Heavy machining: CNC and conventional turning, drilling and milling as well as welded constructions up to 13 t in Bocholt.
Leiting GmbH & Co. KG Dreherei und Maschinenbau
BocholtNew on Amplifa
About us
Leiting GmbH & Co. KG Dreherei und Maschinenbau is a contract manufacturer for heavy machining based in Bocholt, in operation since its founding in 1969. The company manufactures turned parts up to 10 t in weight (outer diameter up to 2000 mm, turning length up to 6000 mm) as well as drilling and milling work up to 7000 x 3000 mm and 13 t, both as individual parts and as series products in large quantities. Processes include CNC and conventional turning, drilling and milling including 5-axis machining, turn-milling with Y-axis, keyway broaching, sawing, welded constructions to DIN EN ISO 3834-3, build-up welding and hardfacing, priming, painting, preservation and assembly up to 13 t. Materials machined include S355JR, Ste690, C45, 42CrMo4V, 30CrNiMo8V, 34CrNiMo6V and low-temperature steel; forgings and open-die forgings are procured on an order-specific basis with 3.1 certificates and UT testing. Customers come from mechanical and plant engineering, mining, conveying technology, recycling plant construction, steelworks technology, and pump, agitator and silo technology. The factory site on Robert-Bosch-Straße features four halls with overhead cranes up to 10 t as well as a separate welders' hall; around 20–25 employees manufacture in single-shift operation.
- Site
- Bocholt
- Processes
- Turning CNC/conventional, Drilling and milling work (floor-type boring machine with angle head), CNC 5-axis machining (Lagun BM 3 RT), Turn-milling (Doosan Puma 700 LY, with driven tools and Y-axis), Welded constructions with mechanical machining to DIN EN ISO 3834-3 (gas-shielded MIG/MAG), Build-up welding / hardfacing, Assembly, Keyway broaching
- Materials
- S355JR, Ste690, C45, 42CrMo4V, 30CrNiMo8V, 34CrNiMo6V, Low-temperature steel, S235
- Certificates
- ISO 9001:2015, DIN EN ISO 3834-3:2021 (Welding quality requirements), DIN EN ISO 3834-3:2021, ISO 14001, IATF 16949
- Founded
- 1969
- Employees
- 20-25
- Industries
- General plant and mechanical engineering, Mining, Conveying technology, Machinery for recycling plants, Steelworks technology, Pump engineering
- 01
Material procurement (incl. forgings with 3.1 certificate and UT testing)
- 02
Sawing
- 03
Turning / drilling and milling / 5-axis machining / keyway broaching
- 04
Welding (gas-shielded, ISO 3834-3)
- 05
Heat treatment and surface treatment in cooperation
- 06
Quality control with dimensional inspection reports
- 07
Assembly up to 13 t
- 08
Priming / painting / preservation and shipping
Materials & Processes
S355JR
Structural steel for hard-to-machine components in mechanical and plant engineering.
Ste690
High-strength steel for highly stressed components such as mining and conveying technology.
C45
Heat-treatable steel for shafts, journals and other machine parts.
42CrMo4V
Heat-treated steel for highly loaded shafts and gear parts.
30CrNiMo8V
Heat-treatable steel for large-volume, dynamically loaded components.
34CrNiMo6V
Heat-treatable steel for shafts and drive elements.
Low-temperature steel
Steel for components with requirements at low service temperatures.
Gas-shielded welding to DIN EN ISO 3834-3
Manufacture of welded constructions with subsequent mechanical machining.
Build-up welding / hardfacing
Extension of the service life of wear-stressed components.
Forgings / open-die forgings
Order-specific procurement with 3.1 certificate and UT testing.
