Specialist in corundum grinding

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.

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.

HIGHLIGHTS

Perfect grinding results

Robust machine bed

Hydrostatic guides

Grinding spindles on roller or hydrostatic bearings

User-friendly control system

Outstanding surface quality

Integration in production lines

High degree of automation

Automatic loading and unloading systems

Our experts will provide you with an overview of our wide-ranging portfolio

We would be happy to advise you on individual requirements such as process optimization, digital networking, and tailor-made machine concepts.

We would be pleased to invite you to our headquarters in Nordrach, where you can see the outstanding properties of JUNKER machines for yourself.

In our technology centers, you can carry out exhaustive testing using your own workpiece to assess the technical and economic performance of a machine.

Company History

1953

Mr. Zselics founded the mechanical workshop São José for the production of mechanical parts, assemblies and devices for other companies

1962

The company name changed to Zselics & Cia., an operating machine factory, starting the manufacturing of the Zema milling machine

1968

Always working in the mechanical construction sector started production of universal milling machines and parallel lathes, totaling approximately 4,000 machines scattered throughout Brazil

1972

A major expansion occurred when the company was moved to Riacho Grande in São Bernardo do Campo, SP in an land area of 280,000 sq.m, in a covered area of 10,000 sq.m

1979

The company has expanded its product range to produce a line of surface grinding machines and internal cylindrical with Know-how acquired a traditional European company

1982

Launch of Numerika External cylindrical CNC Grinding line

1988

Creating Retrofitting Division

1990

Development of specific grinding machine for heavy Crankshafts

1990

It is the beginning of the first exports to Europe and USA

1994

Began to be exported the first grinding machines for: USA, ITALY, FRANCE and CANADA

1999

Supply a series of machines to grinding of Injection Nozzle with high level of automation

2001

Launch a new line machines, Futura, Pratika, Intertronika

2003

Zema - 50 years

2004

ISO 9001 – 2000 certification

2010

Supply a grinding machine with double (B axis) to grinding tungsten carbide parts

2015

Qualified majority in Zema Zselics Ltda., Brasil

2019

Further development of the KARGO series for flexible machining of medium and heavy workpieces