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NUMERIKA

Product catalog summary

Overview: The Numerika series of cylindrical grinding machines by ZEMA are designed for first-class shaft grinding, offering versatility, durability, and long life. These machines are suitable for series production of a wide range of workpieces, with the largest version accommodating lengths up to 3.70 meters. Key features include a torsion-resistant machine bed, hydrostatic guides, and grinding spindles mounted on rolling or hydrostatic bearings for optimal grinding results.

Specifications: The machines feature a rugged machine bed with a full-protection hood, a CNC control system with a user-friendly interface, and are equipped with hydrostatic bearings for vibration damping. The peripheral speed is 45 (60) m/s, and the machines offer different wheelhead versions for straight or angular plunge cuts. The tailstock sleeve is hydraulically controlled with adjustable axial pretension, and precision adjustment of taper is ± 0.15 mm.

Control System: The machines use either Fanuc (standard) or Siemens (optional) control systems, with software developed specifically for external cylindrical grinding. The control panel is ergonomic and can be pivoted and moved for easy machine setup.

Applications and Advantages: The Numerika series is designed for precise grinding with corundum, offering high productivity through short cycle times and flexibility for grinding workpiece families. The machines support automatic loading and unloading systems, high degrees of automation for production line integration, and in-process or post-process measurement capabilities.

Equipment and Options: The machines are equipped with a dynamic balancing system for the grinding spindle, post-process measuring systems, exhaust-air purification systems, and coolant systems. Options include different dressing units and measuring systems adapted to customer specifications.

Technical Data: The machines support workpiece weights from 80 to 350 kg, with programmable speeds ranging from 20 to 1,000 rpm. The grinding wheel diameter ranges from 406 x 152 mm to 760 (915) x 304.8 mm, with motor outputs from 5.5 (7.5) kW to 30 (45) kW. The machines' dimensions and weights vary across models, with total weights ranging from 5,000 kg to 23,000 kg.

Contact Information: ZEMA and Erwin Junker have multiple offices worldwide, including locations in Brazil, Mexico, China, India, the USA, Czech Republic, Russia, Turkey, and Germany. Contact details for each location are provided for further inquiries.

Catalog excerpts

NUMERIKA CYLINDRICAL GRINDING

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ADVANTAGES • Precise grinding with corundum • 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 • Recording of error messages • Rugged machine bed with full-protection hood • CNC control system with user-friendly interface Versatile, rugged, long-life - the cylindrical grinding machines of the Numerika series meet any requirements for the series production of a broad range...

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DRESSING UNIT • Insensitive to vibrations and low maintenance thanks to spindle mounted on hydrostatic bearings • Peripheral speed: 45 (60) m/s • Different wheelhead versions (fixed or can be swiveled) for straight or angular plunge cuts (0° – 30°) as well as high-resolution B-axis • Automatic compensation of grinding wheel diameter after dressing • Single-grain diamond or dressing fleece (standard) • Rotating dressing (optional): – Diamond profile grinding wheel or – Diamond shape roller • With either dead or live center • Rolling or hydrostatic bearings • Speed programmable in a range from...

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OUTPUT OF GRINDING WHEEL MOTOR GRINDING WHEEL WIDTH WORKPIECE SPINDLE: PROGRAMMABLE SPEED WORKPIECE SPINDLE: INTERNAL MORSE TAPER TAILSTOCK SLEEVE: INTERNAL MORSE TAPER TAILSTOCK SLEEVE: Stroke length TAILSTOCK SLEEVE: CORRECTION OF taper INSTALLED TOTAL OUTPUT Swiveling automatic with Hirth serration 6 ZEMA • NUMERIKA NUMERIKA • ZEMA 7

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EUROPE Erwin Junker Maschinenfabrik GmbH JunkerstraBe 2 77787 Nordrach Germany [email protected] +49 (0)7838 84 0 www.junker.de Erwin Junker Makina Sanayi Ticaret LTD. STi. Esentepe Mah. Milangaz Cad. No:75 Monumento Kartal/Istanbul Turkey [email protected] +90 216 504 28 11 www.junker-turkey.com.tr Erwin Junker Grinding Technology a.s. Russia Branch Office Prospekt Tolbukhina 17/65 150000 Yaroslavl Russian Federation [email protected] +7 (4852) 20 61 21 wwwjunker-russia.ru LTA Industrial Air Cleaning Systems s.r.o. Lidicka 66 252 68 Stredokluky Czech Republic [email protected] +420 233 012...

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NUMERIKA

NUMERIKA

Catalog excerpts

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