Repair, refurbishment and manufacturing of valves, pumps and gearboxes for industry
BBK Bergbaukontor GmbH
BochumNew on Amplifa
About BBK Bergbaukontor GmbH
BBK Bergbaukontor GmbH from Bochum is a specialist company for the repair and refurbishment of valves, pumps and gearboxes. Work is carried out either directly on site at the customer or in the company's own workshop; transport is handled by a company-owned fleet of vehicles. The range of services includes machining (turning, milling, boring mill and vertical turret lathe work, conventional and CNC), cylindrical and surface grinding, lapping as well as gate valve and valve lapping/grinding. In addition, welding technology with hardfacing and special alloys, metal and ceramic spraying processes, blasting and cleaning processes as well as test facilities for valves, pumps and gearboxes are employed. The main industries include mining, chemicals, power generation, metallurgy and steel production, food processing, waste disposal and water treatment. From 1 April 2025, the company operates CO₂-free with photovoltaics, 100 % green electricity, heat pumps and a hybrid fleet of company cars.
- Site
- Bochum
- Processes
- Turning (conventional, NC), Milling (conventional, CNC), Boring mill and vertical turret lathe work, Cylindrical grinding (external), Internal cylindrical grinding, Surface grinding, Lapping, Gate valve and valve lapping/grinding
- Materials
- Special alloys
- Certificates
- Zeiss measuring center, Pull-off test rigs
- Industries
- Mining, Chemicals, Power generation, Metallurgy and steel production, Food processing, Waste disposal and waste processing
- 01
On-site repairs or removal and collection of the components
- 02
Inspection and damage analysis
- 03
Cleaning (blasting, chemical, ultrasonic)
- 04
Welding and machining work
- 05
Testing of valves, pumps and gearboxes
- 06
Final assembly, return delivery and installation
Materials and Processes
Special alloys
Processing mainly for hardfacing and welding repairs.
Locations
Bochum
DEHead office with workshop
- Materials
- Special alloys
- Conventional lathes
- NC lathes
- Conventional and CNC milling machines
- Controlled boring-milling machines
- Conventional cylindrical grinding machine
- Lapping machine
- Valve and gate valve grinding machines
- Gas-shielded welding equipment (TIG/MIG/MAG)
- Universal measuring center Zeiss UMC850/UMC850 Carat
- Sand and glass bead blasting booth
- Small parts washing machine and wash table
- CNC band saw
- Hydraulic torque wrenches (up to 5000 Nm)
- Hydraulic press 200 t
- Mobile pull-off pumps and pull-off tables
Services and Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Turning (conventional, NC)Machining | – | – | – | – | – |
| Milling (conventional, CNC)Machining | – | – | – | – | – |
| Boring mill and vertical turret lathe workMachining | – | – | – | – | – |
| Cylindrical grinding (external)Machining | – | – | – | – | – |
| Internal cylindrical grindingMachining | – | – | – | – | – |
| Surface grindingMachining | – | – | – | – | – |
| LappingMachining | – | – | – | – | – |
| Gate valve and valve lapping/grindingMachining | – | – | – | – | – |
| Hardfacing / Welding work (TIG/MIG/MAG, oxy-fuel, manual electrode)Joining | – | – | – | – | Special alloys |
| Metal and ceramic spraying processesSurface | – | – | – | – | – |
| Sand and glass bead blastingSurface | – | – | – | – | – |
| Chemical cleaning / Ultrasonic cleaningSurface | – | – | – | – | – |
| Band saws, hacksaws, circular metal sawsMachining | – | – | – | – | – |
| Testing methods for valves, pumps and gearboxes (pull-off pumps/tables)Testing | – | – | – | – | – |
| Repair and refurbishment of valves, pumps and gearboxes (on-site and workshop)Assembly | – | – | – | – | – |
| Hydraulic press and bolting work (up to 5000 Nm, 200 t press)Assembly | – | – | – | – | – |
| Piping service: removal, machining, final assembly, testing, installationAssembly | – | – | – | – | – |
16 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Conventional lathe | – | – | – | – | Bochum |
| NC lathe | – | – | – | – | Bochum |
| Conventional milling machine | – | – | – | – | Bochum |
| CNC milling machine | – | – | – | – | Bochum |
| Controlled boring-milling machine | – | – | – | – | Bochum |
| Conventional cylindrical grinding machine | – | – | – | – | Bochum |
| Lapping machine | – | – | – | – | Bochum |
| Valve grinding machine | – | – | – | – | Bochum |
| Gate valve grinding machine | – | – | – | – | Bochum |
| Gas-shielded welding equipment (TIG/MIG/MAG) | – | – | – | – | Bochum |
| Universal measuring center | Zeiss UMC850/UMC850 Carat (MiRacon control) | – | – | – | Bochum |
| Sand and glass bead blasting booth | – | – | – | – | Bochum |
| Small parts washing machine and wash table | – | – | – | – | Bochum |
| CNC band saw | – | – | – | – | Bochum |
| Hydraulic torque wrench | – | – | Torque up to 5000 Nm | – | Bochum |
| Hydraulic press | – | – | 200 t | – | Bochum |
Additional services
Quality and Inspection Equipment
Valves, pumps and gearboxes are tested with mobile pull-off pumps and pull-off tables; measurement is performed with a universal measuring center Zeiss UMC850/UMC850 Carat.
| Evidence | Bochum |
|---|---|
| Zeiss measuring center | |
| Pull-off test rigs |
History
- 2025
From 1 April 2025, CO₂-free operation with 100 % green electricity, heat pumps, photovoltaics and a hybrid fleet of company cars.