Contract manufacturing of deep-drilled precision parts: deep hole drilling, turning, honing and CNC machining of round steel and forged parts.
R. Walter Dittmann GmbH & Co. KG
23909 Ratzeburg · Schleswig-HolsteinNew on Amplifa
Company
R. Walter Dittmann GmbH & Co. KG (Zylinderrohr) was founded in 1947 and specializes in deep hole drilling. The company in Ratzeburg acts as a supplier to various industries, producing precision parts to drawing, in particular cylinder tubes and deep-drilled components made of round steel and forged parts. In addition to deep hole drilling (inner diameter up to 700 mm, outer diameter up to 1300 mm, lengths up to approx. 8000 mm), the value chain includes turning and cycle turning up to approx. 10,000 mm length, CNC turning, CNC milling, boring mill work up to spindle diameter 130 mm, honing work up to 700 mm diameter, sawing, grinding with superfinishing, roller burnishing, coatings, heat treatment as well as welding of assembled component groups. The extensive machine park includes several cycle turning machines, including a system with 1300 x 8000 mm machining length, C-axis and self-centering steadies. With a chip centrifuge for oil-chip separation, the company contributes to the circular economy in the machining process.
- Site
- Ratzeburg
- Processes
- Deep hole drilling, Turning, CNC turning, CNC milling, Honing (honing work), Sawing (sawn discs and cut sections), Grinding with superfinishing, Roller burnishing
- Materials
- Round steel, Forged parts, Deep hole drilling, Cycle turning, Honing, Grinding with superfinishing, Roller burnishing, CNC milling
- Founded
- 1947
- Industries
- Supplier industry, Mechanical engineering, Hydraulics/Pneumatics, Supplier industry / various industries
- 01
Sawing (blanks and cut sections)
- 02
Deep hole drilling
- 03
Turning / cycle turning
- 04
CNC milling
- 05
Boring mill work
- 06
Honing / grinding with superfinishing / roller burnishing
- 07
Welding of assembled component groups
- 08
Heat treatment
- 09
Coatings
Materials and Processes
Deep hole drilling
Core process for producing through holes and blind holes in long rotational components up to approx. 8000 mm length.
Cycle turning
Turning of long workpieces on cycle turning machines up to 1300 x 8000 mm machining length with C-axis.
Honing
Fine machining of bores up to max. 700 mm diameter to achieve high surface quality.
Grinding with superfinishing
Fine grinding process for maximum surface quality and dimensional accuracy.
Roller burnishing
Forming burnishing of surfaces to increase fatigue strength.
CNC milling
Machining on a vertical machining center for contours and hole patterns.
Boring mill work
Table-type boring mill up to spindle diameter 130 mm, swivel work with accuracy up to 2 arcseconds per meter.
Sawing
Sawn discs and cut sections, blanks up to diameter 800 mm, to drawing.
Welding
Welding of assembled component groups including subsequent heat treatment.
Coatings
Coating of metallic or semi-metallic materials to influence physical, electrical and chemical properties.
Locations
Ratzeburg
DEHeadquarters and production plant
- Part weight / size
- Precision parts Ø 1300/1600 mm, approx. 10,000 mm length
- Lot size
- Individual parts to series production to drawing
- Materials
- Steel, round steel, forged parts
- Cycle turning machine Dm. 830 x 4000 mm
- Cycle turning machine Dm. 530 x 3000 mm
- Cycle turning machine Dm. 1300 x 8000 mm with C-axis
- Vertical machining center
- Table-type boring mill up to spindle diameter 130 mm
- Chip centrifuge
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Deep hole drillingMachining | – | approx. 8000 mm × outer diameter 1300 mm | – | – | Steel, Round steel, Forged parts |
| TurningMachining | – | approx. 10,000 mm × Diameter 1300/1600 mm | – | – | – |
| CNC turningMachining | – | – | – | – | – |
| CNC millingMachining | – | – | – | – | – |
| Honing (honing work)Surface | – | max. diameter 700 mm | – | – | – |
| Sawing (sawn discs and cut sections)Machining | – | Blank sections up to diameter 800 mm | – | – | – |
| Grinding with superfinishingSurface | – | – | – | – | – |
| Roller burnishingSurface | – | – | – | – | – |
| Boring mill work (table-type boring mill)Machining | up to 2 arcseconds per meter (swivel work) | – | – | – | – |
| CoatingsSurface | – | – | – | – | metallic or semi-metallic materials |
| Welding of assembled component groups (weldments)Joining | – | – | – | – | – |
| Heat treatmentHeat treatment | – | – | – | – | – |
| Machining of precision partsMachining | – | approx. 10,000 mm × Diameter 1300/1600 mm | – | – | – |
6 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Cycle turning machine | – | 1 | Dm. 830 x 4000 mm machining length | 1990er/200 | Ratzeburg |
| Cycle turning machine | – | 1 | Dm. 530 x 3000 mm | 2008 | Ratzeburg |
| Cycle turning machine with C-axis and self-centering steadies | – | 1 | Dm. 1300 x 8000 mm machining length | 2009 | Ratzeburg |
| Vertical machining center | – | 1 | – | 1990er/200 | Ratzeburg |
| Table-type boring mill | – | – | up to spindle diameter 130 mm | – | Ratzeburg |
| Chip centrifuge | – | 1 | – | 2008 | Ratzeburg |
Additional services
History
- 1947
Foundation of the company by R. Walter Dittmann with specialization in deep hole drilling.
- 1997
After the death of the founder, Norbert Bley and Jens Harms continued to run the company.
- 1990er–2000e
Expansion of the machine park, including a cycle turning machine 830 x 4000 mm and a vertical machining center.
- 2007
Norbert Bley left the company for health reasons.
- 2008
Acquisition of a cycle turning machine 530 x 3000 mm as well as a chip centrifuge for oil-chip separation.
- 2009
Cycle turning machine 1300 x 8000 mm with C-axis and self-centering steadies.