About Komtronic

Used KomTronic U-Axis Systems for Sale

Resell CNC is your Simple. Reliable. and Trusted.® source for used KomTronic CNC-controlled U-axis tooling — including U-axis actuating systems, high-performance boring heads, contouring and facing heads, front tools, stators, signal modulators, and complete KomTronic system packages. We carry KomTronic products across the full range, from UAS-115 compact systems through UAS-160 heavy-duty units and HPS high-performance systems, in HSK63, HSK100, and other spindle interface configurations.

KomTronic is the mechatronic tooling brand of KOMET, the German precision tool manufacturer founded in 1918 by Robert Breuning. The company has traded under the KOMET name since 1924 and has been headquartered in Besigheim, Germany, since 1948. KOMET built a global reputation as a technology leader in high-precision drilling, reaming, milling, threading, and actuating tool systems, operating 10 production sites with more than 1,500 employees across 50 countries. In October 2017, KOMET was acquired by the CERATIZIT Group, a Luxembourg-based international hard material and cutting tool company. KomTronic products are now part of the CERATIZIT "Team Cutting Tools" portfolio alongside KOMET, WNT, and KLENK brands. In North America, KomTronic systems were distributed through KOMET of America, Inc. in Schaumburg, Illinois. The KomTronic U-axis system adds a freely programmable radial slide (U-axis) to standard CNC machining centers, enabling turning, contouring, facing, and complex boring operations that would otherwise require dedicated turning machines or special-purpose equipment.

Looking to sell your KomTronic? Resell CNC buys used KomTronic equipment nationwide, covering any system, any configuration, and any condition. Free appraisal within 24 hours, competitive offers, and we handle all logistics. Call (844) 478-8181 or email sales@resellcnc.com.

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KomTronic U-Axis Actuating Systems

The KomTronic U-axis system uses an internal stepper motor with glass-scale feedback for direct path measurement, delivering precise radial slide positioning during machining. Integration to the machine CNC control is achieved through a machine-mounted stator and signal modulator, effectively adding a programmable U-axis to any compatible machining center. The system supports automated size adjustments through inline gaging or probing, contour boring of complex profiles, reverse tapers, seal grooves, and face machining at bore bottoms. IP67 protection, through-coolant operation, and RFID chip integration are standard features.

KomTronic Front Tools & Custom Solutions

KomTronic systems accept custom-made front tools that carry the cutting inserts for specific bore diameters, contours, and surface requirements. Standard and special front tools are available for internal boring, external machining, facing, grooving, and complex profile generation. The combination of the programmable U-axis with application-specific front tools allows a single KomTronic system to machine multiple bore diameters, contours, and face profiles in a single setup, eliminating tool changes and secondary operations.

KomTronic System Integration & Monitoring

KomTronic systems integrate with standard CNC machining center controls through the stator/modulator interface. A built-in web server provides remote access to system status, diagnostics, and configuration from any connected device. HSK spindle interfaces (HSK63, HSK100, and others) ensure compatibility with modern machining center spindles. The system supports automatic tool change through standard ATC grippers and carousel interfaces.


Manufacturer	KOMET (founded 1918, Besigheim, Germany)
Current Owner	CERATIZIT Group (acquired KOMET October 2017)
North American Office	KOMET of America, Inc., Schaumburg, Illinois
Best Known For	CNC-controlled U-axis boring, facing, and contouring on machining centers
Popular Models	UAS-115-2, UAS-160-3, HPS-115-2 (High-Performance System)
Core Technology	Stepper motor with glass-scale feedback, stator/modulator CNC integration, IP67
Industries Served	Automotive (engine/transmission), aerospace, hydraulics, energy, general manufacturing

What to Look for When Buying a Used KomTronic System

KomTronic U-axis systems are precision mechatronic tools that combine mechanical actuating hardware with electronic control and feedback. Here is what to inspect on used units.

Test the U-axis slide and stepper motor. The KomTronic's core function is its radial slide driven by an internal stepper motor. Verify smooth, backlash-free slide motion across the full stroke range (typically 2 to 3 mm depending on model). Command the slide to specific positions and verify accuracy against the glass-scale feedback reading.

Verify the glass-scale feedback system. The direct path measurement system uses a glass scale to provide closed-loop position feedback to the CNC control. Confirm that the glass scale reads consistently and accurately across the full stroke. Erratic signals indicate a damaged scale or contaminated read head.

Test the stator and signal modulator. The machine-mounted stator and signal modulator form the communication link between the rotating KomTronic tool and the stationary CNC control. Verify reliable power transfer and signal communication at operating speed. Check stator alignment.

