Somab spindle and motorized spindle repair
Brochexpress is an independent workshop specialising in the repair, maintenance and diagnostics of Somab spindles and motorized spindles — a French manufacturer of precision lathes and multitasking centres, recognised for its granitan frames and its large-capacity lathes.
Somab, French manufacturer of precision lathes and multitasking centres
TLDR: Somab (Société de Mécanique et d'Automatisme du Bourbonnais, Moulins, France) designs universal lathes, teach-in lathes and turning-milling multitasking centres, with ranges covering precision (Optimab), batch production (Deltamab) and large dimensions (Maximab).
Based in Moulins in the Allier department, Somab is a French manufacturer of lathes, milling machines and multitasking machines recognised for the quality of its machine structures. The Optimab range, in granitan, targets universal precision turning with a significant reduction in vibration and low sensitivity to temperature variation. The Deltamab range, also with a granitan structure, is dedicated to batch and multi-axis part machining, with configurations of up to 8 axes including a sub-spindle and a Y axis. The Maximab range, with a flat cast-iron bed, is intended for machining large and precise parts, with between-centres configurations of up to 25,000 mm. The manufacturer also offers turning-milling multitasking centres (Genymab) for advanced 5-axis machining.
A range of super-precision cartridge spindles and compact milling spindles
TLDR: Somab Optimab range lathes feature a cartridge spindle with super-precision angular contact ball bearings, greased for life, while Genymab multitasking centres combine a compact milling spindle with a fixed holder for turning operations.
Somab Optimab range universal lathes (350, 450) feature a cartridge spindle with super-precision angular contact ball bearings, greased for life, mounted on a 60° slant bed in granitan with attached prismatic slideways. On Genymab multitasking centres, a compact milling spindle (typical dimensions 367 x 200 x 134 mm) is combined with a fixed non-rotating holder for turning tools, guaranteeing high rigidity for advanced machining: gear cutting, form milling, hobbed gear milling, 5-axis machining, plunge milling and cycloidal milling. On Maximab range large-dimension lathes, the axes are driven by brushless motors and high-precision ball screws, with ground hardened cast-iron slideways for machining very large between-centres parts.
Somab spindles covered (non-exhaustive list)
- Cartridge spindles with angular contact ball bearings, Optimab range
- Compact milling spindles of multitasking centres, Genymab range
- Multi-axis teach-in lathe spindles, Deltamab range
- Large-dimension lathe spindles, Maximab range (between centres up to 25,000 mm)
- Sub-spindles and secondary spindles on multi-axis configurations
Interfaces and specifications
The Somab spindles we repair cover a wide range of applications depending on the series: super-precision cartridge spindles on Optimab lathes, compact milling spindles on Genymab centres, and large-dimension lathe spindles on the Maximab range — precise specifications to be confirmed on quotation according to the exact reference of your machine.
Our expertise on your Somab spindles
TLDR: Brochexpress works across the entire life cycle of your Somab 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 manufacturing line
Full diagnostics
- Inspection of clearances, balancing, angular contact bearing condition, sealing and sub-spindle systems, with a detailed technical report
Preventive and corrective maintenance
- Maintenance programme tailored to the production rates of precision turning and heavy mechanical engineering, 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 Somab spindles
- An independent workshop, with no capital ties to manufacturers, guaranteeing an objective diagnosis
- Expertise in super-precision cartridge spindles and compact milling spindles
- 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 the super-precision cartridge spindles of Optimab lathes?
Yes, we work on these spindles, taking into account their angular contact ball bearings greased for life.
Do you work on the compact milling spindles of Genymab multitasking centres?
Yes, we diagnose and repair these spindles, together with their fixed holder for turning.
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 the spindles of Maximab range large-dimension lathes (up to 25 metres between centres)?
Yes, we diagnose and repair these spindles, sized for machining massive parts.
Do you offer a preventive maintenance contract for a fleet of Somab 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 Somab spindles and motorized spindles — precision lathes and multitasking centres — 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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Somab® is a registered trademark of the Société de Mécanique et d'Automatisme du Bourbonnais. Brochexpress is neither affiliated with, nor a partner of, nor an authorised distributor of Somab. 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).