Walter

About Walter

Used Walter CNC Tool Grinders for Sale

Resell CNC is your Simple. Reliable. and Trusted.® source for used Walter Maschinenbau CNC tool and cutter grinders, eroding machines, and non-contact measuring centers. Whether you are sourcing a HELITRONIC POWER for production endmill and drill grinding, a HELITRONIC VISION for high-end volume work with linear-motor precision, a HELITRONIC POWER DIAMOND for combined PCD erosion and carbide grinding, or a HELICHECK measuring machine to round out a tool-room cell, our team helps cutting tool manufacturers, contract grinders, and resharpening shops find the right Walter for the job. Note: this page covers Walter Maschinenbau GmbH grinding machines, not the Walter Tools cutting tool brand.

Walter has been writing tool grinding history since 1919, when Richard Walter founded Walter Montanwerke in Düsseldorf and quickly added a second location in Tübingen. After relocating headquarters to Tübingen in 1924 and patenting cemented carbide ("Dynit") in 1926, the company grew into a leading German machine tool builder. Walter pioneered several industry firsts: the original HELITRONIC POWER set the benchmark for CNC tool grinding (more than 3,000 in service worldwide), the HELITRONIC POWER DIAMOND introduced the first "Two-in-One" eroding-and-grinding concept on a single machine, and the HELITRONIC VISION (debuted at EMO 2003) was the first tool grinder built with a mineral-cast machine bed and linear technology in all three linear axes.

Walter Maschinenbau GmbH is headquartered in Tübingen, Germany, with a major production facility in Kurim (near Brno), Czech Republic, where the brand has built grinding, eroding, and measuring machines for more than 25 years. Walter joined the Schleifring Group in 2004 (rebranded as the UNITED GRINDING Group in 2013) and forms the Tool Machining technology group together with EWAG. The company employs around 600 people. North American sales, applications, training, parts, and service are provided through UNITED GRINDING North America, Inc., headquartered in a 110,000 sq ft consolidated facility in Miamisburg, Ohio (Dayton area), with nearly 200 employees serving the United States, Canada, and Mexico. Walter Grinders USA originally opened in Fredericksburg, Virginia as the brand’s first overseas branch and was later consolidated into the Miamisburg headquarters.

The current Walter portfolio centers on the HELITRONIC tool grinding line (RAPTOR, RAPID, G200, MINI PLUS, MICRO, POWER, POWER 400, VISION, and VISION 400 L), the HELITRONIC DIAMOND family for combined erosion and grinding (DIAMOND EVOLUTION, POWER DIAMOND 400, VISION DIAMOND 400 L), and the HELICHECK measuring line (NANO, PLUS, PLUS LONG, PRO, PRO LONG). Modern machines run on Fanuc CNC with Walter’s proprietary HELITRONIC TOOL STUDIO software for cutting-tool design, simulation, and grinding-program generation.

Looking to sell a Walter HELITRONIC tool grinder, DIAMOND eroding machine, or HELICHECK measuring center? Resell CNC pays top dollar for clean, well-maintained Walter equipment. Our buying team handles inspection, rigging coordination, and payment so you can clear floor space quickly. Call (844) 478-8181 or email sales@resellcnc.com for a free, no-obligation appraisal.

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About Walter Maschinenbau Tool Grinders

Walter has spent more than a century building the machines that make cutting tools. The HELITRONIC family is one of the most widely deployed tool grinder platforms in the world, with thousands of units in production at cutting tool manufacturers, contract grinders, resharpening shops, and medical and aerospace tool producers globally. Walter’s reputation rests on heavy gantry construction, mineral-cast machine beds for vibration damping, direct-drive spindles with liquid cooling, in-house TOOL STUDIO programming software, and a complete line of compatible HELICHECK non-contact measuring machines. The result is a tool-room ecosystem where grinding, erosion, and measurement use the same software language and the same engineering philosophy.

