Vertical Grinder
VTG4000/1500
Grinding and Hard Turning
Vertical Grinder
The KMT Precision Grinding AB Vertical machines gives the user high output quality and
can be set up for Internal, External hard turning and grinding operations.
Machine concept
Work head spindle/worktable
Hard turning and grinding, in sequence or
simultaneously by two rams:
• KMT Precision Grinding AB’s hydrostatic bearings
Two rams: Mounted on a two columns,
one single beam design.
Machine base: Made in cast iron.
With active close loop cooling system.
Work head: Fixed position work head
spindle/worktable (C2)
for both axial and radial support.
• Rotary magnetic worktable diameter
1500/4 000 mm.
• Magnetic chuck for centric work
piece chucking.
• Direct driven by a torque motor, 20 kW,
step less variable speed.
• Max 75 rpm, 16 kNm (VTG4000)
Machine principles
Grinding/Grinding
Hard turning/Grinding
Grinding/Hard turning
Hard turning/Hard turning
Max 200 rpm, 6 kNm (VTG1500)
• Max load on worktable 10 000 kg (VTG4000)
Max load on worktable 3 000 kg (VTG1500).
HARD TURNING SYSTEM / Right Ram
GRINDING SYSTEM / Left Ram
Slides system:
Vertical right (Z2) & Horizontal right (X2)
KMT Precision Grinding AB’s hydrostatic design.
Linear motor driven hydrostatic slide.
Slides system:
Vertical left (Z1) & Horizontal Left (X1) KMT Lidköping’s
hydrostatic design. Linear motor driven hydrostatic slide.
Vertical stroke:
860 mm / Hydraulic brake.
Vertical stroke:
850 mm / Hydraulic brake.
Horizontal stroke:
3560 mm (VTG4000)
2310 mm (VTG1500)
Horizontal stroke:
3560 mm (VTG4000)
2310 mm (VTG1500)
Max acceleration:
1 m/sec².
Max acceleration:
1 m/sec².
Max speed:
1 m/s.
Max speed:
1 m/s.
Resolution:
0,01µm. X1 & X2 are working independently
of each other.
Resolution:
0,01µm. X1 & X2 are working independently of
each other. Grinding with slides/Ram (X2)/(Z2)
Tool system
Automatic tool changer:
24x
Tool holder:
Sandvik Capto C6 or acc. to customer demand.
Measurments:
Probe for tool control.
Tool monitoring system
Tool probe for workpiece measurement.
Hard turning with slides/Ram (X1)/(Z1)
Automatic tool changing system
External/Internal grinding spindle
HF grinding spindle with support GMN TSE
260C-3500/40. 40 kW. Speed 1900-3500 rpm.
Electro-mechanical balancing and A-E (gap)
by Marposs P7.
Automatic grinding wheel change, OD/ID wheels.
Wheel diameter 610 mm, OD/ID (VTG4000).
Wheel diameter 350 mm, OD/ID (VTG1500).
Wheel width 150 mm, OD/ID (VTG4000, VTG1500).
Max 60 m/s, variable.
Integrated Coolant nozzles for OD & ID.
Swiveling of grinding spindle,
to be quoted on request
Dressing unit for external and internal grinding wheels
The dressing unit is fixed to the machine base.
• Single point dresser
• NC disc dresser
• Full profile dresser
• Radius dresser
Vertical Grinder
Technical data
Machine
VTG1500
VTG4000
Please note that all data stated are correct at time of printing but are subject to change.
Type
Workholding
Internal/
External/
Machine principle
Magnetic
Chucking
Hard Turning
Hard Turning
Work head spindle torque (Nm)
VTG1500
VTG4000
6000
16000
Grinding
Grinding wheel size (mm)
Grinding wheel speed (m/s)
Ø 610 mm
Ø 610 mm
60
60
General
Work head spindle speed (rpm)
200
75
Work height, from floor to
magnetic chuck top face (mm)
400
0
Machine height from
floor level (mm)
4400
4000
Machine depth from
floor level (mm)
2000
Machine weight (kg)
45000
60000
9500x7450
13000x8800
Footprint (mm)
Work Piece Dimension
ID
OD
min Ø 440
max Ø 1450
min Ø 500
max Ø 1500
min Ø 1000
max Ø 3800
min Ø 1300
max Ø 4000
Cooling Water
Cooling water pressure
0,25 MPa
Consumption
140 l/min
Temperature
Ambient
+ 2,5
-
°C
Hydraulic system
Pressure, spindles and slides
90 bar (+5 bar)
Filter
5 µm
Oil temperature
+ 3°
-
Oil
Castrol HYSPIN AWS 22
C of ambient temperature. Within 18-35° C
Coolant
Pressure
0,4 – 0,6 bar
Consumption
300 l/min
Temperature
Ambient
Filter
20 µm
Maximum dirt content
75 mg/l
2600
+ 2,5
-
°C
Pneumatic system
Consumption, average
1200 l free air/min
Pressure
0,5-0,7 MPa
Quality
Class 3.4.4 or less
Exhaust
1800 m3/h
Noice level
75 db (A)
KMT Precision Grinding AB
Fabriksgatan 2, P.O. Box 910, SE-531 19 LIDKÖPING, Sweden
Phone: +46 510 88 000, Fax: +46 510 24 541, Email: [email protected]
www.kmtgroup.com