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Andres AG – Fertigung

CNC precision turned parts from Ø 1–25 mm for medtech, electronics and precision mechanics – manufactured in Switzerland.

Andres AG Logo

Andres AG Präzisionsdrehteile

Lohn-Ammannsegg (SO), SwitzerlandNew on Amplifa

1956Founded (70th anniversary in 2026)
30Sliding-headstock lathes
Ø 1–25 mmBar stock, up to 3 m in length
±0,001 mmTolerance (Tornos SwissNano)

About Andres AG

Andres AG is a Swiss precision turning shop based in Lohn-Ammannsegg (SO), specialised in sliding-headstock turning of ready-to-install CNC turned parts made of metal and plastic. Bar stock with diameters from 1 to 25 mm and lengths up to 3 m is machined; with a fleet of 30 CNC sliding-headstock lathes from Citizen and Tornos, tolerances down to ±0.001 mm are achieved. Production ranges from the prototype phase to series production, among other things in accordance with GMP and GDP guidelines for medical technology. Materials include titanium, implant steel, stainless steel, brass, copper (CuPb1P), steel and plastics. Customer industries include medical technology, electronics/connection technology, optics, fibre optics, hydraulics, apparatus engineering, measurement and control technology, fluidics and special batteries. The company is certified to ISO 9001:2015 and ISO 13485:2016 and supplies customers worldwide with a focus on Switzerland and Western Europe.

Site
Lohn-Ammannsegg
Processes
Sliding-headstock turning of precision turned parts (CNC), Sliding-headstock turning with guide bushing, high-speed spindle (Citizen L12), Fixed-headstock turning / sliding and fixed-headstock turning (Citizen D25), Turning of the smallest parts with tolerances ±0.001 mm (Tornos SwissNano), NC-controlled turning, Prototype and series production of customised precision turned parts, Design-for-manufacturing consulting / optimisation, Optical and tactile measurement / first-article inspection / SPC documentation
Materials
Titanium, Implant steel, Stainless steel, Brass, CuPb1P, Plastic, Steel (bar stock), CuPb1P (copper)
Certificates
ISO 9001:2015, ISO 13485:2016, GMP / GDP, ISO 14001
Founded
1956
Industries
Medical technology, Electronics / connection technology, Optics, Fibre optics, Hydraulics, Apparatus engineering
  1. 01

    Design-for-manufacturing consulting

  2. 02

    CNC sliding-headstock turning / fixed-headstock turning

  3. 03

    Post-treatment (magnetic mass finishing, ultrasonic cleaning)

  4. 04

    Quality assurance and SPC documentation

  5. 05

    Logistics / delivery of ready-to-install parts

Materials and Processes

Ti

Titanium

For medical technology parts such as implant bone screws.

Implant-Stahl

Implant steel

Key material for turned parts in medical technology.

V2A

Stainless steel

Corrosion-resistant bar stock for precision turned parts.

CuZn

Brass

Among other things for threaded pins with attached stamped parts.

CuPb1P

CuPb1P (copper)

Machinable copper material, e.g. for parts in special batteries.

St

Steel

Bar stock for a wide variety of precision turned parts.

K

Plastic

Sliding-headstock turning of precision parts made of engineering plastics.

Locations

Standort Lohn-Ammannsegg

Lohn-Ammannsegg

CH

Headquarters / production (precision turning shop)

Part weight / size
Turned parts Ø 1–25 mm, bar lengths up to 3 m
Lot size
Prototypes to series production
Materials
Titanium, implant steel, stainless steel, brass, copper, steel, plastic
  • 30 sliding-headstock lathes (Citizen, Tornos)
  • Citizen L12 VII/X
  • Citizen D25 1M8-LFV
  • Tornos SwissNano 4/6
  • Tornos SwissNano 7/6
  • Tornos EvoDeco 10
  • Tornos EvoDeco 16
  • Tornos Delta 12/5
  • Tornos DECO 2000/13a
  • Tornos DECO 2000/10a
  • Air-conditioned measuring room
  • Own wastewater treatment plant
  • Photovoltaic system

Components and References

Implant bone screws
Implant bone screwsSliding-headstock turning · Medical technology
T24 bone screw
T24 bone screwCNC turning · Medical technology

