摘要 |
A rotary rolling element bearing, for example on the spindle 10 of a machine tool, is mounted in series with a hydrostatic bearing between a piston member 25, in which the outer race 22 is mounted, and a housing. The hydrostatic bearing comprises fluid under pressure in pockets around the piston and increases damping, reduces noise and accommodates thermal expansion. The piston is loaded axially to preload the bearing 11. <IMAGE> |