Deep groove ball bearings

Based on our many years of experience in developing and manufacturing high-quality machine components, GMN has specialized in the area of high-precision ball bearings as well as the production of high-performance and long-lived deep groove and spindle ball bearings to meet – or even exceed – the highest precision classes P4 and ABEC 7. Certification under international standards ensures the highest precision in the development and manufacturing of GMN ball bearings and guarantees constant, outstanding qualities related to speed suitability, stability and longevity. The broad product range includes a large selection of standard solutions as well as requirements-tailored special designs.

GMN offers a complete range of sizes, types and designs with its spindle ball bearings in standard sizes S, SM and KH. In conventionally oil-lubricated spindle bearings, lubricant is supplied through a lateral oil supply. GMN spindle bearing designs +A, +AB, +L and +LB provide direct oil supplies to the lubrication point through a bore in the outer ring. GMN spindle bearing designs +AG ensure the highest possible machine running times without complex oil supply systems. These feed the lubricant directly into the lubricating point through holes in the outer ring. The developed high-performance, separable BNT and BHT designs ensure fast and uncomplicated handling, especially with regard to assembly and maintenance.

For many applications such as machine tools, medical devices, vacuum and measuring equipment, as well as complex bearing systems, GMN develops and offers special ball bearings which meet our customers’ specified requirements.

"Ball bearings with a material combination of bearing steel (inner and outer rings) and ceramic (balls) are called ‘hybrid’ ball bearings. All GMN ball bearings can be supplied as hybrid ball bearings. The material characteristics of ceramic balls in hybrid ball bearings result in significant increases in machine performance (in comparison to ball bearings using steel balls), especially under critical conditions.