CNC CYLINDRICAL GRINDERS

  • CNC Cylindrical Grinders for between centers and chucking operations. The machines are available with a choice of straight wheelhead or angular slide wheelhead.
  • Heavily ribbed box-type base made in Meehanite casting. Optimum distance between the guideways offers excellent table support to increase Z axis positioning accuracy and repeatability.
  • Rigid-designed workhead with precision bearings and variable spindle speeds. Workhead swings 90º CCW and 30º CW.
  • Strong casting tailstock is designed to mount MT3/MT4 or optional MT5. Optional hydraulic tailstock with pedal is available.
  • The wheelhead runs on double V guideways hand scraped with Turcite coating by a AC FANUC servo motor,0.001linear feedback and precision ballscrew.
  • Wheel Spindle with a combination of hydrostatic and hydrodynamic bearings surrounded by a high pressure oil film eliminates metal to metal contact.
  • Box type rigid work table travelling on a cushion of oil. The table is fully supported in the full travel avoiding overhang. Z-axis positioning accuracy is assured with an AC FANUC servo motor and high precision ball screws.
  • Internal grinding attachment (optional) swings down into working position for easy and quickly internal grinding operation. Except angular slide wheelhead machines.
  • The machines can be customized with a wide selection of systems for automation as electronic probe, automatic OD sizing, dynamic wheel balancing, etc.
  • FANUC control with programs for standard applications.
DESCRIPTION / MODEL G25A-35CNC G32A/G38A/G45A-35/50/80/120CNC G25P-50CNC G32P/G38P/G45P-50/60/75/100/150/200CNC
General Capacity
Distance between centers 350 350/500/800/1200 500 500/600/750/1000/1500/2000
Swing over table 250 320/380/450 250 320/380/450
Max. grinding diameter 250 300/360/430 250 300/360/430
Max. load held between centers 80 kgs 150 kgs 80 kgs 150 kgs
Grinding wheel
Diameter x width x bore 510 x 50 x 127 510 x 50~100 x 152.4 455 x 50 x 127 510 x 50~100 x 152.4
Wheel speed 1650 rpm 1390 rpm 1650 rpm 1390 rpm
Max. peripheral speed 1800 m/min 2220 m/min 1800 m/min
Wheelhead
Sliding angle 90° 60° 90°
Max. increment speed 6 m/min 10 m/min 6 m/min
Infeed travel 160 225 160 225
Min. increment infeed 0,001
Workhead
Spindle speed (variable) 50~500 rpm 30~350 rpm 50~500 rpm 30~350 rpm
Center taper MT 3 MT 4 (opt. MT 5) MT 3 MT 4 (opt. MT 5)
Spindle type Fixed & Rotary
Diameter of bore 20 23 20 23
Tailstock
Center taper MT 3 MT 4 (opt. MT 5) MT 3 MT 4 (opt. MT 5)
Quill travel 25
Table
Rapid feedrate 8 m/min 10 m/min 8 m/min 10 m/min
Min. increment infeed 0,001
Swivelling angle CCW 9° 7° 5° 9° 7° 5° 3°
Motor
Wheel spindle motor 7.5 HP 7.5 HP (opt. 10 HP) 5 HP 7.5 HP (opt. 10 HP)
Workhead motor 1/2 HP 2 HP 1/2 HP 2 HP
Coolant pump 1/8 HP 1/4 HP 1/8 HP 1/4 HP
Hydraulic pump 1 HP 2 HP 1 HP 2 HP
Lubrication pump 1/4 HP
Wheel (X-axis) motor FANUC 1.2 kW
Wheel (Z-axis) motor FANUC 1.2 kW 1.2 kW - 1.8 kW
Machine
Net weight (semi enclosure) 3100 kgs 5200/5600/5800/5800/6300 kgs 3100 kgs 5200/5600/5800/5800/6300/6700 kgs
Gross weight 3500 kgs 5600/6420/7000/7500/7800 kgs 3500 kgs 5600/6420/7000/7500/7800/8200