-Axis |
| Tool Attachment | ISO 50 |
| Center Height with Upper Table | 130 mm (5.12″) |
| Center Height without Upper Table | 160 mm (6.30″) |
| A-Axis Speed Range for Tool Grinding | 0 – 50 RPM |
| A-Axis Maximum Control Resolution | 0.0001° |
| A-Axis Torque Drive | Optionally Available |
| Cylindrical Grinding with Workhead | The Workhead Cannot Be Used for Cylindrical Grinding Tasks |
| GRINDING HEAD | |
| Grinding Spindle | Grinding Spindle with 2 Spindle Ends |
| Grinding Spindle Nose | HSK 50 |
| Grinding Spindle Diameter | 80 mm (3.15″) |
| Maximum Grinding Wheel Diameter | 150 mm (5.91″) |
| Grinding Spindle Drive | Progressively Adjustable, Digitally Controlled Through Servomotor |
| Grinding Spindle Peak Power | Maximum 9 kW (12.24 HP) |
| Grinding Spindle Speed | 0 – 10,500 RPM, Infinitely Variable |
| Spindle Lock | Included |
| Coolant Valves | 3 Coolant Valves per Grinding Spindle End, Controlled by Grinding Program |
| Lubrication System | Automatic Central Lubrication System |
| TOOL DIMENSIONS / CAPACITY | |
| Minimum Tool Diameter – Loading System / Regrinding | 3.0 mm (0.12″) |
| Minimum Tool Diameter – Square End Mills | 1.0 mm (0.04″) at Maximum Spiral Angle 60° |
| Minimum Tool Diameter – End Mills with Corner | 2.0 mm (0.08″), Minimum Corner Radius 0.2 mm at Maximum Spiral Angle 30° |
| Minimum Tool Diameter – Ball Nose End Mills | 2.0 mm (0.08″) at Maximum Spiral Angle 30° |
| Maximum Tool Diameter – Complete Grinding | 100 mm (3.94″) |
| Maximum Tool Length – Complete Grinding | 185 mm (7.28″) |
| Maximum Tool Length – Peripheral Grinding | 255 mm (10.04″) |
| Maximum Tool Length – End Teeth Grinding | 185 mm (7.28″) |
| Tool Length Reference | Measured from the Theoretical Gauge Line of the Workhead |
| Maximum Tool Weight | 30 kg (66 lbs) |
| Tool Capacity Note | Tool dimensions and weights depend on tool type, tool geometry, processing method and installed equipment options |
| CNC CONTROL | |
| CNC Control | GE Fanuc Series 31i-B5 |
| Control Panel | UNITED GRINDING Group C.O.R.E. PANEL |
| Display | 24″ Full HD Multi-Touch Display |
| Control Panel Design | Ergonomic Design |
| Electronic Key System | Integrated |
| Proximity Sensor | Integrated |
| Front Camera | Integrated HD Front Camera for Video Telephony with Customer Care Technicians |
| Override Switch | Override Switch with Integrated Cycle Start Button |
| C.O.R.E. E-Key Set | Included |
| Operator E-Key | Green OPERATOR E-Key |
| Setup E-Key | Yellow SETUP E-Key |
| SOFTWARE | |
| C.O.R.E. OS | UNITED GRINDING Group Operating System |
| C.O.R.E. OS Function | Software Infrastructure for Digital Products and C.O.R.E. APPS and Communication Between UNITED GRINDING Group Machines |
| C.O.R.E. IPC | UNITED GRINDING Group Standalone Industrial PC |
| IPC Operating System | Windows 10 Enterprise LTSC Version 1809 |
| C.O.R.E. HMI | UNITED GRINDING Group User Interface |
| HMI Operation | Operator-Centric Multi-Touch Interface with Gesture Control and User-Specific Arrangement of Control Elements |
| Tool Grinding Software | Helitronic Tool Studio |
| Helitronic Tool Studio Application | Production of Cylindrical, Tapered and Stepped Shank-Type Tools, Including Complex Special and Standard Tools |