Inspect the HSK interface and body condition. Check the HSK taper (HSK63 or HSK100 depending on model) for fretting, scoring, or wear. Verify that the tool seats properly in the machine spindle with full face and taper contact. Inspect the tool body for impact damage, coolant passage blockage, and RFID chip function. Confirm that the IP67 sealing is intact, as coolant intrusion damages the internal electronics and motor.

KomTronic UAS-115 Series

The UAS-115-2 is the compact KomTronic U-axis system with a 115 mm body diameter, 2 mm total stroke (plus or minus 1 mm), and HSK63 spindle interface. This is the most commonly traded KomTronic model on the used market. The 115 mm body fits standard ATC pockets on most horizontal and vertical machining centers. Direct path measurement via glass scale provides positioning accuracy for precision boring and contouring. Through-coolant operation at up to 40 bar pressure delivers coolant directly to the cutting edge. The UAS-115 serves automotive engine block and transmission housing applications where multiple bore diameters and seal grooves must be machined in a single setup.

KomTronic UAS-160 Series

The UAS-160-3 provides a larger 160 mm body diameter with 3 mm total stroke and HSK100 spindle interface for heavy-duty applications requiring greater cutting forces and larger bore ranges. The increased body mass and larger HSK100 interface deliver superior rigidity for interrupted cuts and demanding materials. UAS-160 systems serve applications in large engine blocks, hydraulic valve bodies, heavy equipment components, and energy sector parts where bore diameters and contour depths exceed the capacity of the UAS-115.

KomTronic HPS High-Performance System

The HPS-115-2 (High-Performance System) builds on the UAS-115 platform with enhanced feed rates and positioning speed for high-volume production environments. Within the central portion of the stroke range (plus or minus 0.5 mm), the HPS delivers feed rates up to 80 mm per minute, enabling faster cycle times on production boring and facing operations. The HPS targets automotive and hydraulic component manufacturing where takt time requirements demand maximum U-axis feed performance.

KomTronic Applications & Capabilities

The KomTronic U-axis transforms a standard machining center into a versatile boring and contouring platform. A single KomTronic tool can bore multiple diameters in one setup by programming different U-axis positions for each bore. Complex internal contours, including reverse tapers, bottle bores, seal grooves, and asymmetrical profiles, can be generated by coordinating the U-axis with the machine's Z-axis feed. Face machining at the bottom of bores eliminates secondary operations on dedicated facing equipment. Inline gaging or probing enables automated size compensation for extended unattended production.

How to Sell Your Used KomTronic

KomTronic U-axis systems hold strong resale value thanks to high original cost, specialized capability, and consistent demand from automotive, aerospace, and hydraulic component manufacturers. UAS-115 and HPS-115 systems are in particularly high demand on the secondary market.

Resell CNC buys used KomTronic systems, every model and configuration, nationwide.

Contact us — call (844) 478-8181 or email sales@resellcnc.com.
Free appraisal within 24 hours, no obligation.
Accept the offer — we handle packaging, shipping, and logistics.

Frequently Asked Questions About Used KomTronic Systems

Is used KomTronic equipment reliable?

Yes. KomTronic systems are manufactured by KOMET (now CERATIZIT), a German precision tool maker with over 100 years of engineering expertise. The stepper motor and glass-scale feedback design provides consistent positioning accuracy over long service life. Used systems with verified slide function, intact sealing, and clean feedback signals continue to perform to original specifications.

What is the relationship between KomTronic, KOMET, and CERATIZIT?

KomTronic is a product brand of KOMET, the German precision tooling company founded in 1918. KOMET was acquired by the CERATIZIT Group in October 2017. KomTronic products are now sold under the CERATIZIT/KOMET banner as part of the "Team Cutting Tools" portfolio. Used systems may carry KOMET or CERATIZIT branding depending on manufacturing date.

What should I inspect before buying a used KomTronic?

Test the U-axis slide for smooth, accurate motion across full stroke. Verify glass-scale feedback consistency. Test stator and signal modulator communication at operating speed. Inspect the HSK interface for wear. Confirm IP67 seal integrity and through-coolant function.

What machines are compatible with KomTronic?

KomTronic systems fit horizontal and vertical machining centers with HSK63 or HSK100 spindle interfaces and standard ATC capability. The machine-mounted stator and signal modulator must be installed for CNC integration. Contact Resell CNC at (844) 478-8181 to verify compatibility with your machine.

What KomTronic products hold their value best?

UAS-115-2 systems with HSK63 interface maintain the strongest resale values due to broad machine compatibility. HPS-115-2 high-performance systems command premiums. Complete packages with stator, modulator, and front tools are most desirable. Call (844) 478-8181 for valuations.

How do I sell my used KomTronic system?

Contact Resell CNC at (844) 478-8181 or sales@resellcnc.com. We buy all KomTronic and KOMET actuating tool products nationwide, from individual U-axis heads through complete system packages with stators, modulators, and front tools. Free appraisal within 24 hours.