Precision turned parts, milled parts, ground components and ready-to-install assemblies made of metal for mechanical and plant engineering.
JOMA-Maschinenbau GmbH
Tiefenbronn-Lehningen (Headquarters/Production)New on Amplifa
Machining expertise from a family business since 1960
JOMA-Maschinenbau GmbH is a medium-sized family business founded in 1960, now in its third generation, based in Tiefenbronn-Lehningen (Baden-Württemberg). With 175 employees, the company manufactures precision parts as contract manufacturing: its range of services includes CNC turning on Swiss-type lathes (Ø 2.5 to 28 mm, lengths up to 400 mm) and bar machines (up to Ø 250 mm), CNC milling in 3 to 5 axes (lengths up to 2000 mm, widths up to 600 mm) as well as internal, external cylindrical and surface grinding. The value chain is complemented by MAG and TIG welding with TÜV-certified welders, polishing, wet painting, and the assembly of ready-to-install assemblies and complete machine assemblies. Materials processed include steels (free-cutting, gear, case-hardening and heat-treatable steels), stainless steels, aluminium, brass, copper, bronze, castings and forgings as well as plastics – only after passing incoming inspection. Heat treatment and coatings are coordinated by JOMA through audited partner companies. Customers come from mechanical engineering, plant and equipment construction, machine tool manufacturing, the chemical, oil and power plant industries, as well as pipeline construction and the furniture industry; the parts are in use worldwide.
- Site
- Tiefenbronn-Lehningen
- Processes
- CNC turning (Swiss-type turning, bar automatic lathes), CNC turning (bar machines), CNC turning, CNC milling (3-5 axis), Cylindrical grinding (external/internal), Surface grinding, MAG welding (metal active gas welding), TIG welding (tungsten inert gas welding)
- Materials
- Steel, Stainless steel / rust-free steels, Tool steel, Chromium steel, Free-cutting steels, Gear steels, Case-hardening steels, Heat-treatable steels
- Certificates
- Incoming inspection of all materials, 3-D coordinate measuring machine (since 2003), Seamless inspection documentation from order to delivery, TÜV-certified welder, ISO 9001
- Founded
- 1960
- Employees
- 175
- Industries
- Mechanical engineering, Plant engineering, Special machinery manufacturing, Device and apparatus manufacturing, Machine tool manufacturing, Chemical plant engineering
- 01
Order clarification and consulting (incl. material recommendation)
- 02
Production planning (CAM/CAD, ERP-PPS)
- 03
Material procurement with incoming inspection
- 04
CNC turning / CNC milling / grinding
- 05
Heat treatment and coating (partners, coordinated by JOMA)
- 06
Welding, polishing, painting
- 07
Assembly of subassemblies / final assembly
- 08
Inspection on coordinate measuring machine
- 09
Documentation and delivery (consignment warehouse/call-off possible)
Manufacturing Site
Tiefenbronn-Lehningen
DEHeadquarters and production facility
- Part weight / size
- Turning Ø 2.5–500 mm, milling up to 2000 mm length,
- Lot size
- 1–1000 pieces (grinding up to approx. 500 parts)
- Materials
- Steel, stainless steel, aluminium, brass, copper, bronze, cast, plastic
- CNC Swiss-type lathes (Ø 2.5–28 mm, up to 400 mm)
- Bar machines up to Ø 250 mm
- Conventional long and short turning lathes
- 5-axis milling centre (X/Y/Z 650/750/500 mm, table Ø 500 mm, 500 kg)
- Horizontal machining centre from Heller
- CNC gear-cutting machines
- Rotary indexing machines
- Internal/external cylindrical and surface grinding machines
- 3-D coordinate measuring machine
- MAG/TIG welding stations
Manufactured Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CNC turning (Swiss-type turning, bar automatic lathes)Machining | – | 400 mm | Ø 2.5 to Ø 28 mm | – | Free-cutting steels, Gear steels, Case-hardening steels, Heat-treatable steels, Stainless steels, Copper-beryllium, Brass, Aluminium, Bronze, Copper, Plastic |