| Helitronic Tool Studio Technology | Wizard Technology with On-Screen Tool Visualization for Verification and Optimization of Grinding Results |
| Helitronic Tool Studio Standard License | Included in Specification |
| Helitronic Tool Studio Advanced License | Included in Specification |
| Calibration Software | Automatic Calibration with Loader; Manual Calibration Possible on Machines without Loading System |
| Grinding Wheel Data Bank | Stores Electrodes and Grinding Wheel Sets with Dimensions Separately for Each Grinding Spindle |
| Grinding Wheel Bond Opening Program | Program Sequence for Opening the Bond of Grinding Wheels |
| Warm-Up Cycle | Included |
| Automatic Wheel Opening Operation | Available; Holder for Sharpening Stones Required |
| Cut-Off Operation | Y-Axis Plunging / A-Axis Turning |
| Remote Maintenance | Optional Solutions Available |
| WALTER WINDOW MODE (WWM) | Software Program Packages Available as Option |
| MACHINE COMPONENTS | |
| Work Table | Swivelling with C-Axis |
| Work Table T-Slots | 2 T-Slots for Mounting Auxiliary Equipment such as Tailstock or Steady Rest |
| Workpiece Clamping | Pneumatic Clamping Device with Quick Clamping System |
| Clamping System Location | Built into the Workpiece Holder |
| Automatic Tool Clamping | For Tools with ISO 50 Tapers According to DIN 69871 |
| Retention Knob Standard | DIN 69872, Form A |
| Clamping Air Pressure | 6 bar (87 PSI) |
| Wet-Grinding Housing | Integral Wet-Grinding Housing |
| Machine Doors | 1 Circular Sliding Door and 1 Assembly Door with Polycarbonate Glazing and Automatic Door Lock |
| Working Area Lighting | Internal Working Area Lighting |
| Explosion Protection | Explosion Lid with Emergency Stop |
| COOLANT SYSTEM | |
| Coolant Supply Connection | Machine-Side Coolant Valve for Connection to Central Coolant Supply System |
| Waste Oil Discharge Height | Approx. 580 mm (22.8″) |
| Coolant Unit | Band Filter Coolant Unit with Manual Paper Feed, Suitable for HELITRONIC MINI PLUS |
| Coolant Tank Capacity | 350 Litres (92.4 US gal) |
| Coolant Pump Capacity | 120 l/min (31.7 US gal/min) at 6 bar (87 PSI) |
| Filter Mat | 1 Roll Paramoll N260/100 |
| Filter Mat Width | 900 mm |
| Filter Mat Length | 30 m |
| Recommended Maximum Coolant Viscosity at 40°C | 8 mm²/s |
| Coolant Viscosity Note | Higher viscosity coolants may reduce flow rate, cleaning capacity and pump capacity |
| Coolant Level Sensor | Monitoring of Coolant Level Inside Machine Housing |
| HELI-PROBE MEASURING SYSTEM | |
| Heli-Probe | Automatic Positioning and Measuring System |
| Radial Tool Positioning | Automatic |
| Axial Tool Positioning | Automatic |
| Pitch Measurement | Included |
| Helical Pitch Measurement | Included |
| Cutting Insert Position Measurement | According to Grinding Program |
| Minimum Measurable Tool Diameter | Dependent on Tool Geometry |
| ELECTRICAL SYSTEM | |
| Type of Input Current | Three-Phase |
| Operating Voltage | 400 V / 3 Phase |
| Input Frequency | 50 Hz |
| Input Current | 30 A |
| Connected Load | Maximum 25 kVA at 400 V / 50 Hz |
| Electrical Protective System | IP54 |
| Maximum Permissible Voltage Fluctuation | ±5% |
| Maximum Permissible Frequency Fluctuation | ±1% |
| Maximum Ambient Temperature | +45°C (113°F) |
| Maximum Relative Humidity | 90% |
| Control Cabinet Cooling | Integrated CFC-Free Air Conditioner |
