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TBT Tiefbohrtechnik GmbH + Co BW250-T

The drilling method of the deep hole drilling machine is single-lip (gun drilling).

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

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

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

Traversing speed:
- X-axis speed: 10,000 mm/min
- Y-axis speed: 10,000 mm/min
- Z-axis speed: 6,000 mm/min

Swivel axis device for drilling and milling unit:
- The drilling and milling unit has a horizontal swivel range of -25° / +15°

- 3x steady rest

Fluid management:
- Coolant supply: deep drilling oil
- Tank capacity: 2,400 liters

- 1x hinge belt chip conveyor

- 1x hydraulic unit and pneumatic unit/equipment
- 1x centralized lubrication system

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

- 1x compact band filter:
Filter throughput: 175 l/min
for machining: steel/non-ferrous

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

- 1x oil mist extraction system,
Extraction capacity: 2,400 m³/h

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

Clamping table with X-axis and NC rotary table:
- Length/width: 1,600 x 2,000 mm
- Payload (centered): 15 t
- Swivel circle for workpieces: 2,800 mm

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Measuring systems
- Tool breakage monitoring and tool length measurement for BCM tools with automatic offset calculation in the control

Electrical Equipment:
- 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: 24V DC
- Total connected load: 65 kW

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