BTA Deep Hole Drilling Machine ZK21150*D/1500

The processing employs BTA (internal chip removal) methodology utilizing a FANUC OI Mate TC CNC system. The drill stem operates with rotary and feed motions, controlled by variable frequency speed adjustment. The workpiece spindle features CNC indexing and is lockable during drilling operations. Hydraulically driven guide sleeves, paired with hydraulic clamping mechanisms (including a hydraulic chuck and center frame), facilitate precise drilling of concentric and indexing holes.

Drilling Ability
1. Number of Spindle: 1 PCS
2. Drilling Diameter Range: φ40～φ80 mm Reamed Hole Diameter: φ150mm
3. Max. Drilling Depth: 1500 mm
4. Max. Clamping Length Range: 2000 mm
5. Max. Clamping Diameter of Chuck: φ1250mm Clamping Diameter of Center Frame: φ100～320mm; φ300～680mm
6. Moving Distance of Hydraulic Head: 300mm
7. Indexed Hole Diameter: φ600mm
Drilling Speed
1. Max. Drill Stem Rotary Speed: 650 r/min
2. Feed Speed Range: ≤200 mm/min
3. Fast Move Speed ≤2000 mm/min
Drilling Accuracy
1. Skewness: ≤1.0/1000 (length to diameter ratio <100)
2. Dimensional Accuracy: ≤IT12
3. Roughness: ≤Ra3.2
4. Indexing Accuracy: ±1′
5. Rotary Accuracy: ±3′
Machine Power
1. Power of Drill Stem Motor: 37 KW
2. Oil Cooling Power: 3.5 KW
3. Oil Pump Motor: 2×18.5 KW (double pump group)
4. Power of Feed Motor: 2.5 KW
5. Indexing Servo Motor Power: 2.5KW
Hydraulic System
1. Max. Flow: 450 L/Min
2. Max. Pressure: 5 MPa
3. Filter Accuracy: 20 um
4．Oil Tank Capacity: 2400 L
Basic Dimension & Weight
1. Ground Area: 7000×3500×2250mm
2. Distance between Drill Stem Center and Ground: 1600mm
3. Weight of Main Engine: 16 T
4. Weight of Hydraulic System: 3 T