---
title: "CNC Heavy Machining up to 26 m – Contract Manufacturing"
description: "CNC heavy machining of 40+ material grades – gantry milling up to 26 m, vertical turning Ø 4,800 mm, heavy parts up to 50 t. Contract, Lorch."
url: "https://bock-gmbh.com/en/services/cnc-heavy-machining/"
language: "en"
index: "https://bock-gmbh.com/en/llms.txt"
---

# 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.
Portal milling and floor-type milling for exceptionally long and large-format components.
Three CNC horizontal boring mills with rotary table – boring, line boring and milling in a single setup.
Turning table for rotationally symmetric heavy parts up to 50 t.
2×25 t crane system and hall infrastructure for all component sizes.
Structural steel, fine-grain structural steel to S1100, Hardox 400/500 and stainless steel 1.4301/1.4571.
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.
Machinery

## Large-part machining: milling, drilling, turning

### 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.
To the machinery

## 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.

### 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.

### 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.

### Vertical lathe turning – Feichter

Vertical turning of rotationally symmetric heavy parts – large flanges, slewing rings, rings and bushings to drawing.

## 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.
Drilling and tapping

## 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.
Certifications

## 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.
Welded Assemblies

## Impressions from CNC Heavy Machining

Real shots from machining in Lorch – from the boring tool in the spindle and the milling cutter in the floor-type milling-boring center, through the large ring clamped on the vertical lathe table, to the face-milled flange surface with its drilled bolt circle.
More from our production: Milling & Boring · 26 images

## 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
- 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.
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.
Contact

## Frequently asked questions about heavy machining

### How large may the components be?

URL: https://bock-gmbh.com/en/services/cnc-heavy-machining/#faq-gross-bauteile-sein

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.
Zayer Thera W portal milling

### Which machining processes does heavy machining cover?

URL: https://bock-gmbh.com/en/services/cnc-heavy-machining/#faq-bearbeitungsverfahren-umfasst

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.
Soraluce floor-type milling centre

### Which materials are machined?

URL: https://bock-gmbh.com/en/services/cnc-heavy-machining/#faq-werkstoffe-bearbeitet

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.
CNC horizontal boring mill

### Do you also manufacture single parts?

URL: https://bock-gmbh.com/en/services/cnc-heavy-machining/#faq-fertigen-einzelteile

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.
Insights into production and machinery

### Do you have special tooling for unusual machining operations?

URL: https://bock-gmbh.com/en/services/cnc-heavy-machining/#faq-verfuegen-spezialwerkzeuge

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.

## CNC Machinist – Milling & Boring Mill (m/f/d)

CNC Machinist – Milling & Boring Mill (m/f/d) — As a CNC Machinist (m/f/d), you will mill, drill and line-bore large components up to 26 m in length and 50 t in unit weight – on two gantry milling machines, a travelling-column milling centre and three horizontal boring mills at our site in 73547 Lorch, Ostalbkreis, near Schwäbisch Gmünd.

## Request CNC Heavy Machining

Send us your drawing or 3D model with tolerances and quantity. We decide which machines the part is made on – on request including welding, blasting and painting in the same plant.

### Alexander Schulz

For new enquiries, quotations and technical questions on the feasibility of your project.

### Jochen Hack