Reference Number: 142833

14" x 40" KARSTENS CNC UNIVERSAL CYLINDRICAL GRINDER
 MODEL: K28,  MFG.:  1998
 FOR EXTERNAL/INTERNAL GRINDING WITH CONTINUOUS PATH CONTROL
 
 TECHNICAL DATA AND FEATURES:
 Swing:                                          14"
 Distance between Centers:                       40"
 Grinding length:                                40"
 Max.dia. to be ground:                          13.5"
 Electrics:                                      230/460 Volt
                                                3 phase,60Hz
 Total installed power with 10 HP spindle motor: 14.5 HP
 Net weight of machine, approximately:           10,400 Lbs.
 
 WHEELHEAD:
 Grinding Wheel arrangement left hand
 Spindle in anti-friction bearings, life time lubricated.
 Grinding wheel dia.:                             20"
 Grinding wheel width, up to:                     4"
 Grinding wheel bore:                             5"
 Spindle Motor:                                   10 HP
 Grinding wheel speed                             7000 sfpm
 
 Coarse adjustment of wheelhead on air cushion,
 clamping with spring-load, unclamping pneumatically
 (no hand tools required).  Manually swivelling of wheelhead
 after unclamping by operating one lever.
 
 WORKHEAD:
 Live and dead spindle in anti-friction bearings.
 Spindle taper:                                    MT#4
 Spindle bore-front:                               2-1/2"
 Spindle thru bore:                                .945
 Work drive infinitely programmable                25-600 RPM
 Workhead can be swiveled on base plate
 
 TAILSTOCK:
 On air cushion adjustable
 Spindle taper                                     MT#4
 Stroke:                                           1-3/4"
 Manual quill retraction.
 Spring tension adjustable up to:                  176 lbs.
 
 DRESSING DEVICE
 Holder for the dressing tool for diamond with shaft MT 0
 or diamond dressing blade, (without diamond).
 
 KARSTENS-CNC CONTROL TYPE BWO 900
 Modular designed continuout path control
 in powerful RISC-processor technology.
 Axis interpolation possible in different software channels
 Comfortable operation guidance by integrated function keys,
 softkeys and data input by numerical key board.
 Color-LC-Display, VGA graphic mode
 Approaching cycles for automatic setting of reference 
 points, for dressing and grinding cycles.
 NC programming in accordance to DIN 66025 via keyboard
 or data in-and output via serial interface (RS232C).
 
 STANDARD ACCESSORIES:
 Wheel guard for grinding wheels up to 4" wide,
 Wheel drive for 7000 sfpm,
 Grinding wheel flange with grinding wheel 20" dia.
 x 1-1/2" wide x 5" bore,
 Balancing arbor and extractor screw for wheel flange.
 
 Fine setting device for upper table, including dial
 indicator, 
 1 Set of carbide tipped centers MT No. 4,
 1 Set of tools for machine
 1 Instruction/service manual, complete with parts list
 
 
 Equipped with:
 WHEELHEAD BASE
 B-axis
 Angle Position            Programmable
 Drive System              Brushless AC servo motor
 Measuring system          Encoder
 Resolution                0.0001  degree
 
 Workpiece spindle as C-axis,
 interpolation with another main axis
 Encoder Heidenhain
 36,000 impulses per revolution
 Resolution  .018 degree
 
 Wheel guard for second grinding wheel (right side)
 with coolant supply.
 to accomodate grinding wheels 16" x 3.150" x 5"
 grinding wheel wear down to 12" possible.  This would
 offer the option to have a wheel in  degrees for 
 face grinding... grinding length 26"
 
 Rear mounted internal grinding attachment,
 motor rating 3 HP
 Spindle mount for dia. 3.150" x 6.300"
 with reductions for dia. 2.362" 
 and coolant supply,
 (Additional second dressing device essential
 to fully cover machining range /Position 6.203
 
 Internal grinding spindle type UJ 60 x 250R
 (Grease lubricated),
 including operating tools and drive belts
 with 1-1/2" dia. pulley, 15,900 RPM,
 3 grinding arbors,
 and 3 threaded bolts for mounting grinding
 stones 1", 1-3/16" and 1-1/2" dia.
 one collet clamping arbor with one collet 
 1/4" dia
 
 Second dressing device, essential to fully
 cover machine range
 
 Wheel mounted for wheel dia. 20" or 16"
 clamping width 1-3/16" to 3.150", bore 5"
 
 Shock absorbing leveling pads
 
 Automatic Paper Band Filter Unit
 Tank volume 82 gal.
 Filter capacity 36 gal./min.
 
 
 Voltage stabilizer 750 VA for CNC Control
 system to compensate fluctuations in the mains
 exceeding +/- 10%
 
 Halogen work light 70 watt/24 volt, including
 transformer and mounting bracket
 
 Operating Satellite for Karstens CNC Control BWO