High precision ball bearings

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.

The use of high-precision radial groove ball bearings is especially recommended when axial forces are supported in two directions, but the installation space makes the use of a spindle bearing pair impossible; plus when the best-possible guide for rotating components is needed, but the RPM requirements are less important. Depending upon the load capability and the installation space available, GMN provides deep groove ball bearings in sizes 60 and 62 as per DIN 625. A large selection of various cages, lubricants and covers make it possible to adapt GMN deep groove ball bearings to any application.

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.