CNC turned and milled parts as well as prototypes and small batches of up to 500 pieces made from all machinable materials.
Lorenzen Dreh- und Frästechnik GmbH
Bad Neuenahr-Ahrweiler (DE)New on Amplifa
About Lorenzen Dreh- und Frästechnik
Lorenzen Dreh- und Frästechnik GmbH is a custom manufacturer of precision parts and CNC components based in Bad Neuenahr-Ahrweiler in the Ahr valley. Founded in 1957 by Heinz Lorenzen and taken over in 2021 by long-standing employees Thomas Bertram and Sascha Harbarth, the company produces workpieces to drawing, sample or CAD model – from one-off pieces and prototypes to small batches of typically up to 500 pieces. Machining is performed on predominantly CNC-controlled machines with a precision of 5 µm; materials include stainless steel, aluminium and silicon alloys, bronze, copper and plastics. The value chain includes band sawing, conventional turning and milling, the digitisation of samples by scanning, and surface treatments such as hardening, tempering, galvanising, bluing and chrome plating in cooperation with partners. Delivery is carried out with the company's own fleet within a 120 km radius; the company operates according to DIN EN ISO 9001:2015 (certified by SGS).
- Site
- Bad Neuenahr-Ahrweiler
- Processes
- CNC turning, CNC milling, Manufacture of prototypes and small batches, Custom fabrications to drawing, sample or CAD model, Further processing: surface treatments (hardening, tempering) and surface finishing, Technical consulting, costing and production from a single source, Digitisation of samples by scanning, Custom fabrications to drawing/sample/CAD
- Materials
- Bronze, Copper, Plastics, Stainless steel, Aluminium alloys, Silicon alloys
- Certificates
- ISO 9001:2015, ISO 9001
- Founded
- 1957
- Industries
- Various industries (general, not specified), various industries (general, not specified)
- 01
Technical consulting and costing
- 02
Digitisation of samples by scanning
- 03
Band sawing of raw material
- 04
CNC turning
- 05
CNC milling
- 06
Conventional turning and milling
- 07
Further processing (hardening, tempering, galvanising, bluing, chrome plating)
- 08
Quality control
- 09
Own delivery within a 120 km radius
Materials and Processes
Stainless steel
Stainless steel for precise CNC-manufactured components to drawing.
Aluminium alloys
Lightweight aluminium alloys for machined components in various dimensions.
Copper
Machinable copper for custom workpieces.
Bronze
Bronze for sliding and wear components in small-batch production.
Silicon alloys
Silicon alloys complement the range of machinable materials.
Plastics
Plastics for milled and turned parts; the certified scope of activity includes the machining of plastics.
Site
Bad Neuenahr-Ahrweiler
DEProduction and administration
- Part weight / size
- up to ⌀ 600 × 2000 mm
- Lot size
- one-off pieces up to 500 pieces
- Materials
- stainless steel, aluminium and silicon alloys, bronze, copper, plastics
- CNC lathe (up to ⌀ 300 × 600 mm)
- Cycle-controlled CNC machine (⌀ 600 × 2000 mm)
- CNC machining centre 880 × 630 × 630 mm with rotary table
- Conventional lathe (350 mm centre height, 1500 mm turning length)
- Automatic band sawing machine (up to ⌀ 400 mm)
- Conventional tool milling machine
- Drilling machines
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CNC turningMachining | 5 µm | 600 mm × ⌀ 300 mm | – | 500 pieces | all machinable materials, bronze, copper, plastics, stainless steel, aluminium alloys, silicon alloys |
| CNC millingMachining | 5 µm | – | – | 500 pieces | all machinable materials, bronze, copper, plastics, stainless steel, aluminium alloys, silicon alloys |
| Manufacture of prototypes and small batchesMachining | 5 µm | – | – | 500 pieces | all machinable materials |
| Custom fabrications to drawing, sample or CAD modelEngineering | – | – | – | – | – |
| Further processing: surface treatments (hardening, tempering) and surface finishingSurface | – | – | – | – | – |
| Technical consulting, costing and production from a single sourceEngineering | – | – | – | – | – |
| Digitisation of samples by scanningEngineering | – | – | – | – | – |
7 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC lathe | – | 1 | up to ⌀ 300x600 mm | – | Bad Neuenahr-Ahrweiler |
| Cycle-controlled CNC machine | – | 1 | ⌀ 600x2000 mm | – | Bad Neuenahr-Ahrweiler |
| CNC machining centre | – | 1 | 880x630x630 mm, integrated rotary table, programmable working spindle horizontal/vertical | – | Bad Neuenahr-Ahrweiler |
| Conventional lathe | – | 1 | up to 350 mm centre height and 1500 mm turning length | – | Bad Neuenahr-Ahrweiler |
| Automatic band sawing machine | – | 1 | up to ⌀ 400 mm | – | Bad Neuenahr-Ahrweiler |
| Conventional tool milling machine | – | – | – | – | Bad Neuenahr-Ahrweiler |
| Drilling machines | – | – | – | – | Bad Neuenahr-Ahrweiler |
Additional services
Quality
Qualified staff, predominantly CNC-controlled production machines and strict controls during production as well as state-of-the-art measuring equipment ensure manufacturing to drawing with 5 µm precision. The company is certified to ISO 9001:2015 by SGS.
| Evidence | Bad Neuenahr-Ahrweiler |
|---|---|
| ISO 9001 |
History
- 1957
Company founded by Heinz Lorenzen in Bad Neuenahr-Ahrweiler.
- 2017
Initial certification of the quality management system to ISO 9001 by SGS on 27.12.2017.
- 2021
Takeover by long-standing employees Thomas Bertram and Sascha Hubert Harbarth; founding of Lorenzen Dreh- und Frästechnik GmbH.
- 2023
Reconstruction after the flood disaster in the Ahr valley; ISO 9001:2015 certification by SGS since 17.02.2023.