CNC Heavy Machining of 40+ Material Grades up to 26 m – Contract Manufacturing Southern Germany
CNC heavy machining for heavy parts up to 50 t – portal milling, floor-type milling, horizontal boring mills and vertical lathe turning under one roof, in steel, Hardox and stainless as contract manufacturing in Lorch.
Milling up to 26,000 mm
Portal milling and floor-type milling for exceptionally long and large-format components.
Boring mill machining
Three CNC horizontal boring mills with rotary table – boring, line boring and milling in a single setup.
Vertical lathe Ø 4,800 mm
Turning table for rotationally symmetric heavy parts up to 50 t.
Heavy parts up to 50 t
2×25 t crane system and hall infrastructure for all component sizes.
Steel · Hardox · stainless
Structural steel, fine-grain structural steel to S1100, Hardox 400/500 and stainless steel 1.4301/1.4571.
DIN EN ISO 9001:2015
Quality management with documented material traceability.
CNC Heavy Machining – all processes under one roof
Heavy machining at Bock means milling, boring, line boring and turning of components that are too large, too long or too heavy for standard machines – up to 26,000 mm in length and 50 t. Portal milling, floor-type milling, horizontal boring mills and vertical lathe turning interlock within the same facility, so complex workpieces are machined completely without external logistics.
Which machine will process your component we determine based on your specification – this assignment is part of our manufacturing expertise and takes the selection off your hands entirely. For every task the right machine is available; this reduces setup and re-clamping operations and secures tight positional tolerances even over large distances.
Programming is done from CAD data or drawing dimensions – single parts, prototypes and small batches alike, as contract manufacturing with no minimum quantities. The 2×25 t crane runway secures the setup and positioning of all large parts; dimensional reports, first-article inspection and material certificates are provided per project in accordance with DIN EN ISO 9001:2015.
After machining, large parts are handed over directly for welding, shot blasting and painting – complete single-source manufacturing, without external logistics between the machining steps.
Video
CNC large-part machining on video
A live look at the heavy machining of large-format components in Lorch – chip removal, spindle and precision on heavy parts up to 50 t. Tap the video to play with sound.
Components up to 50 t
Travels up to 26,000 mm in length – large parts that are too big, too long or too heavy for standard machines, in just a few set-ups.
All processes under one roof
Gantry milling, travelling-column milling, horizontal boring mills and vertical turning interlock within the same operation – without external logistics between the steps.
Contract manufacturing to DIN EN ISO 9001
Single parts, prototypes and small batches with no minimum quantities – with dimensional report, first-article inspection and material certificate.
The machines of heavy machining
Four machine groups for the machining of large parts – each with its own strength profile:
Portal milling – Zayer Thera W
Two portal milling machines with 30° swivel milling head and portal supported on both sides – maximum rigidity for long, large-format components.
Travel up to 26,000 mm · up to 50 t
View machine
Floor-type milling centre – Soraluce FR 20,000
Floor-type machine with swivel milling head and rotary table – work envelope open at the top for bulky, tall heavy parts.
X 20,000 mm · rotary table 2.5 × 2.5 m
View machine
CNC horizontal boring mill – TOS-Varnsdorf WHN 13
Three identical boring mills with Ø 130 mm boring spindle and rotary table – boring, line boring, milling and thread cutting in a single setup.
Ø 130 mm spindle · 3 machines
View machine
Vertical lathe turning – Feichter
Vertical turning of rotationally symmetric heavy parts – large flanges, slewing rings, rings and bushings to drawing.
Ø 4,800 mm · up to 50 t
View machine
Special tooling – a tool arsenal built 63 years
Large machines alone do not finish a part – what matters is the tool in the spindle. In 63 years of contract manufacturing, Bock has built up an exceptionally deep stock of tools and special tooling. This arsenal, grown over decades, is a genuine competitive advantage: it makes us independent of lengthy special-tool procurement and enables machining operations that many contract manufacturers have to outsource or turn down.
