
Specialist in washing and lubricating machines as well as mechanical workshop work for the watch industry
Jema SA
SwitzerlandNew on Amplifa
About Jema SA
Jema SA is a Swiss supplier specialized in the watch industry, offering machines and mechanical services. The company develops and manufactures washing machines with and without ultrasound (models DH4 and DH5, optionally with ATEX certification) as well as lubricating machines of the models Mini-Lubro 2 and Lubromatic III. In addition, Jema SA operates a mechanical workshop atelier for general mechanics and sells consumables such as stainless steel baskets, coated baskets, Ketron plates and basket holders. The range of services includes a design office (Bureau d'étude), customer service and emergency repairs. Communication is conducted in French; customers come mainly from the watch industry and general mechanics.
- Site
- Switzerland
- Processes
- Machines de lavage avec ultrasons (DH4/DH5), Machines de lavage sans ultrasons (DH4/DH5), Machine de lubrification Mini-Lubro 2, Machine de lubrification Lubromatic III, Atelier mécanique / Mécanique générale, Design office (Bureau d'étude), Customer service (after-sales service), Emergency repairs (breakdown service)
- Materials
- Inox (stainless steel), Ketron (plastic), Stainless steel
- Certificates
- ATEX (certification for washing machines DH4/DH5), ATEX (for DH4/DH5)
- Industries
- Watch industry, General mechanics
- 01
Design (Bureau d'étude)
- 02
Manufacturing in the mechanical workshop
- 03
Sales of the machines
- 04
Customer service and emergency repairs
- 05
Consumables
Materials & Materials
Stainless steel
Used in the DH4/DH5 washing machines as well as for stainless steel baskets as consumables.
Ketron (plastic)
Used for plates as consumables.
Sites

Switzerland
CHHeadquarters
- Washing machine DH4
- Washing machine DH5
- Lubricating machine Mini-Lubro 2
- Lubricating machine Lubromatic III
Products & Components



Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Machines de lavage avec ultrasons (DH4/DH5)Testing | – | – | – | – | Inox |
| Machines de lavage sans ultrasons (DH4/DH5)Testing | – | – | – | – | Inox |
| Machine de lubrification Mini-Lubro 2Assembly | – | – | – | – | – |
| Machine de lubrification Lubromatic IIIAssembly | – | – | – | – | – |
| Atelier mécanique / Mécanique généraleMachining | – | – | – | – | Inox |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Washing machine DH4 | Jema SA DH4 | – | – | – | – |
| Washing machine DH5 | Jema SA DH5 | – | – | – | – |
| Lubricating machine Mini-Lubro 2 | Jema SA Mini-Lubro 2 | – | – | – | – |
| Lubricating machine Lubromatic III | Jema SA Lubromatic III | – | – | – | – |
Additional services
Quality & Certification
The DH4 and DH5 washing machines are optionally available with ATEX certification.
| Evidence | Switzerland |
|---|---|
| ATEX (for DH4/DH5) |