| CNC turning (bar machines)Machining | – | – | up to Ø 250 mm | – | Brass, Steel, Stainless steel, Aluminium, Bronze, Copper, Plastic |
| CNC turningMachining | – | 1000 mm | max. diameter 500 mm | 1 – 1000 | Steel, Stainless steel, Aluminium |
| CNC milling (3-5 axis)Machining | – | 2000 mm × 600 mm | – | – | Steel, Stainless steel, Tool steel, Chromium steel, Aluminium, Plastics |
| Cylindrical grinding (external/internal)Machining | – | 1500 mm | max. diameter 350 mm | approx. 500 parts | all common materials, hardened and soft |
| Surface grindingMachining | – | 1000 mm × 400 mm | – | approx. 500 parts | all common materials |
| MAG welding (metal active gas welding)Joining | – | – | – | – | Steels |
| TIG welding (tungsten inert gas welding)Joining | – | – | – | – | – |
| PolishingSurface | – | – | – | – | – |
| Wet paintingSurface | – | – | – | – | – |
| Assembly of subassemblies / final assembly (ready-to-install assemblies)Assembly | – | – | – | 1 – 1000 | – |
| Heat treatment (stress-relief annealing, hardening, nitriding) – coordinated via partnersHeat treatment | – | – | – | – | – |
| Coating (painting, wear-resistant coatings, bluing, zinc plating, anodizing, hard anodizing)Surface | – | – | – | – | – |
| Broaching / deep-hole drilling (via partner companies)Machining | – | – | – | – | – |
| Inspection / measurement (measuring machine, 3-D coordinate measuring machine)Inspection | – | – | – | – | – |
9 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 5-axis milling centre | – | 1 | Travel ranges X/Y/Z 650/750/500 mm, table diameter 500 mm, load capacity 500 kg | – | Tiefenbronn-Lehningen |
| CNC Swiss-type lathes | – | – | Ø 2.5 mm to Ø 28 mm, lengths up to 400 mm | – | Tiefenbronn-Lehningen |
| conventional long and short turning lathes | – | – | – | – | Tiefenbronn-Lehningen |
| Bar machines | – | – | up to Ø 250 mm | – | Tiefenbronn-Lehningen |
| CNC gear-cutting machines | – | – | – | – | Tiefenbronn-Lehningen |
| Rotary indexing machines | – | – | – | – | Tiefenbronn-Lehningen |
| Grinding machines (internal/external cylindrical and surface grinding machines) | – | – | External cylindrical max. approx. Ø350×1000 mm, internal max. approx. Ø150×200 mm, surface 1000×400 | – | Tiefenbronn-Lehningen |
| 3-D coordinate measuring machine | Heller | 1 | – | 2003 | Tiefenbronn-Lehningen |
| Horizontal machining centre (Heller) | Heller | 1 | – | 2007 | Tiefenbronn-Lehningen |
Additional services
Quality
Every employee bears responsibility for the quality of their work step; results are documented seamlessly from order intake to delivery. Inspection is carried out, among other things, on a 3-D coordinate measuring machine (since 2003) as well as with the necessary measuring equipment and measuring systems.
| Evidence | Tiefenbronn-Lehningen |
|---|---|
| Incoming inspection of all materials | |
| 3-D coordinate measuring machine (since 2003) | |
| Seamless inspection documentation from order to delivery | |
| TÜV-certified welder | |
| ISO 9001 |
Company History
- 1960
Founded as a sole proprietorship by Karl Jost with contract turning and milling
- 1968
Walter Hasenmeier (son-in-law of the company founder) joins as works manager
- 1969
Expansion of business activities with assembly of subassemblies
- 1970
Start of apprentice training
- 1971
Occupancy of the new company building
- 1977
Development and sale of motor vehicle pressure testing devices
- 1980
Acquisition of the first CNC-controlled machine
- 1985
Conversion to GmbH and Gerlinde Hasenmaier joins the management
- 1998
Introduction of an ERP-PPS system
- 2003
Acquisition of the first 3-D coordinate measuring machine
- 2006
Introduction of a graphical CAM/CAD system and Rüdiger Hasenmaier joins the management
- 2007
Acquisition of a Heller horizontal machining centre
- 2010
50th company anniversary
- 2010+
Investment in a 5-axis milling centre to round out the manufacturing portfolio