Boring Mill & Portal Milling – Zayer Thera W with up to 26 m Travel Path | Contract Manufacturing Lorch
Two Zayer Thera W portal milling machines with a 30° swivel milling head – travel path up to 26,000 mm for exceptionally long and heavy components up to 50 t in a single setup, as contract manufacturing in Lorch with no minimum order quantities.
Travel path up to 26,000 mm
Zayer Thera W 26000 – X 26,000 · Y 5,000 · Z 3,250 mm. One of the largest milling travel paths in the region.
Two portal milling machines
Thera W 26000 and Thera W 16000 – parallel capacity, short lead times and on-time delivery.
30° milling head to 0.001°
Positionable in any position to 0.001° – even complex and hard-to-reach surfaces.
Heavy parts up to 50 t
2×25 t crane system and hall infrastructure for large-format workpieces.
Table up to 26.5 × 4 m
Large clamping surface and rigid roller way with pre-tensioning – clamped stably and vibration-free.
Steel · Hardox · stainless
Structural steel, fine-grain structural steel to S1100, Hardox 400/500 and stainless steel 1.4301/1.4571.
Portal Milling at Bock – what the Zayer Thera W delivers
A portal milling machine guides the milling head within a portal supported on both sides – this provides maximum rigidity for the heavy machining of large-format components. Bock operates two identical Zayer Thera W machines: the Thera W 26000 with a 26,000 mm travel path and the Thera W 16000 with a 16,000 mm travel path.
The 30° milling head is positionable in any position to 0.001°, making complex, angled and hard-to-reach surfaces accessible in a single setup. The stable roller way with adjustably pre-tensioned roller shoes ensures high rigidity and thus high dimensional accuracy – even over very long travel paths.
Two machines mean real capacity: parallel production of multiple orders, short lead times and reliability for time-critical projects. Programming is done from CAD data or drawing dimensions – single parts, prototypes and small batches alike, as contract manufacturing with no minimum order quantities.
The 2×25 t crane runway in the plant enables safe setup of heavy workpieces up to 50 t. After portal milling, components can move directly to boring mill, welding, sandblasting and painting – all in the same plant in Lorch, without external logistics between machining steps.
Machine Data – Zayer Thera W Portal Milling Machines
Core data of the two Zayer Thera W portal milling machines in contract manufacturing at Bock:
| Parameter | Zayer Thera W 26000 | Zayer Thera W 16000 |
|---|---|---|
| X travel (length) | 26,000 mm | 16,000 mm |
| Y travel (width) | 5,000 mm | 4,000 mm |
| Z travel (height) | 3,250 mm | 2,850 mm |
| Table clamping surface | 26,500 × 4,000 mm | 16,500 × 3,000 mm |
| Milling head | 30°, positionable in any position to 0.001° | 30°, positionable in any position to 0.001° |
| Main motor | Heidenhain · 43 kW | Heidenhain · 43 kW |
| Control | Heidenhain iTNC 640 HSCI | Heidenhain iTNC 530 HSCI |
| Guideway | Roller way with adjustable pre-tensioning | Roller way with adjustable pre-tensioning |
We assign the machine that will process your component to suit your requirements. We check specific feasibility and tolerances on a project basis using your drawing.
Typical Applications of Portal Milling
The Zayer Thera W portal milling machines at Bock are used for:
- Base plates and machine beds for heavy machinery engineering
- Beams, frames and cross members for vehicle and crane support systems
- Heavy parts with long flat surfaces and bore rows
- Complex-machined structural parts for plant and special machinery engineering
- Pre-machined blanks as a preparation stage for welded structures
Machined components can be welded, blasted and painted in the same facility. Portal milling in Lorch is particularly suited to large-format machine frames, guideways and structural parts with tight tolerances over long distances – a milling capacity rarely available at comparable contract manufacturers. Quality documentation and dimensional reports to DIN EN ISO 9001:2015 are available as standard.
Materials for Portal Milling
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 are provided on request or according to project requirements.
Services Overview – Contract Manufacturing and Steel Construction
Impressions from Portal Milling
Real shots from our Zayer Thera W machines in Lorch – from the face mill mid-cut and the long workpiece in its setup to the freshly machined mating face, the welded machine frame, the support structure being drilled and the size comparison that makes the dimensions immediately clear.
Portal Milling at Bock – Your Advantages
Bock Maschinenbau operates the portal milling machines as part of a complete manufacturing process:
- Travel path up to 26,000 mm
- Zayer Thera W 26000 – one of the largest milling travel paths in the region.
- Two machines in parallel
- Thera W 26000 and 16000 – capacity, short lead times and reliability.
- 30° milling head to 0.001°
- Complex and hard-to-reach surfaces in a single setup.
- Heavy parts up to 50 t
- 2×25 t crane and hall infrastructure for large-format workpieces.
- DIN EN ISO 9001:2015
- Quality management with documented material traceability.
- Tool arsenal built over decades
- A stock of special tools grown over the years – angle milling heads, special milling cutters and large face mills for complex contours and high material removal.
- Machining for the region
- Large milled parts for machine and special-machine builders from the Stuttgart area and Ostwürttemberg – short distances within the region, shipping as far as Austria and Switzerland.
Frequently Asked Questions about Portal Milling
What is a portal milling machine?
In a portal milling machine, the milling head runs within a portal supported on both sides. This design is particularly rigid and suited to the precise heavy machining of large-format and long components in a single setup.
How large can the components be?
The Zayer Thera W 26000 offers travel paths of X 26,000 · Y 5,000 · Z 3,250 mm and a table clamping surface up to 26.5 × 4 m; the Thera W 16000 X 16,000 · Y 4,000 · Z 2,850 mm. Workpieces up to 50 t are set up using the 2×25 t crane.
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. We provide material certificates on a project basis.
Do you also manufacture single parts?
Yes. Portal milling is carried out as contract manufacturing with no minimum order quantities – single parts, prototypes and small batches alike, programmed from CAD data or drawing dimensions.
Contact
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Request Portal Milling
Send us your drawing, material, dimensions and quantity. We will assess feasibility and provide a project-specific quotation.