MIL-B-85598

Abstract

This specification defines the requirements for spherical, radial-journal, conical and thrust bearings which are of laminated elastomeric construction. These bearings are for use in an environment having a temperature spectrum within a maximum ambient temperature range of &#8722;65&#176;F to +160&#176;F while reacting oscillating loads and motions. <br>Bearings shall be specified as the following types depending on usage: </span><pre> Type I - Blade retention bearings Type II - Control system bearings</pre> <br> <br>Bearings shall be specified by the following classes depending on configuration. <pre>Bearings containing one lamination: Class A - Radial journal bearing (see <a>Figure 1</a>) Class B - Conical bearing (see <a>Figure 2</a>) Class C - Spherical thrust bearing (see <a>Figure 3</a>) Class D Thrust bearing (see <a>Figure 4</a>) Class E - Spherical rod end bearing (see <a>Figure 5</a>) Bearings containing two different laminations: Class AE - Spherical radial journal bearing (see <a>Figure 6</a>) Class BE - Spherical conical bearing (see <a>Figure 7</a>)</pre> <br> <br>Specification part numbers will be as specified on the applicable specification sheets. <strong>Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Systems Engineering and Standardization Department (Code 53), Naval Air Engineering Center, Lakehurst, NJ 08733, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.</strong> <br><b><u>Intended Use:</u></b> The bearings are intended for use in critical helicopter applications where they are subjected to a spectrum of superimposed dynamic loads and motions. <br>