Zollern spindle and motor spindle repair
Brochexpress is an independent workshop specialising in the repair, maintenance and diagnostics of Zollern spindles and motor spindles — the German manufacturer from Herbertingen, a reference in very high precision hydrostatic spindles for grinding, turning, milling and metrology machines.
Zollern, German specialist in wear-free hydrostatic spindles
TLDR: ZOLLERN, notably at its Herbertingen site in Germany where gearboxes, direct electric drives, hydrostatic bearings, hydrostatic spindles and guideways, rotary tables and automation systems are developed, offers hydrostatic spindles for tools or workpieces intended for grinding, turning, milling and metrology machines, with a dedicated service centre for maintenance and repair.
Zollern develops and produces at its Herbertingen site gearboxes, direct electric drives, hydrostatic bearings, hydrostatic spindles and guideways, rotary tables and systems for automation tasks, with an adjacent service centre dedicated to maintenance and repairs. Zollern hydrostatic spindles are characterised by very high concentricity, checked using a high-resolution Lion measuring system guaranteeing concentricity below 0.2 micron. These spindles are used in grinding machines, turning machines, milling machines and measuring machines, wherever freedom from wear, a high level of accuracy and very smooth running are required.
A range of hydrostatic spindles with patented gap restrictor, up to 5,000 rpm
TLDR: Zollern hydrostatic spindles rely on a principle of constant separation of the bearing surfaces by a thin oil film, guaranteeing freedom from wear and an unlimited calculated service life, with a patented bearing clearance compensator that works without capillaries or sensitive controllers.
Zollern hydrostatic spindles rely on the constant separation of bearing surfaces by a thin oil film, guaranteeing freedom from wear and therefore an unlimited calculated service life, with the heat generated dissipated directly by the oil through its constant circulation — a characteristic that ensures high thermal stability. The operating gap restrictor patented by Zollern is a self-regulating system with fast control behaviour and high stiffness, integrated into the spindle's fully hydrostatic bearing, with optimal pocket pressure automatically set within manufacturing tolerances; this system equips Zollern spindles as well as hydrostatic rotary tables and linear guideways. On common configurations, a 100 mm bearing diameter is paired with a rotation speed of 5,000 rpm, with dimensions customisable to customer needs. The associated hydrostatic rotary tables offer concentricity and axial runout accuracy below 0.5 micron, with no stick-slip effect at low speed.
Zollern spindles and motor spindles covered (non-exhaustive list)
- Hydrostatic spindles for grinding machines, concentricity accuracy < 0.2 µm
- Hydrostatic spindles for turning, milling and metrology machines
- Spindles fitted with the patented operating gap restrictor
- Associated hydrostatic rotary tables, concentricity < 0.5 µm
- Hydrostatic guideways and bearings of machine tools of every brand
Interfaces and specifications
The Zollern spindles and motor spindles we repair offer concentricity below 0.2 micron, with bearing diameters and rotation speeds sized to order (a common example: 100 mm at 5,000 rpm) — exact specifications to be confirmed on quotation according to the reference of your spindle.
Our expertise on your Zollern spindles and motor spindles
TLDR: Brochexpress works across the entire life cycle of your Zollern spindles and motor spindles, with the same rigour as for the other brands in our portfolio.
On-site customer service
- Diagnostics and service directly on your machine, in your production workshop, to limit downtime on very high precision equipment
Full diagnostics
- Inspection of the hydrostatic system, the operating gap restrictor and spindle concentricity, with a detailed technical report
Preventive and corrective maintenance
- Maintenance programme tailored to the extreme accuracy demands of grinding and metrology, together with corrective action in the event of a breakdown
Overhaul and refurbishment
- Overhaul of the hydrostatic system, concentricity inspection and restoration of the manufacturer's original tolerances
Why choose Brochexpress for your Zollern spindles
- An independent workshop, with no capital ties to manufacturers, guaranteeing an objective diagnosis
- Expertise in hydrostatic spindles and patented gap restrictor systems
- Two service sites: Beaurepaire (France) and Lussery-Villars (Switzerland)
- Support from the first intervention through to return to production
Turnaround and warranty
What we commit to on the Zollern spindles we take in:
- 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 Zollern hydrostatic spindles (concentricity < 0.2 µm)?
Yes, we work on these spindles, taking account of their patented gap restrictor system.
Do you work on the hydrostatic rotary tables associated with Zollern spindles?
Yes, we diagnose and repair these systems, preserving their concentricity and axial runout accuracy.
How long does a full overhaul take?
Allow around 20 working days in the workshop, depending on the condition of the spindle and the availability of parts specific to this hydrostatic technology.
Do you work on Zollern spindles built into precision measuring machines?
Yes, we diagnose and repair these spindles, whatever the application (grinding, turning, milling, metrology).
Do you offer a preventive maintenance contract for a fleet of Zollern equipment?
Yes, we set up preventive maintenance programmes tailored to the criticality of this very high precision equipment.
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 all Zollern spindles and motor spindles — very high precision hydrostatic spindles — 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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Zollern® is a registered trademark of the ZOLLERN group. Brochexpress is neither affiliated with, nor a partner of, nor an authorised distributor of the ZOLLERN group. 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).