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CNC Centreless Grinders
In 1963, Hélio Cruz, founder of Boneli, built the first centerless grinder in Brazil.
In 1972 BONELI was established in the city of São Paulo and actively participated of the biggest industrialization period of the country, supplying machines to all automobile assembly companies and all the main auto parts suppliers of Brazil.
In 1978 the company moved to Piracicaba, 140 km from São Paulo, where it is presently located.
1,500 machines have been manufactured by BONELI for the


electric, tools and

pneumatic industries
BONELI has big list of satisfied users such as
  General Motors, Fiat, Volkswagen,
  Mercedes Benz, Rockwell, Eaton,
  Danfoss, Rexroth, Vickers,
  INA, SKF, FAG, Light Metal, Mahle, Cofap,
  Tenneco, Magnetti Marelli, TRW, Electrolux, WEG, Bosch, Visteon, Delphi, Dana,
  GKN, Autocam, Arcelor, OSG, Dormer, Twill, Sandvik and
  the biggest auto parts manufacturers of Brazil.
Since the beginning, BONELI chose to incorporate high technology components using
linear guides and ballscrews, by ROSA Italy
automatic electronic balancing of the grinding wheel,
flow switch protection systems for the grinding wheel spindle,
self-centering hydrodynamic bearings,
Electric Components by Siemens Germany
CNC from MDSI USA for wheel dressing interpolation,
optic measurement and in-process correction,
synthetic granite machine beds and, more recently,
spindles with integrated motors for the grinding and regulating wheels by GMN Germany
Linear Tables by IKO Japan
Servo Motors & Servo Drives by Indramat Germany
Between 1990 and 2006, BONELI created a dedicated division to manufacture special grinders and to retrofit centerless grinders. During this period the company retrofitted more than 200 centerless grinders from all manufacturers, such as Landis, Cincinnati, Multimat, Herminghausen, Mikrosa, Malcus, Ghiringhelli, Giustina, Monza, Estarta, Llidkoping, Koyo and others. The experience gained from retrofitting favored the development of new solutions, to improve and to correct our projects. In 2006, BONELI introduced SMART series, which summarizes 35 years of experience, market knowledge and leadership. The SMART series revolutionized the centerless grinding concept and brought technological innovations that place BONELI in the world-wide market.
For more details :,+91 9969789431
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