Overhaul of gas and diesel engines as well as rotating equipment with in-house mechanical manufacturing in Lingen (Ems).
Bücker & Essing GmbH
Lingen (Ems), DENew on Amplifa
About Bücker + Essing
Bücker + Essing is a company founded in 1963, part of the SERCOO Group, headquartered in Lingen (Ems) and specialized in the overhaul of gas and diesel engines as well as service for rotating equipment such as compressors, pumps, turbines and generators. The company performs around 600 complete engine overhauls per year, operates a power-pack overhaul line for rail traction motors and, in its own mechanical manufacturing, produces components such as crankshafts, engine blocks, cylinders and compressor valves – also as new fabrication based on drawings, samples or 3D laser scanning. The process spectrum includes CNC machining on a 5-axis boring-milling machine (workpieces up to 7 x 3 m, 13 t), grinding, honing, induction hardening, cold gas coating, wire and powder flame spraying as well as laser deposition welding. Materials include steel, stainless steel, aluminium, cast iron, grey cast iron, aluminium casting and tombak. Customers come from biogas and CHP, rail transport, commercial vehicles, marine, chemicals, petrochemicals, refineries, power plants and mechanical engineering. Mobile service teams carry out mechanical repairs on site worldwide.
- Site
- Lingen (Ems)
- Processes
- Complete overhaul of gas and diesel engines, Overhaul and new fabrication of cylinders, cylinder heads, crankshafts and crankcases, Regrinding of piston rods, crossheads and connecting rods, Manufacture of compressor valves, piston rod packings, pistons and rider rings, Repair of centrifugal pumps of all types, components and assemblies using CNC technology and, Assembly of pumps, fans, turbines and compressors, Reverse engineering with 3D laser scan, CAD model and new fabrication, Pressure testing and helium leak testing
- Materials
- Steel, Aluminium, Cast iron, Stainless steel, unalloyed and alloyed steels, chromium-nickel steels, grey cast iron (cylinder housings), aluminium casting (cylinder housings)
- Certificates
- DIN EN ISO 9001:2015, RAL quality seal RAL-GZ 797 (engine overhaul), ECM (Entity in Charge of Maintenance, rail vehicles), EN 15085-2 (rail vehicle welding, CL1), Germanischer Lloyd (wire and powder flame spraying), SCC, ATEX (repair of explosion-protected equipment), WHG certified specialist company, Materials testing according to DIN EN ISO 9712, ISO 9001, RAL-GZ 797 (engine overhaul), ECM (Entity in Charge of Maintenance), Germanischer Lloyd (flame spraying), ATEX (repair of Ex equipment)
- Founded
- 1963
- Employees
- 160
- Industries
- Biogas, CHP (combined heat and power), Energy utilities, Public transport / rail vehicles, Commercial vehicles, Marine
- 01
Disassembly, cleaning and condition assessment
- 02
Engineering / reverse engineering (3D laser scan, FEA)
- 03
Mechanical manufacturing (CNC, grinding, honing)
- 04
Surface technology (cold gas coating, metal spraying, laser welding)
- 05
Reassembly / assembly
- 06
Test bench run or outgoing inspection
- 07
Delivery / commissioning on site
Materials & Processes
Steel (unalloyed/alloyed)
Base material for shafts, crankshafts and UP welding work.
Stainless steel / chromium-nickel steels
Used among other things for heat exchanger covers, pumps and chemically stressed components.
Aluminium / aluminium casting
Processed for cylinder housings and cold gas coatings.
Cast iron / grey cast iron
Material of engine blocks and cylinder housings, including new castings with partners.
Tombak
Material for repair rings in cylinder liner fitting repairs.
Cold gas coating
Repair process for cavitation damage, rust and scoring with an ultra-hard coating layer.
Wire/powder flame spraying
Regeneration of crankshafts up to 8 m in length, certified by Germanischer Lloyd.