| Power Supply Requirement | Interruption of Power Supply Is Inadmissible |
| Recommended Electrical Network | Three-Wire Network with Earthed Neutral |
| Isolating Transformer | Required for Connection to Different Networks and Networks with Earth-Leakage Circuit Breakers |
| COMPRESSED AIR | |
| Required Air Pressure | 6 bar (87 PSI) |
| Air Consumption | Approx. 10,000 l/h (5.9 SCFM) |
| Compressed Air Quality | ISO 8573-1:2010 [5:6:4] |
| Permitted Solid Contamination | Less than 100,000 Particles of 1–5 µm Size per m³ |
| Maximum Pressure Dew Point | 10°C |
| Air Filtration | Installed Filters Provide Required Air Purity for Spindle Sealing Air and Measuring Systems |
| DIMENSIONS & WEIGHT | |
| Machine Depth / Length | 3,061 mm (121″) |
| Machine Width | 2,129 mm (84″) |
| Machine Height | 2,274 mm (90″) |
| Machine Weight | Approx. 3,300 kg (7,275 lbs) |
| Space Requirement Width | Approx. 3,000 mm |
| Space Requirement Length | Approx. 4,000 mm |
| Space Requirement Height | Approx. 3,000 mm |
| Installation Space Note | Exact space requirement depends on final machine equipment and applicable local machine installation regulations |
| Machine Base Color | Signal White RAL 9003 |
| ACCESSORIES & EQUIPMENT | |
| Fire Extinguishing System | DIMES CO2 Fire Extinguishing System |
| Fire Extinguishing Agent | CO2 |
| DIMES Control System | Integrated |
| DIMES Safety Device System | Included |
| CO2 Monitoring | Recognition of Fluctuation of CO2 |
| Extinguishing Agent Valve | Solenoid Valve with Fading Signaling Device |
| CO2 Availability Control | Electronic Availability Control |
| Vapor Extraction Connection | Coupling for Connection to Central Vapor Extraction System |
| Vapor Extraction Fire Protection | Automatic Protection Lid Against Fire |
| Holder for Sharpening Stones | Included |
| Tool Gripper | Included |
| Protective and Cleaning Arbor | Included |
| Plug Gauge | Included |
| Setting Disc | Included |
| Pull Stud | Included |
| Clamping Arbor for Hobs | Ø32 mm |
| Clamping Arbor for Hobs | Ø40 mm |
| Foot Operated Switch | Included – Used for Clamping and Unclamping the Collet and Can Operate Automatic Tool Support Systems if Installed |
| Keyboard Shelf | Included |
| GRINDING WHEEL ADAPTORS | |
| Standard Grinding Wheel Adaptor No. 1 | HSK50 Form A – d20 / D50 / L55 / L1=25 mm |
| Standard Grinding Wheel Adaptor No. 2 | HSK50 Form A – d20 / D50 / L55 / L1=45 mm |
| Standard Grinding Wheel Adaptor No. 3 | HSK50 Form A – d20 / D50 / L55 / L1=85 mm |
| TOOLS / PARTS & OPTIONS | |
| Part No. 10143191 | Foot Operated Switch |
| Part No. 92106689 | Dynamometric Key / Torque Wrench – 20–100 Nm |
| Part No. 92146277 | Dynamometric Key – 01–012 Nm |
| Part No. 92136151 | Mounting Wrench for Grinding Wheel Adaptors – For Grinding Wheels with 20 mm Bore |
| Part No. 60008217 | Coolant Level Sensor |
| Part No. 60025156 | Coolant Unit with Band Filter and Manual Paper Feed |
| Part No. 92147120 | Coupling for Connection to Central Vapor Extraction System with Automatic Fire Protection Lid |
| Part No. 60017123 | DIMES CO2 Fire Extinguishing System |
| ADDITIONAL MACHINE INFORMATION | |
| Rotational Speed Control | Infinitely Variable |
| Grinding Process | Wet Grinding |
| Machine Configuration | RAPID Version |
