Custom manufacturing, repair and testing of hydraulic cylinders as well as machining of single parts and series production in Leipzig.
Heinrich Paasch Maschinenbau GmbH
Leipzig (Knautnaundorf)New on Amplifa
About us
Heinrich Paasch Maschinenbau GmbH was founded in Leipzig in 1991 and is based in the Knautnaundorf district in the south-west of the city, accessible via the A38 and the B186. The company manufactures custom hydraulic cylinders in various designs – single and double-acting, as differential, parallel, telescopic and plunger cylinders as well as pressure intensifiers – up to a piston diameter of 250 mm, a stroke length of 2000 mm and operating pressures up to 500 bar. In addition, hydraulic and pneumatic cylinders are repaired, including seal replacement, special seals, piston rod renewal and barrel reworking. The machining operations include CNC and conventional turning and milling, drilling, sawing as well as CNC keyway broaching of keyways to DIN 6885 from single parts to medium series. Materials processed include steels, stainless steel, aluminium, plastics, non-ferrous metals and cast materials. The company also offers design, assembly, maintenance and servicing of assemblies and systems for industry and trade.
- Site
- Leipzig
- Processes
- Manufacturing of hydraulic cylinders (single/double-acting) up to piston diameter 250 mm, stroke, Oil-hydraulic working cylinders in designs: differential cylinders, parallel cylinders,, Repair of hydraulic and pneumatic cylinders (seal replacement, conversion to special seals,, CNC turning (distance between centres up to 2000 mm, max. swing diameter over bed 630 mm), CNC milling (max. travel x: 1060 mm, y: 610 mm, z: 610 mm), Conventional turning (distance between centres up to 3000 mm, max. swing diameter over bed 630 mm), Conventional milling (max. travel x: 600 mm, y: 300 mm, z: 250 mm), Drilling and sawing
- Materials
- Structural steels, Tool steels, Heat-treatable steels, Stainless steels, Aluminium, Miramid, POM, Sustamid
- Certificates
- Pressure testing up to 600 bar (function, leak-tightness)
- Founded
- 1991
- Industries
- Agricultural businesses, Mining, Foundries and rolling mills, Food industry, Mechanical and plant engineering, Commercial vehicle manufacturing
- 01
Consulting, planning and design
- 02
CNC/conventional turning and milling, drilling, sawing
- 03
CNC keyway broaching DIN 6885
- 04
Joining (welding MAG/MIG/E, brazing/soldering, bonding)
- 05
Grinding, hardening, surface finishing (outsourced)
- 06
Assembly of assemblies and systems
- 07
Pressure testing on hydraulic test bench up to 600 bar
- 08
Delivery, maintenance and servicing
Materials & Processes
Structural, tool and heat-treatable steels
Base materials for shafts, axles, pins and cylinder components.
Stainless steels
For hydraulic cylinders and components with elevated corrosion requirements.
Aluminium
Light metal for components requiring weight reduction.
Plastics (Miramid, POM, Sustamid)
For guide and wear parts as well as special components.
Bronze, hard bronze, brass, red bronze (gunmetal)
Non-ferrous metals for sliding and wear parts.
Cast steel and grey cast iron
Iron cast materials for machine components and cylinder components.