Laser deposition welding
Repair of bearing journals on rotors and workpiece regeneration.
Submerged arc welding
Joining welding and application of wear and corrosion protection layers.
Induction hardening
Heat treatment of shafts for low-wear surfaces.
CNC machining (5-axis)
Drilling, milling and grinding of engine blocks and housings up to 13 t.
Honing
For cylinder liners, bearing clearances and plain bearings.
Locations
Lingen (Ems)
DEHeadquarters, overhaul plant and mechanical manufacturing
- Part weight / size
- up to 13 t / 7 x 3 m
- Lot size
- Single parts and small series
- Materials
- Steel, stainless steel, aluminium, castings
- 5-axis CNC cross-bed boring-milling machine Fermat (2021)
- Metal spraying system for wire/powder flame spraying
- Cold gas spray system Dycomet
- Engine test bench for power packs and rail traction motors
- Grinding machine for marine crankshafts
- Power pack overhaul line
- Faro 3D laser scanner
- Faro laser tracker (mobile)
Components & Services
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Complete overhaul of gas and diesel enginesAssembly | – | – | – | – | – |
| Overhaul and new fabrication of cylinders, cylinder heads, crankshafts and crankcasesMachining | – | – | – | – | – |
| Regrinding of piston rods, crossheads and connecting rodsMachining | – | – | – | – | – |
| Manufacture of compressor valves, piston rod packings, pistons and rider ringsMachining | – | – | – | – | – |
| Repair of centrifugal pumps of all types, components and assemblies using CNC technology andMachining | – | – | – | – | – |
| Assembly of pumps, fans, turbines and compressorsAssembly | – | – | – | – | – |
| Reverse engineering with 3D laser scan, CAD model and new fabricationEngineering | hundredths of a millimetre | – | – | – | Stainless steel |
| Pressure testing and helium leak testingTesting | – | – | – | – | – |
| Production of casting models and raw cast cylindersCasting | – | – | – | – | Grey cast iron, Aluminium casting |
| Laser deposition welding of bearing journals on rotorsJoining | – | – | – | – | – |
| Balancing of rotors, crack testing of housingsTesting | – | – | – | – | – |
| Cold gas coating (cold gas spraying) for cavitation damage, rust and scoringSurface | – | – | – | – | Steel, Aluminium, Cast iron |
| Metal spraying (wire/powder flame spraying) for regeneration of crankshafts up to 8 m in length,Surface | – | 8 m | – | – | – |
| Laser welding for regeneration of workpiecesJoining | – | – | – | – | – |
| Submerged arc welding (UP welding) for joining welding and application of wear andJoining | – | – | – | – | unalloyed and alloyed steels, chromium-nickel steels |
| Grinding, polishing and hardening of shafts and crankshafts, manufacture of new crankshafts andMachining | – | – | – | – | – |
| Induction hardening processes on shaftsHeat treatment | – | – | – | – | – |
| Honing of cylinder liners, bearing clearances, connecting rods and crosshead plain bearingsMachining | – | – | – | – | – |
| Engine block machining: boring of main bearing clearances, facing of crankcases, re-seating ofMachining | – | – | – | – | – |
| Cylinder liner fitting repair with tombak ringsMachining | – | – | – | – | – |
| Component overhaul: cylinder heads, connecting rods, crossheads, pistons, camshaftsMachining | – | – | – | – | – |
| Coating of pistons to restore OEM dimensionsSurface | – | – | – | – | – |
| 5-axis CNC machining (drilling, milling, grinding, spindles) of engine blocks, compressor andMachining | – | 7 m × 3 m | 13 t | – | – |
| Mobile service: machining of bearing clearances, turning of heat exchanger covers, reworking ofMachining | – | – | – | – | Stainless steel |
| Laser measurement of machines, components and workpieces (laser tracker)Testing | hundredths of a millimetre | – | – | – | – |
