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Zema Numerika Schleifmaschine
NUMERIKA

NUMERIKA - Cylindrical grinding machines

First-Class Shaft Grinding

Versatile, rugged, long-life – the cylindrical grinding machines of the NUMERIKA series meet any requirements for the series production of a broad range of workpieces; in the largest version up to a length of 1.500 mm. A torsion-resistant machine bed, hydrostatic guides and grinding spindles with roller or hydrostatic bearings provide for perfect grinding results. External and internal cylindrical grinding from small to large batches.

Highlights

  • Precise grinding with corundum
  • External and internal grinding
  • High productivity through short cycle time
  • Flexibility when grinding workpiece families
  • Automatic loading and unloading systems adapted to customer requirements
  • High degree of automation for integration in production lines
  • In-process and/or post-process measurement
  • Rugged machine bed with full-protection hood
  • CNC control system with user-friendly interface

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Technical data: NUMERIKA GL 600

Grinding Length
600 mm
Clamping Length
800 mm
Center Height
140 mm
Component Weight
80 kg
Grinding Wheel Diameter
406 x 152 mm
Swing Diameter
275 mm
WxDxH mm (without peripherals)
2905 x 2045 x 2040
Weight
5.000 kg

Wheelhead NUMERIKA GL 600

  • OD1
  • OD1
  • UN1

Technical data: NUMERIKA GL 1200

Grinding Length
1.200 mm
Clamping Length
1.400 mm
Center Height
140 mm
Component Weight
120 kg
Grinding Wheel Diameter
406 x 152 mm
Swing Diameter
275 mm
WxDxH mm (without peripherals)
3745 x 2045 x 2040
Weight
6.000 kg

Wheelhead NUMERIKA GL 1200

  • OD1
  • OD1
  • UN1

Technical data: NUMERIKA G 800

Grinding Length
800 mm
Clamping Length
900 mm
Center Height
140 (230) mm
Component Weight
120 kg
Grinding Wheel Diameter
508 x 203,2 mm
Swing Diameter
275 (450) mm
WxDxH mm (without peripherals)
3730 x 1960 x 2000
Weight
6.500 kg

Wheelhead NUMERIKA G 800

  • OD1
  • OD1
  • UN1

Technical data: NUMERIKA G 1500

Grinding Length
1.500 mm
Clamping Length
1.600 mm
Center Height
140 (230) mm
Component Weight
180 kg
Grinding Wheel Diameter
508 x 203,2 mm
Swing Diameter
275 (450) mm
WxDxH mm (without peripherals)
4.430 x 1.960 x 2.000
Weight
8.000 kg

Wheelhead NUMERIKA G 1500

  • OD1
  • OD1
  • UN1

Technical data: NUMERIKA G 2000

Grinding Length
2.000 mm
Clamping Length
2.100 mm
Center Height
140 (230) mm
Component Weight
250 kg
Grinding Wheel Diameter
508 x 203,2 mm
Swing Diameter
275 (450) mm
WxDxH mm (without peripherals)
5.130 x 1.960 x 2.000
Weight
9.000 kg

Wheelhead NUMERIKA G 2000

  • OD1
  • OD1
  • UN1

Technical data: NUMERIKA G 800 Plus

Grinding Length
800 mm
Clamping Length
900 mm
Center Height
230 mm
Component Weight
120 kg
Grinding Wheel Diameter
610 x 203,2 mm
Swing Diameter
450 mm
WxDxH mm (without peripherals)
3730 x 1960 x 2000
Weight
6.500 kg

Wheelhead NUMERIKA G 800 Plus

  • OD1
  • OD1
  • OD6

Technical data: NUMERIKA G 1500 Plus

Grinding Length
1.500 mm
Clamping Length
1.600 mm
Center Height
230mm
Component Weight
180 kg
Grinding Wheel Diameter
610x 203,2 mm
Swing Diameter
450mm
WxDxH mm (without peripherals)
4430 x 1960 x 2000
Weight
8.000 kg

Wheelhead NUMERIKA G 1500 Plus

  • OD1
  • OD1
  • OD6

Technical data: NUMERIKA G 2000 Plus

Grinding Length
2.000 mm
Clamping Length
2.100 mm
Center Height
230mm
Component Weight
250 kg
Grinding Wheel Diameter
610x 203,2 mm
Swing Diameter
450mm
WxDxH mm (without peripherals)
5130 x 1960 x 2000
Weight
9.000 kg