Locations
Leipzig (Knautnaundorf)
DEHead office and manufacturing
- Part weight / size
- Swing diameter over bed 630 mm
- Lot size
- Single part to medium series
- Materials
- Steels, stainless steel, aluminium, plastics, non-ferrous metals, castings
- CNC lathe (distance between centres 2000 mm)
- Conventional lathe (distance between centres 3000 mm)
- CNC milling machine (x 1060 / y 610 / z 610 mm)
- Conventional milling machine (x 600 / y 300 / z 250 mm)
- CNC keyway broaching machine DIN 6885
- Hydraulic test bench up to 600 bar
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacturing of hydraulic cylinders (single/double-acting) up to piston diameter 250 mm, strokeJoining | – | Stroke length 2000 mm × Piston diameter 250 mm | – | – | Stainless steel, Steel |
| Oil-hydraulic working cylinders in designs: differential cylinders, parallel cylinders,Assembly | – | Stroke length 2000 mm | – | – | – |
| Repair of hydraulic and pneumatic cylinders (seal replacement, conversion to special seals,Assembly | – | – | – | – | – |
| CNC turning (distance between centres up to 2000 mm, max. swing diameter over bed 630 mm)Machining | – | 2000 mm × 630 mm | – | Single part – Medium series | Steels (structural, tool, heat-treatable, stainless steels), Aluminium, Plastics (Miramid, POM, Sustamid), Bronze, hard bronze, brass, red bronze (gunmetal), Cast steel and grey cast iron |
| CNC milling (max. travel x: 1060 mm, y: 610 mm, z: 610 mm)Machining | – | 1060 mm × 610 mm × 610 mm | – | Single part – Medium series | Steels (structural, tool, heat-treatable, stainless steels), Aluminium, Plastics (Miramid, POM, Sustamid), Bronze, hard bronze, brass, red bronze (gunmetal), Cast steel and grey cast iron |
| Conventional turning (distance between centres up to 3000 mm, max. swing diameter over bed 630 mm)Machining | – | 3000 mm × 630 mm | – | – | Steels (structural, tool, heat-treatable, stainless steels), Aluminium, Plastics (Miramid, POM, Sustamid), Bronze, hard bronze, brass, red bronze (gunmetal), Cast steel and grey cast iron |
| Conventional milling (max. travel x: 600 mm, y: 300 mm, z: 250 mm)Machining | – | 600 mm × 300 mm × 250 mm | – | – | Steels (structural, tool, heat-treatable, stainless steels), Aluminium, Plastics (Miramid, POM, Sustamid), Bronze, hard bronze, brass, red bronze (gunmetal), Cast steel and grey cast iron |
| Drilling and sawingMachining | – | – | – | – | – |
| CNC keyway broaching of keyways to DIN 6885 (keyway width 6–22 mm, bore Ø 20–90 mm, keyway lengthsMachining | – | 300 mm × Bore Ø 90 mm | – | – | – |
| Joining: thermal joining (MAG/MIG/E welding), brazing/soldering, bonding, press andJoining | – | – | – | – | – |
| Grinding, hardening, surface finishing (among others induction hardening of piston rods,Surface | – | – | – | – | – |
| Manufacture of single parts, small and medium series (axles, pins, bushes, rollers, shafts)Machining | – | – | – | Single part – Medium series | Steels (structural, tool, heat-treatable, stainless steels), Aluminium, Plastics (Miramid, POM, Sustamid), Bronze, hard bronze, brass, red bronze (gunmetal), Cast steel and grey cast iron |
| Assembly of assemblies and systems including delivery, maintenance and servicing/overhaulAssembly | – | – | – | – | – |
| Consulting, planning and design of turned, milled and drilled partsEngineering | – | – | – | – | – |
| Pressure testing of hydraulic cylinders on hydraulic test bench (static testing up to 600 bar,Testing | – | – | – | – | – |
| Coloured priming of single parts, assemblies, systems and hydraulic cylinders on requestSurface | – | – | – | – | – |
6 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC lathe | – | – | Distance between centres 2000 mm, max. swing diameter over bed 630 mm | – | Leipzig |
| Conventional lathe | – | – | Distance between centres 3000 mm, max. swing diameter over bed 630 mm | – | Leipzig |
| CNC milling machine | – | – | Travel x 1060 mm, y 610 mm, z 610 mm | – | Leipzig |
| Conventional milling machine | – | – | Travel x 600 mm, y 300 mm, z 250 mm | – | Leipzig |
| CNC keyway broaching machine (keyways DIN 6885) | – | – | Keyway width 6–22 mm, bore Ø 20–90 mm, keyway length up to 300 mm | – | Leipzig |
| Hydraulic test bench | – | – | static pressure testing up to 600 bar | – | Leipzig |
Additional services
Quality
Every newly manufactured or repaired hydraulic cylinder is tested for function and leak-tightness on the in-house hydraulic test bench before delivery; static pressure tests up to 600 bar are possible.
| Evidence | Leipzig |
|---|---|
| Pressure testing up to 600 bar (function, leak-tightness) |
History
- 1991
Foundation of Heinrich Paasch Maschinenbau GmbH in Leipzig, location in the Knautnaundorf district