Walter HELITRONIC Tool Grinding Machines

The HELITRONIC tool grinding family covers the full range from compact entry-level machines to high-end production grinders. The HELITRONIC G200 and HELITRONIC RAPID/RAPTOR are entry-level grinders with small footprints, ideal for resharpening shops and lower-volume production of rotationally symmetrical tools (RAPTOR handles tools 3 to 320 mm in diameter). The HELITRONIC MINI PLUS and HELITRONIC MICRO target small and medium diameters, with MICRO purpose-built for high-end micro-tool production. The HELITRONIC POWER (and the modern HELITRONIC POWER 400) is the workhorse production grinder, deployed at thousands of cutting tool plants worldwide and known for flexibility in volume production. The HELITRONIC VISION and VISION 400 L sit at the top of the line, with mineral-cast bases, linear motors and torque motors in all axes, and the highest accuracy and dynamics for volume tool production with lengths up to 420 mm.

Walter HELITRONIC DIAMOND Eroding and Grinding

The DIAMOND family extends the HELITRONIC platform to PCD, PCBN, and other ultra-hard cutting tool materials. The HELITRONIC DIAMOND EVOLUTION is the entry-level "Two-in-One" eroding-and-grinding machine. The HELITRONIC POWER DIAMOND 400 erodes PCD and CBN tools and grinds HSS and carbide tools on the same machine. The HELITRONIC VISION DIAMOND 400 L brings linear-motor precision to combined eroding and grinding for the most demanding tool-room work.

Walter HELICHECK Non-Contact Measuring Machines

The HELICHECK family complements the grinding line with fully automatic CNC non-contact measuring machines. HELICHECK NANO measures the smallest tools from 0.1 mm in diameter. HELICHECK PLUS is the universal measuring machine for both micro tools and standard tools, with operator-independent transmitted-light and incident-light measurement. HELICHECK PRO measures tools 1 to 150 mm in diameter and up to 330 mm in length; the PRO LONG variant extends length capacity to 730 mm and tool weight to 25 kg. HELICHECK machines are ideal additions to a Walter or mixed-brand tool room.

Walter at a Glance

Founded	1919 by Richard Walter in Düsseldorf as Walter Montanwerke. Headquarters relocated to Tübingen, Germany in 1924. First patents for cemented carbide ("Dynit") filed in 1926. Now operating as Walter Maschinenbau GmbH.
Headquarters	Walter Maschinenbau GmbH headquartered in Tübingen, Germany, with a major production facility in Kurim (near Brno), Czech Republic. Around 600 staff worldwide. Joined the Schleifring Group in 2004 and is now part of the UNITED GRINDING Group, owned by Körber AG.
US Operations	UNITED GRINDING North America, Inc., 110,000 sq ft headquarters in Miamisburg, Ohio (Dayton area). Walter Grinders USA originally opened in Fredericksburg, Virginia and was consolidated into the Miamisburg headquarters. Nearly 200 employees serving the United States, Canada, and Mexico.
Best Known For	HELITRONIC universal CNC tool and cutter grinders (3,000+ HELITRONIC POWER machines in service worldwide). First "Two-in-One" eroding-and-grinding machine (HELITRONIC POWER DIAMOND). First tool grinder with mineral-cast bed and linear technology in all linear axes (HELITRONIC VISION, 2003). Complete HELICHECK non-contact measuring line.
Popular Models	HELITRONIC RAPTOR, RAPID, G200, MINI PLUS, MINI POWER, MICRO; HELITRONIC POWER, POWER 400; HELITRONIC VISION, VISION 400 L; HELITRONIC DIAMOND EVOLUTION, POWER DIAMOND 400, VISION DIAMOND 400 L; HELICHECK NANO, PLUS, PLUS LONG, PRO, PRO LONG.
CNC Controls & Software	Modern: Fanuc CNC. Earlier generations: Walter HMC 600, HMC 500 (Windows-based), and HMC 400. Programming and simulation: HELITRONIC TOOL STUDIO (current), with Sketcher and other Walter software packages. UNITED GRINDING Digital Solutions are available on current platforms.
Industries Served	Cutting tool manufacture (endmills, drills, taps, reamers, step drills, form cutters, broaches, hob mills), aerospace, medical (orthopedic implants and surgical tools), woodworking tooling, automotive, and tool-and-die.
Technology Highlights	Heavy gantry construction, mineral-cast machine bed (16,500 lb on VISION), linear motors and torque motors in all axes on VISION platforms, direct-drive liquid-cooled spindles, "Two-in-One" eroding-and-grinding architecture on DIAMOND models, Laser Contour Check option for unmanned production on VISION, integrated autoloaders and pallet loaders.