Wheelhead NUMERIKA G 2000 Plus

  • OD1
  • OD1
  • OD6

Technical data: NUMERIKA GH 500

Grinding Length
500 mm
Clamping Length
600 mm
Center Height
230 mm
Component Weight
150kg
Grinding Wheel Diameter
760 (915) x 304,08 mm
Swing Diameter
450 mm
WxDxH mm (without peripherals)
3660 x 3150 x 2425
Weight
11.000 kg

Wheelhead NUMERIKA GH 500

  • OD1
  • OD1

Technical data: NUMERIKA GH 1000

Grinding Length
1000 mm
Clamping Length
1200 mm
Center Height
230 mm
Component Weight
250 kg
Grinding Wheel Diameter
760 (915) x 304,8 mm
Swing Diameter
450 (650) mm
WxDxH mm (without peripherals)
4160 x 3150 x 2425
Weight
13.000 kg

Wheelhead NUMERIKA GH 1000

  • OD1
  • OD1

Technical data: NUMERIKA GH 1500

Grinding Length
1.500 mm
Clamping Length
1.700 mm
Center Height
230 mm
Component Weight
250 kg
Grinding Wheel Diameter
760 (915) x 304,8 mm
Swing Diameter
450 (650) mm
WxDxH mm (without peripherals)
4660 x 3150 x 2425
Weight
15.000 kg

Wheelhead NUMERIKA GH 1500

  • OD1
  • OD1

Equipment and Options

CONTROL SYSTEM
  • Fanuc (standard) or Siemens (option)
  • Easy programming, installation and operation of the machine
  • Ergonomic machine setup through the machine control in a pivotable and movable control panel
Wheelhead
  • Insensitive to vibrations and low maintenance thanks to spindle mounted on hydrostatic bearings
  • Peripheral speed: 45 (63) m/s
  • Different wheelhead versions (fixed or can be swiveled) for straight or angular plunge cuts (0° – 30°) as well as extrernal and internal grinding
  • Automatic compensation of grinding wheel diameter after dressing
  • Grinding spindles with dynamic balancing system and acustical monitoring
WORKHEAD
  • Universal operation with either dead or live center
  • Rolling or hydrostatic bearings
  • Speed programmable in a range from 20 to 1,000 rpm
  • Maximum permissible workpiece weight: 80 – 250 kg
TAILSTOCK
  • Hydraulically controlled tailstock sleeve with adjustable axial pretension
  • Precision adjustment of taper ± 0.15 mm
  • CNC-controlled positioning of the tailstock (optional) for rapid machine retooling
MACHINE BED
  • With gray cast iron design
  • High torsional rigidity and good damping behavior
  • Proven quality
MEASURING
  • Measurement systems are adapted to the workpieces and customer specifications
  • In-process measurement device for measuring smooth or interrupted external diameters
  • Large diameter measuring range possible
DRESSING UNIT
  • Single-grain diamond or dressing fleece (standard)
  • Rotating dressing (optional):
  1. Diamond profile grinding wheel
  2. Diamond shape roller
POSITIONING
  • Automatic recording of reference surfaces on the clamped workpiece through bidirectional positioner
  • Recorded values are automatically integrated into the grinding process
  • Retractable integration on the wheelhead
  • Touch-trigger probe for precise workpiece detection
HYDROSTATIC BEARINGS
  • Use in radial and axial bearings of wheelheads and workheads
  • Perfect rotational movement and constant centering of shaft
  • Vibration-damping
HYDROSTATIC GUIDE
  • Use in the X and Z-axis, designed as compound slide rests
  • Uniform, jolt-free movement (no stick-slip effect)
  • Drive via servomotors with absolute encoders
  • High-precision positioning for precise grinding results

Workpieces

  • Axle arch
  • Axle
  • Starter shaft
  • Drive shaft
  • Countershaft
  • Bolt
  • Bushing
  • Excentric shaft
  • Gear shaft
  • CV joint
  • Piston pin
  • Piston ring
  • Compressor shaft
  • Motor shaft
  • Pump piston
  • Pump pinion
  • Pinion shaft
  • Pipe
  • Roller Bearings
  • Rotor
  • Worm wheel
  • Worm shaft
  • Spindle
  • Rod
  • Stator shaft
  • Stud
  • Tripods
  • Turbine shaft
  • Turbocharger
  • Cylinder
  • Rolling element
  • Shaft
  • Tool holder
  • Tool Blank
  • Gearwheel
  • Gear rod
  • Spigot
  • Cylinder rollers
  • Cardan joint

Product Brochures NUMERIKA

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