Use of a rolling-element bearing for bearing rotating components in vacuum devices and vacuum device

A technology of vacuum equipment and rolling elements, which can be used in parts of pumping devices for elastic fluids, rotating parts against centrifugal force, bearings, etc., and can solve the problems of expensive magnetic suspension bearings
CN102105653BInactive Publication Date: 2013-09-04OERLIKON LEYBOLD VACUUM
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
OERLIKON LEYBOLD VACUUM
Publication Date
2013-09-04
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A rolling-element bearing for bearing rotating components in vacuum devices includes a plurality of rolling elements (10) arranged between bearing elements (12, 14). A bearing compartment (26) is for example closed by sealing elements (22, 24) on both sides. The sealing elements (22, 24) have a minor sealing gap(s). The rolling-elements bearing is used in vacuum sections in which a pressure of less than 10−3 mbar prevails.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to the use of rolling element bearings for supporting rotating parts in vacuum installations and to such vacuum installations. Background technique

[0002] Vacuum devices such as vacuum pumps include a pumping element arranged in a suction chamber. For example, pumping elements are Rhodes pistons, screw rotors, etc. Typically, the pumping elements are each supported by a rotating shaft. Each shaft is usually supported by two bearing arrangements. The bearing arrangement usually comprises grease lubricated rolling element bearings. Use any rolling element bearings in vacuum pumps only if the pressure is not lower than 10 -3 It is beneficial in millibar (mbar) applications.

[0003] Therefore, rotating parts, especially the rotor shaft, are usually supported by grease-lubricated rolling element bearings. In this regard, according to the prevailing opinion of experts, the rolling bearing elements must be arranged so th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More