Inside the production

Citizen L12 sliding-headstock lathe
Citizen L12 sliding-headstock lathe
Citizen D25 sliding- and fixed-headstock lathe
Citizen D25 sliding- and fixed-headstock lathe
Tornos SwissNano
Tornos SwissNano
Tornos EvoDeco 10
Tornos EvoDeco 10
Tornos EvoDeco 16
Tornos EvoDeco 16
Tornos Delta
Tornos Delta
Machine fleet Tornos DECO 2000/13a
Machine fleet Tornos DECO 2000/13a
Machine fleet Tornos DECO 2000/10a
Machine fleet Tornos DECO 2000/10a
Quality assurance with optical metrology
Quality assurance with optical metrology

Industries

Medical technologyElectronics / connection technologyOpticsFibre opticsHydraulicsApparatus engineeringMeasurement and control technologyFluidicsSpecial batteriesMedical technology/MedtechElectronics/Connection technology

Processes & technical limits

ProcessesToleranceMax. partWeightLot sizeMaterials
Sliding-headstock turning of precision turned parts (CNC)Machining–3 m (bar stock) × Ø 25 mm––Titanium, Implant steel, Stainless steel, Metal, Plastic, Brass, CuPb1P
Sliding-headstock turning with guide bushing, high-speed spindle (Citizen L12)Machining–small diameters (Ø 12 mm)––Metal, Plastic
Fixed-headstock turning / sliding and fixed-headstock turning (Citizen D25)Machining–Ø 25 mm––Metal
Turning of the smallest parts with tolerances ±0.001 mm (Tornos SwissNano)Machining±0,001 mm28 mm (Ø4) / 50 mm (Ø7) × Ø 4–7 mm––Metal
NC-controlled turningMachining–––––
Prototype and series production of customised precision turned partsMachining–––Prototype phase – Series productionMetal, Plastic
Design-for-manufacturing consulting / optimisationEngineering–––––
Optical and tactile measurement / first-article inspection / SPC documentationInspection–––––
Magnetic mass finishingSurface treatment––––CuPb1P
Ultrasonic cleaningSurface treatment––––CuPb1P

10 Anlagen & Maschinen

MachineManufacturer / modelQuantityWorking areaYear builtSite
Sliding-headstock latheCitizen L12 VII / X–small diameters, with/without guide bushing, 15,000 rpm–Lohn-Ammannsegg
Sliding- and fixed-headstock latheCitizen D25 1M8-LFV–––Lohn-Ammannsegg
Sliding-headstock latheTornos SwissNano 4/6–Ø 4x28 mm, tolerances ±0.001 mm–Lohn-Ammannsegg
Sliding-headstock latheTornos SwissNano 7/6–Ø 7x50 mm, 2.5 kW spindle power–Lohn-Ammannsegg
Turning machineTornos EvoDeco 10–––Lohn-Ammannsegg
Turning machineTornos EvoDeco 16–––Lohn-Ammannsegg
Sliding-headstock latheTornos Delta 12/5–Outer diameters up to 12 mm–Lohn-Ammannsegg
Sliding-headstock latheTornos DECO 2000/13a–Bar passage up to 16 mm–Lohn-Ammannsegg
Sliding-headstock latheTornos DECO 2000/10a–up to Ø 10 mm–Lohn-Ammannsegg
Sliding-headstock lathes (total)–30Bar stock 1–25 mm Ø, 3 m length–Lohn-Ammannsegg

Additional services

Sliding-headstock turning of precision turned parts made of metal and plastic (bar stock 1–25 mmManufacturing in accordance with GMP and GDPConsulting on design for manufacturing and optimisation during the development phasePost-treatments (e.g. magnetic mass finishing, ultrasonic cleaning)Logistics/delivery of ready-to-install partsQuality assurance with SPC documentation, first-article inspection, first sample inspection report,Prototypes to series productionProcess validation, measurement method validation and inspection planning

Reference customers

ITT Cannon GmbH, WeinstadtAlcon Grieshaber AG, SchaffhausenSonova AG (Phonak), StäfaMedartis AG, BaselWyon AGBiomech Innovations AG, NidauTeltronic AG

Quality Assurance

Inspection is carried out in an air-conditioned measuring room using optical and tactile measuring devices as well as the SPC network for statistical process control; all measuring equipment is calibrated regularly. Standard inspection steps are first-article inspection, first sample inspection report, production inspection and final inspection, on request with full SPC documentation.

EvidenceLohn-Ammannsegg
ISO 9001:2015
ISO 13485:2016
GMP / GDP
ISO 14001

Company History

  1. 1956

    Foundation of the company (derived from the 70th anniversary in 2026).

  2. 2026

    70th company anniversary, celebrated with a three-day trip to Lyon.

  3. 2026

    Certification of the environmental management system to ISO 14001 planned.

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