NUMERIKA

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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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GL 600

GL 1200

G 800

G 1500

G 2000

G 800 Plus

G 1500 Plus

G 2000 Plus

GH 500

GH 1000

GH 1500

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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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):

Diamond profile grinding wheel

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

Product Brochures NUMERIKA

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