Used Walter Buying Guide: What to Inspect Before You Purchase

Walter HELITRONIC tool grinders are designed for decades of production work, and a properly maintained example will hit production tolerances long after most general-purpose tool grinders would have been retired. The four areas below apply across the HELITRONIC tool grinding, DIAMOND eroding, and HELICHECK measuring lines.

HMC Control Generation, TOOL STUDIO Software, and Licenses

Walter machines have shipped on several control generations: legacy HMC 400 and HMC 500 (Windows-based), HMC 600, and current Fanuc CNC on the latest HELITRONIC POWER 400 and other current platforms. Confirm the control generation, the installed HELITRONIC TOOL STUDIO version, and that all software licenses (TOOL STUDIO, Sketcher, WWM, step-tool packages) are transferable. Older HMC 500 machines on Windows XP can still produce excellent tools but should be evaluated for long-term IT and parts support.

Spindle, Axis Drives, and Linear Motor Health (VISION)

HELITRONIC POWER spindles are direct-driven motor spindles with liquid cooling and ball-screw axis drives traversing up to 15 m/min. Document spindle hours, bearing condition, and any rebuild history. On VISION and VISION 400 L, linear and torque motors drive all axes against the 16,500 lb mineral-cast bed; pull recent error and alarm logs for thermal events, encoder faults, or position errors. Verify spindle taper interface (HSK is common) and any history of crashes.

Erosion Generator and Wheel/Wire Setup (DIAMOND Models)

HELITRONIC POWER DIAMOND, DIAMOND EVOLUTION, and VISION DIAMOND machines combine wire EDG erosion for PCD and CBN with conventional grinding for HSS and carbide. Verify erosion generator function, wire feed system condition, and any history of arc damage. Confirm the machine can run both modes, since some used DIAMOND machines arrive with the erosion side disabled. Inspect dielectric coolant filtration separately from grinding coolant.

Loader, Autoloader, Pallet System, and Filtration

Walter machines are commonly configured with autoloaders (up to 297 tools on VISION), pallet loaders, multi-position wheel changers, and 1-micron coolant filtration. Cycle each automation element, inspect grippers and probe contacts, and verify the Smart Probe tool-measuring function calibrates correctly. Check coolant chiller and mist extraction capacity. Fire suppression systems are common and should be tested.

Walter Machine Series Overview

Entry and Mid-Range HELITRONIC (G200, RAPTOR, RAPID, MINI PLUS, MICRO)

The HELITRONIC G200 is a compact, cost-efficient grinder with a small footprint. RAPTOR is the entry-level rotationally-symmetric grinder for tools 3 to 320 mm in diameter. RAPID is a newer entry platform. MINI PLUS handles small and medium diameters flexibly. MICRO is the high-end micro-tool grinder.

Production HELITRONIC (POWER, POWER 400, MINI POWER)

The HELITRONIC POWER is Walter’s benchmark CNC tool grinder, with more than 3,000 in service worldwide. The current HELITRONIC POWER 400 offers maximum flexibility in volume production with Fanuc CNC, three linear axes on ball screws, liquid-cooled motor spindles, and TOOL STUDIO programming. Legacy MINI POWER and POWER variants are common on the used market and remain capable production machines for endmills, drills, reamers, and form tools.