Locations
Bocholt
DEHeadquarters and manufacturing in four halls, welders' hall, plus the premises at Robert-Bosch-Str. 23 as a storage yard
- Part weight / size
- Turning up to 10 t, milling up to 13 t, welded
- Lot size
- Individual parts to series products
- Materials
- Bar steels, heat-treatable steels, low-temperature steel, forgings and open-die forgings
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Turning CNC/conventionalMachining | – | 6000 mm | 10 t | Individual parts – Series products | S355JR, Ste690, C45, 42CrMo4V, 30CrNiMo8V, 34CrNiMo6V, Low-temperature steel |
| Drilling and milling work (floor-type boring machine with angle head)Machining | – | 7000 mm × 3000 mm | 13 t | – | S355JR, Ste690, C45, 42CrMo4V, 30CrNiMo8V, 34CrNiMo6V, Low-temperature steel |
| CNC 5-axis machining (Lagun BM 3 RT)Machining | – | 3000 mm × 1500 mm × 1400 mm | – | – | – |
| Turn-milling (Doosan Puma 700 LY, with driven tools and Y-axis)Machining | – | 3200 mm | – | – | – |
| Welded constructions with mechanical machining to DIN EN ISO 3834-3 (gas-shielded MIG/MAG)Joining | – | – | 2.5 t | – | S235, S355, S690QL |
| Build-up welding / hardfacingJoining | – | – | – | – | – |
| AssemblyAssembly | – | – | 13 t | – | – |
| Keyway broachingMachining | – | 80 mm × 350 mm | – | – | – |
| SawingMachining | – | – | – | – | – |
| Radial drillingMachining | – | – | – | – | – |
| Magnetic particle inspection Level 2Testing | – | – | – | – | – |
| Dye penetrant testing Level 1Testing | – | – | – | – | – |
| Priming / painting / preservationSurface treatment | – | – | – | – | – |
| Hardening (case hardening, surface hardening), nitriding, tempering (cooperation)Heat treatment | – | – | – | – | – |
| Galvanizing (cooperation)Surface treatment | – | – | – | – | – |
| Cylindrical grinding (cooperation)Machining | – | – | – | – | – |
| Annealing incl. sandblasting (cooperation)Heat treatment | – | – | – | – | – |
| Gear cutting (cooperation)Machining | – | – | – | – | – |
| Machining of forgings and open-die forgings (with 3.1 certificate and UT testing)Machining | – | – | 10 t | – | S355JR, Ste690, C45, 42CrMo4V, 30CrNiMo8V, 34CrNiMo6V, Low-temperature steel |
31 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Floor-type boring machine with angle head | Union BFT 160 CNC | 1 | Spindle Ø160 mm; travel x=7000, y=3000, z=1500 mm; rotary table 2000x2000 mm | – | Bocholt |
| 5-axis bed-type milling machine | Lagun BM 3 RT | 1 | Travel x=3000, y=2000, z=1400 mm; rotary table 1600x1200 mm; angle head 2.5° Hirth serration; | 2024 | Bocholt |
| NC drilling and boring mill | S.Rocco MEC4 | 1 | Spindle Ø101 mm; travel x=2050, y=1150, z=1400 mm; rotary table 1520x1200 mm | – | Bocholt |
| CNC drilling and boring mill | Union BFT 90 | 1 | Spindle Ø102 mm; travel x=1600, y=1100 mm; rotary table 1400x1200 mm | – | Bocholt |
| Conventional drilling and boring mill | Wotan | 1 | Spindle Ø120 mm; travel x=2700, y=1800 mm; table 1800x1500 mm | – | Bocholt |
| CNC lathe | Krewema HFDM 45 | 1 | Center height 475 mm; turning length 4000 mm; swing diameter 1750 mm | 2021 | Bocholt |
| CNC universal center lathe | Gurutzpe A-1000/1 | 1 | Center height 500 mm; turning length 4000 mm; outer Ø 1000 mm; FAGOR 8055 TC | – | Bocholt |
