Lorenz spindle and motor spindle repair
Brochexpress is an independent workshop specialising in the repair, maintenance and diagnostics of Lorenz spindles and motor spindles — the historic German builder of gear shaping machines, today part of the Liebherr group.
Lorenz, the German benchmark in gear shaping
TLDR: Lorenz is a historic German manufacturer whose name remains tied to the gear shaping process, a generating method particularly suited to parts where limited tool clearance makes hobbing impossible — internal gear teeth above all.
Lorenz gear shaping machines, such as the LS series, are fitted with electronically controlled helical guidance, avoiding both the cost of acquiring various mechanical guides and the time needed to change them when moving from straight to helical teeth. In gear shaping, the generating motion relies on the meshing of the tool-equivalent gear with the workpiece, with the rotations of tool and workpiece conjugated in direction and angular speed ratio. The process is particularly well suited to internal gear teeth, where a hob simply cannot be brought out of the cut.
A range of Morse-taper shaper cutter spindles for generating by shaping
TLDR: Lorenz shaping machines use a Morse-taper shaper cutter spindle (MK4 or MK5), with stroke rates reaching several hundred strokes per minute, for gear diameters from 200 to 630 mm depending on the model.
Lorenz LS series shaping machines use a shaper cutter spindle housed in a Morse taper (MK4 on compact models, MK5 on higher-capacity models), with stroke rates of 75 to 1,000 strokes per minute depending on the model and the mode (roughing or finishing). Gear diameters handled range from 200 mm on compact models (LS 200) up to 630 mm on high-capacity models, for modules up to 8, with drive ratings of the order of 8 to 25 kW depending on machine size. A tilting table, available as an option on certain models, extends the range of applications.
Lorenz spindles covered (non-exhaustive list)
- Shaper cutter spindles in MK4/MK5 Morse taper
- Spindles working with electronically controlled helical guidance
- Spindles of compact shaping machines, LS 200 series
- Spindles of high-capacity shaping machines, LS 400/S800 series
- Spindles of tilting tables for specific applications
Interfaces and specifications
The Lorenz spindles we repair come in MK4 and MK5 tapers, with gear diameters from 200 to 630 mm depending on the model and stroke rates reaching 1,000 strokes/min — exact specifications to be confirmed on quotation according to the reference of your machine.
Our expertise on your Lorenz spindles and motor spindles
TLDR: Brochexpress works across the entire life cycle of your Lorenz 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 your gear cutting line
Full diagnostics
- Inspection of clearances, balancing, bearing condition, sealing and the electronically controlled helical guidance, with a detailed technical report
Preventive and corrective maintenance
- Maintenance programme tailored to the precision requirements of gear shaping, 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 Lorenz spindles and motor spindles
- An independent workshop, with no capital ties to manufacturers, guaranteeing an objective diagnosis
- Expertise in MK4/MK5 shaper cutter spindles and electronic helical guidance
- Two service sites: Beaurepaire (France) and Lussery-Villars (Switzerland)
- Support from the first intervention through to return to production
Turnaround 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 shaper cutter spindles in MK4/MK5 Morse taper?
Yes, we work on these spindles, whatever the configured stroke rate.
Do you work on historic Lorenz shaping machines (LS 200, LS 400) still in production?
Yes, we diagnose and repair the spindles whatever the age of the machine.
What is the average lead time for a full overhaul?
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 spindles dedicated to cutting internal gear teeth?
Yes, we diagnose and repair these spindles, suited to limited tool clearance.
Do you offer a preventive maintenance contract for a fleet of Lorenz machines?
Yes, we draw up preventive maintenance programmes tailored to your production pace.
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 Lorenz spindles and motor spindles — gear shaping 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.
Request a quoteRelated services
Lorenz® is a registered trademark, today part of the Liebherr group. Brochexpress is neither affiliated with, nor a partner of, nor an authorised distributor of the Liebherr 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).