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
- Fine-grain structural steel to S1100 – high-strength, weldable
- Hardox 400 / 500 – wear-resistant steel
- 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
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.