Repair and overhaul of agricultural, construction machinery and industrial engines including machining of engine parts
Motoren Michaelis GmbH & Co. KG
StraubingNew on Amplifa
About Motoren Michaelis
Motoren Michaelis GmbH & Co. KG is a long-established family business in Straubing specializing in the repair and overhaul of agricultural, construction machinery and industrial engines. The service portfolio includes complete and partial overhaul, the supply of reconditioned exchange engines and new engines, as well as the machining of individual engine components. Processes include cylinder head reconditioning with surface grinding and valve seat milling, crankshaft grinding and hardening, fine boring and honing of engine blocks, measuring and reconditioning of connecting rods, as well as spray coating and grinding of bearing seats. Materials such as aluminium, cast iron and steel are machined. Customers come from industry, agricultural and construction machinery technology, as well as the transport and vintage car sectors. With 18 employees, around 1,200 engines are processed per year and approximately 250 service assignments are carried out within an active radius of approx. 180 km around Straubing. The company is certified according to ISO 9001 and ISO 14001.
- Site
- Straubing
- Processes
- Complete overhaul of engines, Partial overhaul according to customer specifications, Cylinder head reconditioning (surface grinding, valve replacement, valve guide replacement, valve, Build-up welding on the sealing surface of aluminium heads followed by surface milling, Crankshaft grinding and hardening, Camshaft grinding, Fine boring and honing of engine blocks and cylinders, Measuring, aligning and reconditioning of connecting rods
- Materials
- Aluminium (aluminium heads), Cast iron, Steel, Aluminium
- Certificates
- ISO 9001, ISO 14001
- Employees
- 18
- Industries
- Industry, Agricultural machinery/Agriculture, Construction machinery, Transport/Vintage cars, Automotive
- 01
Diagnosis and consulting
- 02
Disassembly and measuring
- 03
Machining (grinding, fine boring, honing, surface milling)
- 04
Build-up welding or spray coating
- 05
Assembly
- 06
Final inspection and delivery
Materials & Processes
Aluminium
On aluminium heads, repaired on the sealing surface by build-up welding and subsequently surface-milled.
Cast iron
Engine blocks and cylinders are fine-bored and honed; thread repairs using Heli-Coil inserts.
Steel
Crankshafts are ground and hardened; thread repairs in steel are possible.
Locations
Straubing
DEHeadquarters / Workshop
- Materials
- Aluminium, cast iron, steel
- Machine fleet for engine machining (details not specified)
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Complete overhaul of enginesAssembly | – | – | – | – | – |
| Partial overhaul according to customer specificationsAssembly | – | – | – | – | – |
| Cylinder head reconditioning (surface grinding, valve replacement, valve guide replacement, valveMachining | – | – | – | – | – |
| Build-up welding on the sealing surface of aluminium heads followed by surface millingJoining | – | – | – | – | Alu |
| Crankshaft grinding and hardeningSurface | – | – | – | – | – |
| Camshaft grindingMachining | – | – | – | – | – |
| Fine boring and honing of engine blocks and cylindersMachining | – | – | – | – | – |
| Measuring, aligning and reconditioning of connecting rodsTesting | – | – | – | – | – |
| Replacement or manufacture of connecting rod bushesMachining | – | – | – | – | – |
| Reconditioning of shaft bearing surfaces by spray coating and grindingSurface | – | – | – | – | – |
| Reconditioning of bearing seats for ball and roller bearings by spray coating and grindingSurface | – | – | – | – | – |
| Thread repair (drilling out broken stand bolts/screws)Machining | – | – | – | – | – |
| Repair of internal threads with Heli-Coil wire thread insertsAssembly | – | – | – | – | Steel, Cast iron, Alu |
| Surface turning of brake discs and brake drums for passenger carsMachining | – | – | – | – | – |
| Fine boring of vacuum pump housingsMachining | – | – | – | – | – |
| Maintenance and repair services, inspections, preventive maintenanceAssembly | – | – | – | – | – |
Additional services
Quality & Certification
The engines undergo strict quality controls and testing procedures; engine parts are measured before machining. The company is certified according to ISO 9001 and ISO 14001.
| Evidence | Straubing |
|---|---|
| ISO 9001 | |
| ISO 14001 |
History
Long-established family business; year of foundation not specified
- 2025
Certification according to ISO 9001 and ISO 14001 by Visocert