Internal Grinding Machine

BWF SIU 3

Especially suitable for grinding processing, drilling, and flat surfaces for customized parts (e.g. various disc carriers)

TECHNICAL DETAILS
Center height: 1,180 mm
Max. grinding-flat surface: Ø 200 mm
Max. grinding depth: 70 mm
Closable bore: max. Ø 250 mm
Max. distance front edge workpiece spindle – grinding wheel mount: 250 mm
Max. workpiece weight + clamping device: 150 kg

X-axis: 350 mm
Z1-axis: 530 mm
Controller: CNC Sinumerik 840 D

Spindle speeds
Main spindle (stepless): up to 12,000 rpm

Workpiece spindle speeds
Workpiece spindle (stepless): up to 1,100 rpm

Grinding spindle
Type: 170 EGV 12-20 T
Tool holder: Ø 170 mm
Screw thread: M36 x 2
Swivel range: 3° fixed position

Workpiece spindle
Spindle head: similar to DIN 55026 / Z7
Type: A6
Spindle clearance (without collet): Ø 46 mm
Cylinder correction: ± 5 min

Axis drives
X1-axis (Siemens 1 FT6 062): 5.0 kW / 3.4 A / 3,000 1/min / protection class IP 65
Z1-axis (Siemens 1 FT6 064): 7.9 kW / 5.2 A / 3,000 1/min / protection class IP 65
S1-axis workpiece spindle (Siemens 1 FT6 084): 16.2 Nm / 11.3 A / 3,000 1/min / protection class IP 65

Feed rates
X1-axis: 9,000 mm/min
Z1-axis: 18,000 mm/min

MACHINE DETAILS
Required floor space: 7,800 x 5,200 x 3,400 mm
Machine weight: 5,000 kg

Drive
Total connection value: 45 kVA
Total power requirement: 45 kVA
Supply voltage: 400 V
Frequency: 50 Hz

Coolant requirement
Coolant quantity (process cooling): 100 l/min
Pressure: 2.0 bar

Noise level
Sound level: 75 dB(A)

EQUIPMENT
- Line portal (Felsomat)
- Oval cycle buffer (EWAB)
- Hydraulic unit according to DIN
- Special chuck (Röhm)
- Turbo dressing spindle (EFESIS)
- Air cleaner D2000 (IFS)