Strausak spindle and motor spindle repair
Brochexpress is an independent workshop specialising in the repair, maintenance and diagnostics of Strausak spindles and motor spindles — the Swiss manufacturer founded in 1923, a historic specialist in precision tool grinding, today part of the Rollomatic group.
Strausak, over a century of Swiss expertise in precision tool grinding
TLDR: Founded in 1923 as a repair workshop for the local watchmaking industry, Strausak diversified early on into high-precision machine tool construction, before specialising in CNC tool grinding (Fleximat, then U-Grind) and joining the Rollomatic Holding SA group.
Founded in 1923 as a repair workshop for the local watchmaking industry, Strausak diversified very early to offset the cyclical swings of that sector, developing automated machines over the decades, a universal tool grinder licence, then its own numerically controlled machines. The Fleximat grinding centre, forerunner of today's machines, built the manufacturer's reputation before giving way to the flexible U-Grind grinding centre, launched in 2012 — the year Strausak joined ROLLOMATIC HOLDING SA. The collaboration between Strausak and NUM on CNC controls is part of a long tradition, going back to the installation of the first NUM unit on a Strausak machine. After selling its watchmaking division, Strausak was able to focus exclusively on precision tool grinding, with applications spanning automotive, watchmaking, toolmaking, aerospace and medical.
A range of 5-axis grinding spindles, ISO 50 taper, up to 9,000 rpm
TLDR: Strausak CNC tool grinders, such as the Fleximat model, use an ISO 50 taper grinding spindle running from 1,000 to 9,000 rpm, with a direct drive B axis offering 0.001° resolution and a workpiece spindle reaching up to 1,000 rpm.
On the Fleximat grinder, the grinding spindle runs from 1,000 to 9,000 rpm (via a variable speed drive), with a 6 to 8 kW spindle motor and a 3.7 kW wheel motor, in ISO 50 taper, for a maximum wheel diameter of 160 mm. The machine's 5-axis architecture comprises a B axis with 470° of travel and 0.001° resolution, a C axis with the same resolution, and a workpiece spindle reaching up to 1,000 rpm. On the flexible U-Grind grinding centre, all 5 axes use direct drives, delivering high flexibility and cost-effectiveness, with quick and simple setup and changeover for particularly economical production — the machine suiting both resharpening and small batch production to very high precision.
Strausak spindles and motor spindles covered (non-exhaustive list)
- ISO 50 taper grinding spindles, 1,000 to 9,000 rpm, Fleximat series
- Direct drive workpiece spindles, up to 1,000 rpm
- Direct drive B/C axis spindles, 0.001° resolution, U-Grind series
- Spindles of historic tool grinders (124 series, 81 series ceramic grinder)
- Spindles of polishing machines and precision instruments
Interfaces and specifications
The Strausak spindles and motor spindles we repair come in ISO 50 taper, with rotation speeds from 1,000 to 9,000 rpm depending on the configuration — exact specifications to be confirmed on quotation according to the reference of your machine.
Our expertise on your Strausak spindles and motor spindles
TLDR: Brochexpress works across the entire life cycle of your Strausak 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 precision equipment
Full diagnostics
- Inspection of clearances, balancing, bearing condition and direct drive axes, with a detailed technical report
Preventive and corrective maintenance
- Maintenance programme tailored to the accuracy demands of tool grinding, together with corrective action in the event of a breakdown
Overhaul and refurbishment
- Grinding, bearing replacement, sealing refurbishment and rotation testing in the workshop, restoring the manufacturer's original tolerances
Why choose Brochexpress for your Strausak spindles
- An independent workshop, with no capital ties to manufacturers, guaranteeing an objective diagnosis
- Expertise in ISO 50 grinding spindles and direct drive axes
- 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 Strausak 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 Strausak ISO 50 taper grinding spindles (Fleximat series)?
Yes, we work on these spindles, whatever the configured rotation speed.
Do you work on the direct drive spindles of U-Grind machines?
Yes, we diagnose and repair these spindles, preserving their 0.001° positioning resolution.
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 (bearings, seals, specific components).
Do you work on historic Strausak tool grinders (124 series) still in production?
Yes, we diagnose and repair the spindles whatever the age of the machine.
Do you offer a preventive maintenance contract for a fleet of Strausak machines?
Yes, we set up preventive maintenance programmes tailored to the criticality of this 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 Strausak spindles and motor spindles — spindles of high-precision CNC tool grinders — with the responsiveness and rigour demanded by the most exacting industrial environments: automotive, watchmaking, toolmaking, aerospace and medical.
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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Strausak® is a registered trademark, today part of the Rollomatic Holding SA group. Brochexpress is neither affiliated with, nor a partner of, nor an authorised distributor of the Rollomatic 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).