Rollomatic GrindSmart 830XW

$350,000 - $500,000 Updated 2026-03-11

Key Specifications

Spindle Power

14 kW peak

axes

6 (simultaneous interpolation)

tool diameter range

1 - 32 mm (0.040 - 1.25 in)

max tool length

300 mm (11.8 in)

rotation angle

240 degrees (machining on both sides)

spindle speed

12,000 RPM max

Overview

The Rollomatic GrindSmart 830XW is a 6-axis CNC tool grinding machine from the Swiss manufacturer Rollomatic, designed for high-precision production of rotary cutting tools in the 1 mm to 32 mm (0.040 to 1.25 in) diameter range. What sets Rollomatic apart from ANCA and Walter is their commitment to hydrostatic technology combined with linear motors, a pairing that delivers exceptional positioning accuracy and surface finish quality, particularly on smaller-diameter tools where every micron matters.

The 830XW's six axes interpolate simultaneously, with a kinematic system that allows machining on both sides of the tool via a total rotation angle of 240 degrees. This 6-axis design provides more degrees of freedom than typical 5-axis tool grinders, enabling complex tool geometries that would require multiple setups on other machines. The extra axis is particularly valuable for producing asymmetric tools, specialized step drills, and complex profile geometries.

The grinding spindle uses a synchronous motor with 14 kW peak power and rotational speed up to 12,000 RPM. While the spindle power is lower than ANCA's MX7 (38 kW) or Walter's Vision 400 (33 kW), Rollomatic's philosophy emphasizes precision over brute force. The hydrostatic guideways and linear motor drives deliver positioning accuracy that lets the machine make lighter, more precise passes rather than relying on heavy cuts.

The standout feature is the 15-station wheel and nozzle changer with a 5-second arbor-to-arbor change time, claimed as the world's fastest in the grinding industry. With capacity for up to 60 grinding wheels across the 15 stations, the machine can handle extremely complex multi-operation tools without running out of wheel positions. Each station includes automatic coolant nozzle positioning, ensuring optimal coolant delivery for every wheel.

Maximum tool overall length is 300 mm (11.8 in). The machine is designed and manufactured in Le Landeron, Switzerland. New machines typically price in the $350,000-$500,000 range depending on automation and configuration. Used units are rare on the secondary market due to Rollomatic's smaller install base compared to ANCA and Walter, but when available they typically sell in the $150,000-$300,000 range. Specs sourced from Rollomatic published data, Cutting Tool Engineering, Modern Machine Shop, and Nanogrind Technologies.

Full Specifications

Parameter	Value
Axes	6 (simultaneous interpolation)
Tool Diameter Range	1 - 32 mm (0.040 - 1.25 in)
Max Tool Length	300 mm (11.8 in)
Rotation Angle	240 degrees (machining on both sides)
Spindle Motor Power	14 kW peak
Spindle Speed	12,000 RPM max
Spindle Motor	Synchronous motor
Wheel Changer	15-station with automatic nozzle positioning
Wheel Change Time	5 seconds arbor-to-arbor
Max Wheel Capacity	60 grinding wheels (across 15 stations)
Guideway System	Hydrostatic with linear motors
Manufactured In	Le Landeron, Switzerland
CNC Control	Rollomatic CNC

Specifications sourced from rollomaticusa.com — verified 2026-03-28

Strengths & Limitations

Strengths

Hydrostatic guideways combined with linear motors deliver the highest positioning accuracy in the tool grinder class, producing superior edge quality on precision cutting tools
15-station wheel and nozzle changer with 5-second change time and 60-wheel capacity handles the most complex multi-operation tools without running out of wheel positions
6-axis simultaneous interpolation provides more degrees of freedom than 5-axis competitors, enabling complex asymmetric and multi-profile tool geometries in a single setup
Automatic coolant nozzle positioning on every wheel station ensures optimal coolant delivery for each grinding operation, critical for thermal management on carbide tools
32 mm maximum tool diameter is larger than the ANCA MX7's 25 mm standard range, covering a broader spectrum of cutting tool sizes
Fully Swiss-designed and manufactured in Le Landeron, with the build quality and precision engineering that implies

