Kern Microtechnik 5-Axis Machining Centers

Kern Micro Vario

$700,000 - $1,100,000 Updated 2026-03-14

Key Specifications

X Travel

500 mm (19.7 in)

Y Travel

500 mm (19.7 in)

Z Travel

300 mm (11.8 in)

Tool Capacity

Up to 209 tools

Spindle Power

Up to 8.5 kW (11.4 hp)

Max Workpiece ⌀

300 mm (11.8 in)

Overview

The Kern Micro Vario is Kern Microtechnik's versatile ultra-precision 5-axis machining center, bridging the gap between the entry-level Evo and the flagship Micro HD. With 500 x 500 x 300 mm of travel and hydrostatic guideways on all linear axes, the Micro Vario delivers the same zero-stick-slip motion quality as the Micro HD but in a more flexible configuration that supports a wider range of spindle and automation options. It is a machine built for shops that need top-tier micro-precision but want configurability to match their specific applications.

The hydrostatic guideway system is the defining feature that separates the Micro Vario from conventional high-precision machining centers. Oil-film bearings on each linear axis provide frictionless motion with positioning accuracy below 1 micrometer, which puts the machine in the same accuracy class as jig borers and coordinate measuring machines. The polymer concrete base absorbs vibration at the source, and Kern's thermal management system controls temperature across the spindle, base, drives, and coolant circuit.

The "Vario" designation reflects the machine's configurability. Kern offers multiple spindle options including HSK-E40 and HSK-E50 interfaces with speed ranges from 36,000 to 50,000 RPM, allowing shops to optimize for their primary materials and cutter diameters. The trunnion-style rotary table uses direct-drive torque motors and accepts workpieces up to 300 mm diameter. Tool magazine capacity scales from the standard configuration up to 209 positions for complex multi-operation jobs.

For production environments, the Micro Vario supports Kern's pallet handling system for automated workpiece loading, and the Heidenhain TNC 640 control manages the full 5-axis simultaneous machining capability. Surface finishes below Ra 0.1 um are standard, with sub-Ra 0.05 um achievable depending on material and cutting strategy. The machine serves medical device, mold and die, watchmaking, and micro-electronics customers who need Kern-level accuracy with the flexibility to adapt the machine to evolving part requirements.

Full Specifications

Parameter	Value
X-Axis Travel	500 mm (19.7 in)
Y-Axis Travel	500 mm (19.7 in)
Z-Axis Travel	300 mm (11.8 in)
Spindle Speed	Up to 50,000 RPM (configurable)
Spindle Motor Power	Up to 8.5 kW (11.4 hp)
Tool Capacity	Up to 209 tools
Tool Interface	HSK-E40 or HSK-E50 (configurable)
Max Workpiece Diameter	300 mm (11.8 in)
Max Workpiece Weight	80 kg (176 lb)
Positioning Accuracy	< 1 um
Surface Finish	Ra < 0.1 um standard; Ra 0.05 um achievable
Guideway Type	Hydrostatic on all linear axes
Rotary Axes	A-axis / C-axis trunnion, direct-drive torque motors
Machine Base	Polymer concrete (mineral cast)
CNC Control	Heidenhain TNC 640
Machine Weight	Approx. 7,000 kg (15,432 lb)

Strengths & Limitations

Strengths

Hydrostatic guideways deliver sub-micron positioning accuracy with zero stick-slip, matching the Micro HD's motion quality
Configurable spindle options (HSK-E40/E50, up to 50,000 RPM) let shops optimize for their specific materials and applications
209-tool magazine capacity and pallet automation support complex lights-out production in precision applications
Polymer concrete base with comprehensive thermal management maintains accuracy during long unattended cycles
Full 5-axis simultaneous machining with direct-drive torque motors on the trunnion table
Flexible configuration adapts to evolving part requirements without being locked into a single application

Limitations

Starting price around $700,000 is still a major investment, though more accessible than the Pyramid Nano
80 kg max workpiece weight and 300 mm table diameter limit the machine to small precision parts
Hydrostatic systems require regular oil maintenance and monitoring to maintain specified accuracy levels
Kern's service and support infrastructure outside central Europe is thin compared to larger builders
The variety of configuration options can make specifying the right machine complex without deep application knowledge

Best For

Medical device manufacturers needing configurable precision for varying implant and instrument geometries Mold and die shops producing precision inserts where sub-micron accuracy eliminates secondary finishing Shops wanting Kern hydrostatic accuracy with flexibility to change spindle and tooling configurations over time Production environments running lights-out micro-precision work with pallet automation Multi-material shops machining hardened steels, titanium, and exotic alloys that benefit from configurable spindle options Contract manufacturers serving optical, medical, and electronics customers with varying precision requirements

Frequently Asked Questions

01 What does a Kern Micro Vario cost?

New Kern Micro Vario machines typically range from $700,000 to $1,100,000 depending on spindle selection, tool magazine size, and automation options. The wide configuration range means pricing varies significantly based on the specific build.

02 How does the Micro Vario differ from the Micro HD?

The Micro Vario and Micro HD share the same travel envelope and hydrostatic guideway system. The Vario emphasizes configurability with multiple spindle interface options and flexible automation, while the Micro HD is optimized as a turnkey micro-finishing platform. In practice, the accuracy and surface finish capabilities are very similar.

03 What spindle options are available?

Kern offers HSK-E40 and HSK-E50 spindle interfaces on the Micro Vario with speed ranges up to 50,000 RPM. The choice depends on the typical cutter diameters and materials in the shop's workload. HSK-E40 suits the smallest micro-cutters, while HSK-E50 handles slightly larger tools.

04 Can the Micro Vario be automated for production?

Yes. Kern offers integrated pallet handling systems for the Micro Vario, and the 209-tool magazine supports extended unattended operation. The Heidenhain TNC 640 control provides job scheduling and management for production environments.

05 What surface finishes can the Micro Vario achieve?

Surface finishes below Ra 0.1 um are standard capability. With optimized tooling and cutting strategies, Ra 0.05 um is achievable on hardened steels. This level of finish eliminates polishing on many precision mold and medical device applications.