| 3D laser scanning for plant/building management and reverse engineeringTesting | hundredths of a millimetre | – | – | – | – |
| Deformation analyses on machines in operation (hot-cold measurement)Testing | – | – | – | – | – |
| FEA and feasibility studiesEngineering | – | – | – | – | – |
| Crack and hardness testing (magnetic particle testing, visual inspection, fracture crack testing,Testing | – | – | – | – | – |
| ATEX overhauls of pumps, compressors, fans, agitators, couplings andAssembly | – | – | – | – | – |
| Rail vehicle welding according to EN 15085-2 (CL1)Joining | – | – | – | – | – |
| Small-series production of gas/hydrogen engines, conversion of diesel engines to hydrogen andAssembly | – | – | – | – | – |
| Power pack overhaul including engine, gearbox, cooler and generator with test bench runAssembly | – | – | – | – | – |
| Separation of heat exchanger covers with a mobile machining toolMachining | – | – | – | – | Stainless steel |
| Casting and forging with partners: cast shafts, cylinder housings in grey/aluminium casting,Casting | – | – | – | – | Grey cast iron, Aluminium casting |
9 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 5-axis CNC cross-bed boring-milling machine | Fermat | 1 | Workpieces up to 7x3 m, 13 t | 2021 | Lingen (Ems) |
| Metal spraying system (wire/powder flame spraying) | – | 1 | Crankshafts up to 8 m in length, stroke up to 600 mm | – | Lingen (Ems) |
| Cold gas spray system | Dycomet | 1 | – | – | Lingen (Ems) |
| Engine test bench (power packs and rail traction motors) | – | – | – | – | Lingen (Ems) |
| Grinding machine for marine crankshafts (large engines) | – | – | – | 1988 | Lingen (Ems) |
| 3D laser scanner | Faro | – | – | – | Lingen (Ems) |
| Mobile laser tracker | Faro | – | – | – | – |
| CNC machine fleet | – | – | – | – | Lingen (Ems) |
| Power pack overhaul line | – | 1 | – | – | Lingen (Ems) |
Additional services
Reference customers
Quality & Certifications
The processes are quality-assured according to DIN EN ISO 9001:2015; materials testing (magnetic particle, fracture crack and hardness testing) is carried out by personnel certified to DIN EN ISO 9712, complemented by laser measurement in the hundredth-of-a-millimetre range as well as pressure and helium leak tests.
| Evidence | Lingen (Ems) |
|---|---|
| ISO 9001 | |
| RAL-GZ 797 (engine overhaul) | |
| ECM (Entity in Charge of Maintenance) | |
| EN 15085-2 (rail vehicle welding, CL1) | |
| Germanischer Lloyd (flame spraying) | |
| SCC | |
| ATEX (repair of Ex equipment) | |
| WHG certified specialist company | |
| Materials testing according to DIN EN ISO 9712 |
Company History
- 1963
Founded by Josef Bücker and Hermann Essing in Lingen; specialization in diesel engines for trucks and commercial vehicles (Deutz, Mercedes).
- 1977
New building on Friedrich-Ebert-Straße in Lingen; initiator of the quality seal for completely overhauled engines (today RAL-GZ 797).
- 1988
Entry into marine engines/large engines for inland waterway vessels with the first large crankshaft grinding machine.
- 1989
Establishment of the turbocharger business unit.
- 1991
Gas engine overhaul; contract partner Perkins, later Jenbacher and MWM.
- 1996
Hall extension and introduction of quality management according to DIN EN ISO 9002.
- 2000
Dr. Carsten Bücker takes over the management.
- 2006
Expansion of mechanical manufacturing with a hall extension.
- 2014
Bücker + Essing becomes part of the SERCOO Group.
- 2016
Entry into the rotating equipment service business.
- 2018
55 years of Bücker + Essing.
- 2021
Investment of approx. €1.5 million in a 5-axis CNC cross-bed boring-milling machine (Fermat) including a 250 m² hall.