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TBT Tiefbohrtechnik GmbH + Co BW250-T

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

The BW250-T is a deep hole drilling and milling center with two separate spindles for deep hole drilling and milling operations. The machining units are equipped with an additional common travel axis, allowing even smaller workpieces to be machined from four sides on the clamping table without resetting.

Drilling and Milling Unit Information:
- Number of spindles: 1 drilling spindle and 1 milling spindle
- Spindle speed infinitely variable: 0 - 5000 rpm
- Spindle drive power: 17 kW at 100% duty cycle S1 operation
- Torque: 260 Nm at 100% S1 operation
- Max. drilling depth: 1500 mm (in one pass without repositioning)
- Drilling diameter: 4 - 40 mm based on ST 60

Travel Paths:
- X-axis travel: 2500 mm
- Y-axis travel: 1500 mm
- Z-axis travel: 850 mm
- V-axis travel: 1000 mm

Feed rates:
- X-axis speed: 10000 mm/min
- Y-axis speed: 10000 mm/min
- Z-axis speed: 6000 mm/min

Swivel Axis Setup for Drilling and Milling Unit:
- The drilling and milling unit has a horizontal swivel range of -25° / +15°

- 3x steady rests

Fluid Information:
- Coolant supply: deep hole drilling oil
- Tank capacity: 2400 liters

- 1x hinge belt chip conveyor

- 1x hydraulic power unit and pneumatic unit/equipment
- 1x central lubrication

- 1x low-pressure pump:
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Pump output: 100 l/min
Pump drive: 5.5 kW

- 1x compact band filter:
Filter output: 175 l/min
For operations in: steel/non-ferrous metals

- 1x radial piston pump with remote adjustment:
Delivery rate: 2 - 120 l/min
Pump drive: 11 kW

- 1x oil mist extraction,
Extraction capacity: 2400 m³/h

Tool magazine for conventional tools
consisting of:
- Tool change magazine with intermediate gripper
- Tool holder HSK 63
- Max. permitted tool diameter: 127 mm
- Max. permitted tool length: 400 mm
- Tool storage spaces: 40

Clamping table with X-axis and NC rotary table:
- Length/width: 1600 x 2000 mm
- Useful load (centered): 15 t
- Swing diameter for workpieces: 2800 mm

Measuring Equipment
- Tool breakage monitoring and length measurement of the BCM tools with automatic compensation in the control system

Electrical Equipment Information:
- 1x CNC control TNC 640 Failsafe Heidenhain
- 1x drilling process monitoring
- 1x remote maintenance
- 1x dynamic collision monitoring
- 1x handheld control device

Connection Data:
- Operating voltage: 3AC 400V ±10% - Frequency: 50 Hz
- Control voltage: 24 V DC
- Total connected load: 65 kW

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