Rollomatic NG 6300

$280,000 - $380,000 Updated 2026-03-17

Key Specifications

Number of CNC Axes

Tool Diameter Range

0.5 – 32 mm

Maximum Grinding Length

260 mm

Grinding Spindle Speed

Up to 10,000 RPM

Grinding Spindle Power

7.5 kW

Linear Axis Travel (X/Y/Z)

280 / 160 / 260 mm

Overview

The Rollomatic NG 6300 is a 6-axis CNC tool grinding machine engineered for medium-to-high production runs of solid carbide and HSS cutting tools. Built on Rollomatic's proven NG platform, the 6300 delivers repeatable submicron accuracy across extended production cycles, making it a preferred choice for job shops and captive tool rooms that need both versatility and throughput. The machine's hydrostatic spindle technology eliminates mechanical contact, ensuring consistent surface finish and extended spindle life even under continuous operation.

The NG 6300 accommodates tool diameters from 0.5 mm up to 32 mm, with a maximum grinding length of 260 mm, covering a wide range of end mills, drills, reamers, and step tools. Its six fully interpolating CNC axes — three linear and three rotary — enable complex helical flute geometries, variable pitch, and back-taper in a single setup. Integrated in-process gauging feeds dimensional data back to the CNC, enabling automatic tool compensation and significantly reducing scrap rates on long production runs.

Rollomatic's proprietary GrindSmart software suite provides an intuitive programming environment with a built-in tool library and collision simulation. Operators can import geometry from CAD files or use the parametric wizard to define tool geometry quickly. The machine accepts wheel packs in a tool-change carousel, allowing automatic wheel changes mid-cycle for complex multi-operation tools without operator intervention.

Designed for Swiss manufacturing precision, the NG 6300 is built on a polymer concrete (Granitan) base that provides superior vibration damping compared to cast iron, preserving surface integrity on high-value carbide substrates. The machine integrates with Rollomatic's SmartLoader automation system for lights-out operation, making it a strong production platform for mid-volume tool manufacturing.

Full Specifications

Parameter	Value
Number Of CNC Axes	6
Tool Diameter Range	0.5 – 32 mm
Maximum Grinding Length	260 mm
Grinding Spindle Speed	Up to 10,000 RPM
Grinding Spindle Power	7.5 kW
Linear Axis Travel (X/Y/Z)	280 / 160 / 260 mm
Positioning Accuracy	±0.001 mm
Repeatability	±0.0005 mm
Wheel Pack Capacity	6 positions
Machine Base Material	Granitan (polymer concrete)
Control System	Fanuc 31i-B5
Coolant System	High-pressure flood, 80 bar option

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

Strengths & Limitations

Strengths

Hydrostatic spindle eliminates bearing wear for long-term accuracy on production runs
6-axis simultaneous interpolation handles complex variable-pitch and back-taper geometries in one setup
Granitan base provides exceptional vibration damping, improving surface finish on carbide tools
Integrated wheel-change carousel reduces cycle time on multi-operation tools
GrindSmart software includes collision simulation, reducing setup risk on complex programs

Limitations

Higher capital cost than entry-level 5-axis grinders limits accessibility for small shops
Wheel pack carousel adds machine footprint and requires disciplined tooling management
GrindSmart software has a learning curve for operators new to parametric tool programming

Best For

Medium-to-high volume production of solid carbide end mills and drills Job shops running a wide variety of tool geometries requiring quick changeover Captive tool rooms needing lights-out operation via automation integration Precision tool manufacturers requiring submicron repeatability across long production runs

Frequently Asked Questions

01 What is the minimum tool diameter the NG 6300 can grind?

The NG 6300 can grind tools down to 0.5 mm in diameter, making it suitable for micro end mills and small-diameter drills used in medical device and electronics manufacturing.

02 Does the NG 6300 support automatic loading?

Yes. The machine integrates with Rollomatic's SmartLoader robotic loading system, enabling unattended production runs. The loader can handle tool blanks and finished tools with various gripper configurations.

03 How many grinding wheel packs can the carousel hold?

The standard wheel-change carousel accommodates up to 6 wheel packs, allowing automatic wheel selection mid-cycle for multi-operation grinding sequences without operator intervention.

04 What control system does the NG 6300 use?

The NG 6300 runs on a Fanuc 31i-B5 CNC control paired with Rollomatic's GrindSmart software, which provides the parametric tool programming interface and integrates with the Fanuc servo drives.

05 How does the Granitan base compare to cast iron for grinding applications?

Granitan (polymer concrete) has approximately 6–8x greater vibration damping capacity than cast iron. This reduces chatter transmitted to the workpiece, resulting in better surface finish, lower Ra values, and longer grinding wheel life.