High-End HELITRONIC VISION (VISION, VISION 400 L)

The HELITRONIC VISION (debuted 2003) was the first tool grinder with a mineral-cast bed and linear technology in all linear axes. VISION 400 L extends the platform to tool lengths up to 420 mm with the highest accuracy and dynamics in volume production. The 2022 Laser Contour Check upgrade enables in-process tool measurement without removal for unmanned production.

HELITRONIC DIAMOND and HELICHECK Measuring

The DIAMOND family (DIAMOND EVOLUTION, POWER DIAMOND 400, VISION DIAMOND 400 L) erodes PCD and CBN and grinds HSS and carbide on the same machine. The HELICHECK family (NANO, PLUS, PLUS LONG, PRO, PRO LONG) provides automatic non-contact measurement from 0.1 mm tools up to 730 mm length.

Sell Your Walter: Top Dollar, Fast Turnaround

Walter HELITRONIC machines hold value well thanks to long service life, OEM parts and applications support through UNITED GRINDING North America, and steady demand from cutting tool producers worldwide. Resell CNC pays competitive cash, coordinates inspection and rigging, and closes on your timeline.

Our 3-step sell process:

1. Contact us. Call (844) 478-8181 or email sales@resellcnc.com with model, year, hours, and configuration. Photos and recent service records help us quote faster.

2. Receive an appraisal. Our team reviews market comps, current demand, and machine condition to deliver a no-obligation cash offer, typically within one business day.

3. Accept and close. If you accept, we coordinate inspection, rigging, and payment so you can clear the floor on your schedule.

Frequently Asked Questions About Used Walter Machines

Are used Walter HELITRONIC tool grinders reliable?

Yes. Walter has built tool grinders since 1919, and the HELITRONIC platform has more than 3,000 POWER machines and growing fleets of VISION, MINI, and DIAMOND units in production worldwide. Well-maintained units run for decades with parts and service support from UNITED GRINDING North America in Miamisburg, Ohio.

What CNC controls and software do Walter machines use?

Modern Walter machines run on Fanuc CNC with HELITRONIC TOOL STUDIO programming software. Earlier generations used Walter HMC 400, HMC 500 (Windows-based), and HMC 600 controls, all common on the used market.

What should I inspect when buying a used Walter?

Focus on four areas: control generation (HMC or Fanuc) and TOOL STUDIO software licenses; spindle, ball screw, or linear motor health; erosion generator and wire system on DIAMOND models; and autoloader, probe, and coolant filtration function.

What is the difference between HELITRONIC POWER and VISION?

POWER is the workhorse production grinder with ball-screw linear axes and a heavy gantry, ideal for flexible volume production. VISION sits at the top of the line with a mineral-cast bed and linear and torque motors in all axes for the highest accuracy, dynamics, and surface finish on tool lengths up to 420 mm.

Can a Walter HELITRONIC POWER be used for PCD tools?

Standard HELITRONIC POWER and POWER 400 grinders handle HSS and carbide. For PCD and CBN tools you need a DIAMOND-series machine: POWER DIAMOND 400, VISION DIAMOND 400 L, or the entry-level DIAMOND EVOLUTION.

Does UNITED GRINDING still support older Walter machines?

UNITED GRINDING North America provides parts, applications, training, and field service from Miamisburg, Ohio. Older HMC 400 and HMC 500 machines may face limited control-spares availability over time; we verify support status as part of our pre-purchase inspection.

Can I finance a used Walter through Resell CNC?

Yes. We work with multiple equipment finance partners offering competitive rates. Visit our financing page or call (844) 478-8181.

How do I sell my Walter to Resell CNC?

Call (844) 478-8181 or email sales@resellcnc.com with model, year, hours, and configuration. We typically deliver a no-obligation appraisal within one business day and coordinate inspection, rigging, and payment.

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