Limitations

14 kW spindle power is the lowest among tier-one tool grinders, limiting stock removal rate on larger tools and harder materials compared to ANCA (38 kW) and Walter (33 kW)
Rollomatic's smaller global install base means fewer shops have operator experience, potentially making it harder to hire experienced Rollomatic programmers
Proprietary Rollomatic CNC control, while powerful, means operators can't transfer their Fanuc or Siemens knowledge directly from other machines
Used machines are rare on the secondary market, limiting options for shops that prefer to buy pre-owned equipment
Service network is smaller than ANCA or United Grinding (Walter), which may mean longer service response times in some regions

Best For

Precision cutting tool manufacturers where edge quality and sub-micron consistency are the top priorities, particularly for aerospace and medical tooling Shops specializing in micro to small-diameter tools (1-16 mm) where Rollomatic's hydrostatic precision provides a measurable quality advantage Operations producing complex multi-operation tools that benefit from the 15-station wheel changer's 60-wheel capacity and 6-axis flexibility Swiss-quality-focused manufacturers who want fully European-designed and built equipment and value Rollomatic's engineering heritage Tool production facilities grinding carbide and cermet tools where the hydrostatic guideways deliver consistent results across long production runs Shops making specialized step tools, form tools, and asymmetric cutting tools that require 6-axis simultaneous machining capability

Frequently Asked Questions

01 What does a Rollomatic GrindSmart 830XW cost new and used?

New GrindSmart 830XW machines typically run $350,000-$500,000 depending on automation packages and configuration. Used units are uncommon on the secondary market due to Rollomatic's smaller install base, but when available they typically sell in the $150,000-$300,000 range. Rollomatic's pricing is competitive with the Walter Helitronic Vision 400 and slightly above the ANCA MX7 for comparable configurations.

02 Why does the 830XW have less spindle power than ANCA and Walter?

Rollomatic's design philosophy prioritizes precision over brute stock removal. The hydrostatic guideways and linear motors deliver positioning accuracy that enables lighter, more precise grinding passes. Rather than removing material aggressively with a high-powered spindle, the 830XW achieves results through superior motion quality. For the tool sizes in its 1-32 mm range, 14 kW is sufficient for efficient production. Shops grinding large tools above 25 mm in hard materials may prefer the higher spindle power of ANCA or Walter machines.

03 What's the advantage of 6 axes over 5 axes?

The sixth axis provides an additional degree of freedom that allows machining on both sides of the tool through a 240-degree rotation angle. This eliminates the need to re-chuck or reposition tools for complex geometries. It's particularly valuable for asymmetric tools, double-ended tools, and complex step profiles that would require multiple setups on a 5-axis machine. The practical result is fewer setups, tighter tolerances (no re-clamping error), and shorter cycle times on complex tools.

04 How does the 15-station wheel changer compare to competitors?

Most competing tool grinders offer 6-8 station wheel changers as standard. The 830XW's 15-station changer with capacity for 60 grinding wheels is the largest in its class, and the 5-second arbor-to-arbor change time is claimed as the world's fastest. This is a genuine production advantage for shops making complex tools that require many different wheel profiles. Combined with automatic coolant nozzle positioning, the system minimizes non-cutting time in production.

05 How does the 830XW compare to Rollomatic's GrindSmart 630XW?

The 830XW is the larger-capacity machine in the GrindSmart lineup, handling tools up to 32 mm diameter compared to the 630XW's smaller range. The 830XW also has the more powerful spindle and larger wheel changer. The 630XW is optimized for micro and small-diameter tools where its more compact design provides slightly better rigidity-to-size ratio. Most shops choose based on their maximum tool diameter requirements.