Pietro Carnaghi spindle repair
Brochexpress is an independent workshop specialising in the repair, maintenance and diagnostics of Pietro Carnaghi spindles — the Italian world leader in medium and large vertical lathes, also a manufacturer of Unimill mobile-gantry milling machines.
Pietro Carnaghi, the Italian world leader in large vertical lathes
TLDR: Pietro Carnaghi (Italy) is a world-leading manufacturer of medium and large vertical lathes, with table diameters from 800 mm to 10,000 mm and a maximum turning diameter of up to 14 metres on twin-column configurations, as well as Unimill mobile-gantry milling machines.
A world leader in the production of medium and large vertical lathes, Pietro Carnaghi offers a range covering table diameters from 800 mm to 10,000 mm, with a maximum turning diameter of up to 14 metres on twin-column lathes. Since the 1970s, the guiding of the linear axes on every machine built by the manufacturer has relied on hydrostatic pads, helping to eliminate vibration and to guarantee constant geometric quality over time thanks to the absence of contact between the guideway surfaces. The manufacturer has also been producing, for several decades, mobile-gantry vertical milling machines known as Unimill, with column spans of up to 10,000 mm and table widths of up to 9,000 mm.
A range of multifunction turning, milling and grinding spindles
TLDR: In addition to the main turning spindle, Pietro Carnaghi vertical lathes can be fitted with universal heads, high-speed heads and grinding spindles (up to 3,000 rpm) held in an accessory magazine, covering a wide range of operations.
Thanks to the many accessories and configurations available, Pietro Carnaghi machines can carry out integrated operations on the workpiece: turning, milling, drilling and grinding, complemented by automatic part measurement. The high spindle rotation speed (up to 3,000 rpm) and its extremely precise balancing allow grinding operations to be performed to a high degree of finish, using grinding spindles held in the accessory magazine — suitable grinding motor spindles are also available to reach higher rotation speeds. Universal heads and high-speed heads, along with controlled-axis boring heads, complete the range of interchangeable tooling specific to these multitasking machines.
Pietro Carnaghi spindles covered (non-exhaustive list)
- Main turning spindles of vertical lathes, ATF, ATT, AC Mono and twin-column AC series
- Interchangeable universal heads and high-speed heads
- Grinding spindles, up to 3,000 rpm, accessory magazine
- Controlled-axis boring heads
- Mobile-gantry milling machine spindles, Unimill range
Interfaces and specifications
The Pietro Carnaghi spindles we repair cover tables from 800 to 10,000 mm depending on the series (ATF, ATT, AC), with spindle rotation speeds of up to 60 to 6,000 rpm depending on the configuration, and associated grinding spindles up to 3,000 rpm — specifications to be confirmed on quotation according to the exact reference of your machine.
Our expertise on your Pietro Carnaghi spindles
TLDR: Brochexpress works across the entire life cycle of your Pietro Carnaghi spindles, with the same rigour as for the other brands in our portfolio.
On-site customer service
- Diagnosis and intervention directly on your machine, in the production workshop, to limit downtime caused by removing and transporting a large spindle
Full diagnostics
- Inspection of clearances, balancing, bearing condition, sealing and hydrostatic guideway systems, with a detailed technical report
Preventive and corrective maintenance
- A maintenance programme tailored to the heavy-duty machining pace typical of large vertical lathes, as well as corrective interventions in the event of a breakdown
Overhaul and refurbishment
- Grinding, bearing replacement, seal refurbishment and rotation testing in the workshop, restoring the manufacturer's original tolerances
Why choose Brochexpress for your Pietro Carnaghi spindles
- An independent workshop, with no capital ties to manufacturers, guaranteeing an objective diagnosis
- Expertise in multifunction turning-milling-grinding spindles and hydrostatic guideway systems
- Two service sites: Beaurepaire (France) and Lussery-Villars (Switzerland)
- Support from the first intervention through to the return to production
Lead times and warranty
- On-site service within 48h
- Workshop repair: around 20 working days depending on parts availability
- 12-month warranty on all our repairs
Frequently asked questions
Do you repair the grinding spindles held in the accessory magazine of vertical lathes?
Yes, we work on these spindles, taking into account their specific high-speed balancing requirements.
Do you work on the interchangeable universal heads and high-speed heads?
Yes, we diagnose and repair these heads, regardless of the machine configuration.
What is the average lead time for a complete overhaul?
Allow around 20 working days in the workshop, depending on the condition of the spindle and the availability of parts specific to these precision technologies.
Do you intervene directly on site for very large spindles (tables up to 10,000 mm)?
Yes, our team travels on site to diagnose and, whenever possible, intervene directly, avoiding the full removal of large, heavy spindles.
Do you offer a preventive maintenance contract for a fleet of Pietro Carnaghi machines?
Yes, we draw up preventive maintenance programmes tailored to your production pace and the criticality of your machines.
A reliable partner for your industrial performance
Whether it is an emergency on-site intervention, a full workshop overhaul or a preventive maintenance programme, Brochexpress brings its expertise to your production. As an independent workshop, we work across the entire Pietro Carnaghi range — vertical lathe spindles and large mobile-gantry milling machines — with the responsiveness and rigour demanded by the most exacting industrial environments.
Our teams are at your disposal from our sites in Beaurepaire (France) and Lussery-Villars (Switzerland) for a study of your needs, a diagnosis or a personalised quotation.
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Pietro Carnaghi® is a registered trademark of Pietro Carnaghi S.p.A. Brochexpress is neither affiliated with, nor a partner of, nor an authorised distributor of Pietro Carnaghi S.p.A. Our business covers independent repair and maintenance of industrial equipment, permitted under the principle of referential trademark use (EU Trademark Directive 2015/2436 / French Intellectual Property Code, art. L.713-6).