Drilling and Tapping – Contract Manufacturing Lorch
Drilling, countersinking, reaming and threading large parts – drilling diameters up to Ø 90 mm, reach up to 3,000 mm, threads M2 to M60. Steel, Hardox, stainless steel and fine-grain structural steel. Contract manufacturing at our Lorch site in Baden-Württemberg.
Drilling up to Ø 90 mm
Drilling, countersinking and reaming in steel, stainless steel, Hardox.
Threads up to M60
Machine tapping from M2 to M60.
Reach up to 3,000 mm
Hole patterns even deep inside large components, without repositioning.
Working height up to 1,740 mm
Tall, bulky workpieces without repositioning.
Continue processing directly
Welding, machining, blasting, painting in-house.
To drawing · ISO 9001
Documented quality, seamless material traceability.
Drilling and Tapping – Machine Capacity
At Bock, drilling is carried out up to Ø 90 mm – on three heavy radial drilling machines with a freely swivelling drill arm. Drilling, countersinking and reaming are performed in steel, Hardox, stainless steel and fine-grain structural steel. The swivel arm positions the spindle freely over the workpiece – enabling hole patterns even deep inside large-area components, without repositioning.
Bock cuts threads by machine up to M60: The Gamor RHG-3BR automatic tapping machine covers M2 to M48 via its automatic swivel arm; larger threads up to M60 are produced by the radial drilling machines. The reach extends up to 3,000 mm (Raboma 12UH 3000, up to 1,605 mm between spindle and table); for tall workpieces the Invema FR 65 offers up to 1,740 mm with 2,000 mm reach.
The radial drilling machines complement the boring mill and large-part machining. While the portal milling machines and boring mill handle the heavy cutting tasks, the radial drilling machines cover flexible single holes, hole patterns and threads on welded assemblies and large parts. The 2×25 t crane operation ensures the handling of heavy raw parts.
Drilled and threaded components are processed further directly in-house – welded, machined, blasted and painted. Contract manufacturing is carried out in accordance with DIN EN ISO 9001:2015 with seamless material traceability and documented quality assurance.
Machines and dimensions – at a glance
Three radial drilling machines and one automatic tapping machine at the Lorch site:
| Machine | Reach | Spindle–table | Drilling Ø | Thread |
|---|---|---|---|---|
| Raboma 12UH 3000 · Radial drilling machine | 3,000 mm | up to 1,605 mm | up to Ø 90 mm | up to M60 |
| Invema FR 65 · Radial drilling machine | 2,000 mm | up to 1,740 mm | up to Ø 90 mm | up to M60 |
| Kolb HK 80 · Radial drilling machine | 1,600 mm | up to 1,205 mm | up to Ø 80 mm | up to M52 |
| Gamor RHG-3BR · Tapping machine | — | — | — | M2–M48 |
Gamor RHG-3BR automatic tapping machine with automatic swivel arm for M2–M48; threads up to M60 on the radial drilling machines. We check drilling diameter, drilling depth and thread size on a project basis using your drawing – including adapted cutting parameters for Hardox, stainless steel and fine-grain structural steel.
Materials for Drilling and Tapping
The following materials are drilled and threaded:
- Structural steel S235, S355 – hole patterns and threads on steel assemblies
- Fine-grain structural steel S460–S1100 – high-strength connection and joining elements
- Hardox 400 / 500 – holes in wear-protection components
- Stainless steel 1.4301, 1.4571 – drilling and threads in tank and vessel construction
- Special steels to drawing and customer specification
Material certificates are provided on request or in accordance with project requirements.
Typical Applications
Drilling and tapping are used for:
- Hole patterns and mounting threads on welded large assemblies
- Flange, connection and joining holes in plant engineering and steel construction
- Threads M2 to M60 for bolted connections from precision-mechanical to large threads
- Single holes and hole patterns on machine frames and structures
- Rework and holes on purchased or customer-supplied components
Drilled and threaded components are welded, machined and surface-treated directly on site – with no external logistics between the steps. The radial drilling machines with reach up to 3,000 mm achieve hole patterns even deep inside large-area components, and threads from M2 to M60 are produced with process reliability. Drilling, countersinking, reaming and tapping are performed in steel, Hardox, stainless steel and fine-grain structural steel, including high-strength materials with adapted cutting parameters. Quality documentation and material certificates in accordance with DIN EN ISO 9001:2015 are available for all order types. Contract manufacturing without minimum quantities for single parts and small batches. Customer-supplied components are drilled and threaded on request. Short transition to welding, machining and surface treatment in the same facility.
Service Overview Contract Manufacturing and Steel Construction
Drilling and Tapping at Bock – Your Advantages
Bock Maschinenbau offers drilling and tapping as an integrated part of its contract manufacturing:
- Drilling up to Ø 90 mm
- Drilling, countersinking and reaming – maximum drilling diameter on radial drilling machines.
- Threads up to M60
- Machine tapping from precision mechanics to large threads.
- Reach up to 3,000 mm
- Hole patterns even deep inside large-area components – without repositioning.
- Hardox and special steels
- Wear-resistant and high-strength steels are machined with adapted cutting parameters.
- No minimum quantities
- Single parts, prototypes and series parts are manufactured alike.
- DIN EN ISO 9001:2015
- Quality management system with documented material traceability.
Machine and steel builders from the Ostalbkreis, the Stuttgart area and the DACH region outsource drilling, countersinking and tapping on large components to us – radial drilling up to 3,000 mm reach in Lorch.
Frequently asked questions about drilling and tapping
Up to what diameter is drilling carried out, and up to what size are threads cut?
Drilling is carried out up to Ø 90 mm, including countersinking and reaming; threads are cut by machine from M2 to M60. The Gamor RHG-3BR automatic tapping machine covers M2 to M48, while larger threads up to M60 are produced on the Raboma 12UH 3000 and Invema FR 65 radial drilling machines.
What reach and what height do the radial drilling machines achieve?
The Raboma 12UH 3000 achieves 3,000 mm reach with up to 1,605 mm spindle-to-table distance; the Invema FR 65 achieves up to 1,740 mm spindle-to-table distance with 2,000 mm reach. The freely swivelling drill arm positions the spindle over the workpiece, so that hole patterns are produced even deep inside large-area components without repositioning.
How is it decided whether drilling is done on the radial drilling machine or on the boring mill?
Portal milling machines and the boring mill handle the heavy cutting tasks; the radial drilling machines cover flexible single holes, hole patterns and threads on welded assemblies and large parts. Drilling diameter, drilling depth and thread size are checked on a project basis using the drawing.
Can Hardox, stainless steel and fine-grain structural steel be drilled and threaded?
Yes. Drilling, countersinking, reaming and tapping are carried out in steel, Hardox, stainless steel and fine-grain structural steel; wear-resistant and high-strength steels are machined with adapted cutting parameters.
Are customer-supplied components drilled and threaded?
Yes. Customer-supplied components are drilled and threaded on request, as are rework and holes on bought-in components, from single parts to series.
Contact
Request Drilling and Tapping
Send us your drawing with hole pattern, diameters, thread sizes and material. We check feasibility and prepare a quotation.
