Deephole boring machine

TBT Tiefbohrtechnik GmbH + Co ML200-2-800

The machine was equipped with a new machine control system in 2024 and underwent a complete mechanical overhaul in 2025.
The extensive overhaul involved the replacement of almost all essential components.
As a result, the machine is in almost new condition technically.

New control system in 2024:
- SIMATIC S7-1500 PLC control system
- SINAMICS S120 drive system

Mechanical overhaul in 2025:
- New tailstock housing, drill bush holder, and spindle housing
- New workpiece support and tool support

- 2x high-frequency spindles
- 2x tool holders
- 2x rotating collet chucks

- Quill, including bearing
- Ball screw drive, including bearing
- Linear guides

- Radial piston pump
- Water cooler
- 2x drilling oil supply
- Flow divider

- Pipelines and hoses replaced
- Various filters replaced
- Complete repainting

Optional:
- Chip conveyor can be retrofitted

Oil mist extraction:
- Connections are available

Tool accessories:
- Individual design possible according to customer requirements/customer workpiece.

The deep hole drilling machine uses the single-lip drilling process.

Information on the drilling unit:
- Drilling diameter min/max: 1-12 mm based on ST 60
- Drilling depth: approx. 400 mm
- Number of spindles: 2
- Spindle spacing: 120 mm
- Spindle drive: 2 x 3.5 kW
- Spindle speed, continuously variable: 1000 - 20000 1/min
- Feed rate, continuously variable: 10 - 15000 mm/min
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- Rapid traverse: 15000 mm/min
- Slide stroke (nominal): 800 mm
- Center height (above table): 100 mm
- Coolant supply: Deep hole drilling oil

Machine frame:
- Welded construction with integrated coolant tank
- Top of the frame with continuous linear guide rails

Spindle unit:
- Motor spindles with frequency-controlled, continuously variable speed control.
- Spindle head with connection for tool holder.

Drill bush holder:
- In cast design, fixed on the machine bed.
- Holder for tool guidance system with Ø50 mm
- Holder for sealing housing and immersion sleeves with bayonet lock

Rotating tailstock:
- With drive for rotating workpiece
- Clamping quills with workpiece length compensation

Inspection of the machine and further information are available on request.

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