- Long boring and back-boring bars for deep bores and line-bored bearing seats
- Angle milling heads for hard-to-reach faces and multi-side machining
- Special milling cutters and large face mills for unusual contours and high material removal
- Special drills, taps and thread-cutting tools up to large dimensions
- In-house holders, clamping and workholding fixtures for bulky and heavy workpieces
- Calibrated measuring and inspection equipment for dimensional control of large geometries
This is what makes Bock so versatile – whether an unusual geometry, a deep bore or a hard-to-reach face: in most cases the right tool is already in-house. That shortens setup and procurement times and widens the range of parts we can manufacture economically.
Materials for CNC Heavy Machining
Bock uses predominantly European quality steels:
- Structural steel S235, S355 – Standard structural steel
- Fine-grained structural steel up to S1100 – high-strength, weldable
- Hardox 400 / 500 – wear-resistant steel for high-stress components
- Stainless steel 1.4301, 1.4571 – corrosion-resistant
- Special steels to drawing and customer specification
Material certificates and test reports are provided per project.
Typical Applications
CNC heavy machining at Bock is used for:
- Base plates, machine beds and structural beams
- Flanges, rings and bushings for heavy-duty applications
- Beams and cross members for crane and vehicle systems
- Complex components for plant and special machinery construction
- Post-machined welded structures and welded assemblies
Manufactured components can be welded, blasted and painted in the same facility – complete single-source manufacturing without external logistics between the machining steps. The 2×25 t crane system secures handling across all production areas. Requirements from crane construction, vehicle construction and plant engineering are met through DIN EN ISO 9001:2015, dimensional reports and material certificates – single parts, prototypes and small batches with no minimum quantities.
CNC Heavy Machining at Bock – Your Advantages
Bock Maschinenbau operates heavy machining as part of a complete manufacturing process:
- All processes under one roof
- Portal milling, floor-type milling, boring mills and vertical lathe turning interlock.
- Components up to 26 m / 50 t
- Travels up to 26,000 mm and 2×25 t crane for the largest workpieces.
- The right machine per component
- We take on the machine assignment according to your specification entirely.
- Contract manufacturing, no minimum order
- Single parts, prototypes and series parts are manufactured alike.
- DIN EN ISO 9001:2015
- Quality management with documented material traceability.
- Tool arsenal built over decades
- A stock of special tools and tooling grown over 63 years – for almost any geometry, the right tool is already in-house.
- More than 20 machines in-house
- Seven large CNC machining centres plus the full spectrum beneath them – from the 26 m portal-milling centre down to the conventional lathe, all under one roof.
- Large parts for the region
- Machine and plant manufacturers from the Stuttgart area, the entire DACH region and across Europe have their heavy parts up to 50 t milled, turned and bored at our facility in Lorch – all from a single source.
Frequently asked questions about heavy machining
How large may the components be?
The milling travels reach up to 26,000 mm (Zayer Thera W portal milling machines); via the 2×25 t crane, workpieces up to 50 t are set up. Vertical lathe turning is possible up to Ø 4,800 mm. Which machine processes your component we assign to suit your requirements.
Which machining processes does heavy machining cover?
Portal milling and floor-type milling, boring mill machining (boring, line boring, milling, thread cutting) as well as vertical lathe turning – all in the same facility, complemented by welding, shot blasting and painting.
Which materials are machined?
Structural steel S235/S355, fine-grain structural steel to S1100, Hardox 400/500 as well as stainless steel 1.4301/1.4571 and special steels to drawing. Material certificates we provide per project.
Do you also manufacture single parts?
Yes. Heavy machining is carried out as contract manufacturing with no minimum quantities – single parts, prototypes and small batches alike, programmed from CAD data or drawing dimensions.
Do you have special tooling for unusual machining operations?
Yes. Over 63 years, Bock has built up a deep stock of tools and special tooling – long boring and back-boring bars, angle milling heads, special milling cutters, special drills and thread-cutting tools as well as in-house holders and measuring equipment. This lets us machine unusual geometries, deep bores and hard-to-reach faces without depending on lengthy special-tool procurement.
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