| Turn-mill center | Doosan Puma 700 LY | 1 | Center height 500 mm; turning length 3200 mm; Ø750 mm; Y-axis +/-125 mm; 12-position turret BMT 85 | 2023 | Bocholt |
| CNC lathe | Homa Ecoturn 315 | 1 | Ø400 mm; turning length 770 mm | – | Bocholt |
| CNC lathe | Monforts 315 | 1 | Ø300/315 mm; turning length 600 mm | – | Bocholt |
| Conventional lathe | PDR | 1 | Ø1350/1380 mm; center height 500 mm; turning length 6000 mm; load capacity up to 10 t | 2016 (Gene | Bocholt |
| Conventional lathe | Sui 80 long | 1 | Ø800 mm; center height 400 mm; turning length 6000 mm | 2011 | Bocholt |
| Conventional lathe | Sui 80 short | 1 | Ø800 mm; center height 400 mm; turning length 2000 mm | 2019 | Bocholt |
| Conventional lathe | Mexpol Tus 1000 | 1 | Ø1350 mm; center height 500 mm; turning length 4000 mm | 2012 | Bocholt |
| Facing lathe | Zerbst DP 1 | 1 | Ø2000 mm; center height 800 mm; turning length 3000 mm | – | Bocholt |
| Face lathe | Nieles | 1 | Outer Ø 2000 x 3000 mm | – | Bocholt |
| Center lathe (6000 mm distance between centers) | – | 1 | Outer Ø 1800 x 3000 mm | – | Bocholt |
| Lathe | Bulmak 580 | 1 | Center height 290 mm; turning length 1500 mm | 2015 | Bocholt |
| Lathe | Colchester Magnum | 1 | Ø700 mm; center height 320 mm; turning length 2250 mm | – | Bocholt |
| Vertical turret lathe | Jungenthal | 2 | Faceplate diameter 1200 mm; conventional up to Ø2000 mm | – | Bocholt |
| Milling machine | Reckermann Uni 1000 | 1 | Milling length 1000 x 350 mm | – | Bocholt |
| Keyway broaching machine | Frömag | 1 | Keyway width 6-80 mm; stroke height 350 mm | – | Bocholt |
| Radial drilling machine | WMW | 1 | Drilling capacity up to Ø80 mm (brochure: up to diameter 55 mm) | – | Bocholt |
| Vertical bandsaw | Rapid | 1 | Sawing up to Ø300 mm | – | Bocholt |
| Tool presetting device (tool measurement) | Zoller Venturion 600 | 1 | – | 2025 | Bocholt |
| Gas-shielded welding system MIG/MAG | Synmag 4100W | 1 | – | – | Bocholt (welders' hall) |
| Gas-shielded welding system | KDO400 | 1 | – | – | Bocholt (welders' hall) |
| MIG/MAG pulsed welding unit | Fronius | 1 | – | – | Bocholt |
| Gas-shielded welding system | EWM | 1 | – | – | Bocholt |
| Overhead crane | – | 3 | Halls 1-3, up to 10 t each | – | Bocholt |
| Overhead crane (welders' hall) | – | 1 | Hall 4 up to 2.5 t | – | Bocholt |
Additional services
Quality
All components leave production only after thorough quality control; every component is documented and logged with dimensional inspection reports. In-house testing by magnetic particle inspection (Level 2) and dye penetrant testing (Level 1); welders are qualified to ISO 9606-1.
| Evidence | Bocholt |
|---|---|
| ISO 9001:2015 | |
| DIN EN ISO 3834-3:2021 | |
| ISO 14001 | |
| IATF 16949 |
History
- 1969
Founding of the company Bernhard Leiting at Königsesch 14, Bocholt
- 1974
Construction of and move into the first production hall at Robert-Bosch-Straße 26
- 1982
Construction of the second production hall
- 1988
Construction of the third production hall
- 1993
Handover to Dieter Leiting; new company name Leiting GmbH & Co. KG Dreherei und Maschinenbau
- 2008
Purchase of the premises at Robert-Bosch-Straße 23 (storage yard, relocation of the welding department)
- 2020
Acquisition of the company by Florian Messing
- 2025
Certification to ISO 9001:2015 (04/2025); new machine Zoller Venturion 600 (09/2025)