NSK's Spacea range of bearings now includes two new versions that are
suitable for use in high temperature, vacuum environments. These
self-lubricating cage and spacer joint types are suitable for
200°C/10-7Pa and 350°C/10-10Pa conditions respectively, and are claimed
to offer longer operating life thanks to the steady supply of lubricant -
a sintered molybdenum disulphide material provided by the spacer joint.
This material also exhibits very low outgassing.