Swiss elevator manufacturer: passenger elevators, freight elevators up to 7 t and car elevators including control technology from in-house production.
Diethelm Aufzüge AG
Lachen SZ · Wangen SZ · Vorderthal SZNew on Amplifa
About us
Diethelm Aufzüge AG was founded in 1990 by Hansruedi Diethelm in Vorderthal and is an owner-managed family company headquartered in Lachen SZ. As a Swiss elevator manufacturer, the company with more than 100 employees manufactures and installs passenger elevators, freight elevators up to 7 tonnes payload as well as car elevators, covering the entire value chain: design, development, metal fabrication, control system assembly, pre-assembly, installation and service. Sheet metal working takes place in Lachen SZ, among other things by laser cutting (Trumpf and Bystronic), an automated sheet metal warehouse, bending robotics and a nitrogen generator; the company's own elevator controls (DI06) and car elevators are produced at the Wangen SZ site. Customers are private and public building owners throughout Switzerland. In addition, the company offers service and maintenance for third-party brands with a large spare parts warehouse, express shipping and a 24h emergency service. Aligned elevators operate up to eight times more energy-efficiently; the company uses renewable energies, a solar roof and an electric fleet.
- Site
- Lachen SZ
- Processes
- Laser cutting, Laser Automation (Bystronic), Bending (bending robots), Sheet metal warehouse / sheet metal working, Control system assembly (in-house elevator control DI06, circuit board production), Elevator manufacturing (passenger elevator, freight elevator, car elevator up to 7 t), Installation of elevator systems, Pre-assembly
- Materials
- Brushed stainless steel sheet, Sheet steel, Plastic (floor covering), Synthetic resin panels, In-house elevator control system, Laser cutting (Trumpf, Bystronic), Bending robots (Bystronic)
- Certificates
- swiss made production
- Founded
- 1990
- Employees
- 100
- Industries
- Elevator construction, Passenger elevators, Freight elevators, Car elevators, Building technology
- 01
Design and development
- 02
Sheet metal warehouse and laser cutting
- 03
Bending (bending robots)
- 04
Control system assembly (DI06)
- 05
Pre-assembly
- 06
On-site installation at the customer
- 07
Service and maintenance
Materials & Processes
Sheet steel
Used for shaft parts, entrance fronts and elevator cab constructions.
Brushed stainless steel sheet
Used for skirting boards, ceilings, handrails and entrance fronts in cab interiors.
Synthetic resin panels
Used for cladding the cab side walls.
In-house elevator control system
In-house circuit board production with higher stability and configurability since 2017.
Laser cutting (Trumpf, Bystronic)
High-quality cutting of steel and stainless steel sheets, established since 2009.
Bending robots (Bystronic)
Automated sheet metal bending since 2024, with tool changers since 2025.
Locations
Lachen SZ
CHHeadquarters and production plant
- Materials
- Sheet steel, stainless steel sheet
- Trumpf laser cutting machine
- Bystronic laser cutting machine
- Bystronic bending robot
- Automated sheet metal warehouse
- Nitrogen generator
Wangen SZ
CHProduction of in-house elevator controls and car elevators
- Control system assembly
Vorderthal SZ
CHManufacturing site (since 1999)
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Laser cuttingMachining | – | – | – | – | Sheet steel, Stainless steel |
| Laser Automation (Bystronic)Machining | – | – | – | – | – |
| Bending (bending robots)Forming | – | – | – | – | Sheet metal |
| Sheet metal warehouse / sheet metal workingForming | – | – | – | – | Sheet steel, Stainless steel sheet |
| Control system assembly (in-house elevator control DI06, circuit board production)Assembly | – | – | – | – | – |
| Elevator manufacturing (passenger elevator, freight elevator, car elevator up to 7 t)Assembly | – | – | 7 t (freight elevator) | – | Sheet steel, Stainless steel sheet, Plastic, Synthetic resin panels |
| Installation of elevator systemsAssembly | – | – | – | – | – |
| Pre-assemblyAssembly | – | – | – | – | – |
| Service and maintenance of elevators (including third-party brands)Assembly | – | – | – | – | – |
| Design and developmentEngineering | – | – | – | – | – |
6 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Laser cutting machine | Trumpf | 1 | – | 2009 | Lachen SZ |
| Laser cutting machine | Bystronic | – | – | – | – |
| Bending robot | Bystronic | – | – | 2024 | – |
| Tool changer | Bystronic | – | – | 2025 | – |
| Nitrogen generator | – | – | – | 2024 | Lachen |
| Sheet metal warehouse (automated) | – | – | – | 2021 | – |
Additional services
Quality
The in-house depth of production with own control system and metal fabrication in Switzerland ensures the quality of the systems. Original spare parts are largely manufactured in Lachen SZ and shipped by express delivery.
| Evidence | Lachen SZ |
|---|---|
| swiss made production |
History
- 1990
Founded by Hansruedi Diethelm in Vorderthal; initially installation of elevators from various manufacturers
- 1994
First service orders and service contracts as a second line of business
- 1999
Purchase of a factory in Vorderthal/SZ and start of own elevator manufacturing
- 2006
First patent: narrower shaft without machine room with noise reduction
- 2009
Installation of the first Trumpf laser system, replacing the plasma system
- 2012
Acquisition of the control system assembly plant of Swiss Lift in Kleinandelfingen ZH
- 2013
Relocation of the main site to Lachen SZ into a new production plant
- 2017
Release of the in-house elevator control system DI06 with first own circuit boards
- 2021
Expansion of the sheet metal warehouse
- 2024
Introduction of Bystronic bending robots and nitrogen generator
- 2025
Tool changers from Bystronic, solar roof in Lachen, e-charging stations in Lachen and Wangen
- 2026
Acquisition of the fully electric truck eActros 600