The traditional Brazilian brand ZEMA joined the JUNKER Group in 2015. Founded in 1953, the company has specialized in the production CNC grinding machines with corundum grinding wheels.
ZEMA produces ingeniously engineered machine concepts in its location in São Paulo – for grinding workpieces such as gear, turbocharger and articulated shafts, crankshaft
flanges and journals and also non-standard solutions.
ZEMA utilizes the worldwide sales and servicing network of the JUNKER Group and works predominantly for customers from the automotive and tool industry.
The corundum grinding machines fulfill the requirements of series production for a wide range of different workpieces. The CNC grinding machines grind elements such as flanges and journals on crankshafts as well as gear, turbocharger and cardan shafts with the utmost precision and reliability.
The NUMERIKA model range is designed for the series production of a wide variety of different workpieces – up to a length of 3.50 meters in the biggest model.
The cylindrical grinding machine KARGO takes ultra-heavy workpieces such as shafts for generators or electric motors with weights of up to six tons easily in its stride.
Rounding off the range are the FLEXA corundum grinding machines, which are capable of solving up to three grinding assignments with the utmost precision. Whether internal or external grinding and even thread grinding: the modular design of the robust FLEXA series makes it ideal for medium-sized production runs.
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 3.70 m. A torsion-resistant machine bed, hydrostatic guides and grinding spindles mounted on rolling or hydrostatic bearings provide for perfect grinding results. The user-friendly control system offers all required input screens for grinding with corundum.
Up to 4.5 meters long and weighing several tons – the KARGO series tirelessly masters grinding shafts of this size. The various sizes and wheelhead versions make this machine ideal for grinding external and internal diameters as well as faces, threads, and tapers on heavy workpieces.
The versatile grinding machines of the FLEXA series are ideal for the flexible processing of different grinding assignments on a single workpiece. The FLEXA is capable of the ultra-precise execution of up to three grinding assignments with minimal retooling time. Whether internal or external grinding and even thread grinding, its modular design makes this conventional, robust grinding machine ideal for small and medium-sized production runs.