MIL-STD-2193 Ship Hydraulic System ComponentsThis standard provides design, construction, and testing requirements that are common to most components used in ship hydraulic power transmission and control systems. This standard does not establish configuration requirements, pressure, flow, or performance requirements for any specific component.

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MIL-STD-2193C(SH)

CONTENTS

PARAGRAPH                                                                                                                                                         PAGE

1.  SCOPE......................................................................................................................................................................1

1.1  Scope. .................................................................................................................................................................1

1.2  Purpose. ..............................................................................................................................................................1

1.3  Implementation guidance....................................................................................................................................1

2.  APPLICABLE DOCUMENTS ................................................................................................................................1

2.1  General ...............................................................................................................................................................1

2.2  Government documents. .....................................................................................................................................1

2.2.1  Specifications, standards, and handbooks....................................................................................................1

2.3  Non-Government publications............................................................................................................................3

2.4  Order of precedence............................................................................................................................................5

3.  DEFINITIONS .........................................................................................................................................................6

3.1  Radial static external seal ...................................................................................................................................6

3.2  Radial static internal seal ....................................................................................................................................6

4.  GENERAL REQUIREMENTS................................................................................................................................6

4.1  Recycled, recovered, or environmentally preferable materials...........................................................................6

4.2  Compatibility. .....................................................................................................................................................6

4.3  Materials. ............................................................................................................................................................6

4.4  Environmental conditions...................................................................................................................................6

4.4.1  Ambient pressure.........................................................................................................................................6

4.4.2  Ambient temperature. ..................................................................................................................................6

5.  DETAILED REQUIREMENTS...............................................................................................................................6

5.1  Materials. ............................................................................................................................................................6

5.1.1  Metals. .........................................................................................................................................................6

5.1.2  Plated coatings.............................................................................................................................................6

5.1.2.1  Cadmium and zinc plating. ...................................................................................................................7

5.1.2.2  Aluminum alloys. .................................................................................................................................7

5.1.2.3  Ferrous alloys........................................................................................................................................7

5.1.3  Plastic parts..................................................................................................................................................7

5.1.4  Prohibited materials. ....................................................................................................................................7

5.1.5  Mercury contamination................................................................................................................................7

5.2  Construction........................................................................................................................................................7

5.2.1  Standard parts. .............................................................................................................................................7

5.2.2  Reverse installation......................................................................................................................................8

5.2.3  Structural strength........................................................................................................................................8

5.2.4  Weight. ........................................................................................................................................................8

5.2.5  Surface roughness........................................................................................................................................8

5.2.6  Alignment. ...................................................................................................................................................8

5.2.7  Orifices. .......................................................................................................................................................8

5.2.8  Seals.............................................................................................................................................................8

5.2.8.1  Gland design and related requirements.................................................................................................8

5.2.8.2  O-rings. .................................................................................................................................................9

5.2.8.3  Elastomeric seals other than O-rings. ...................................................................................................9

5.2.8.4  Back-up rings........................................................................................................................................9

5.2.9  Fasteners. .....................................................................................................................................................9

5.2.9.1  Threaded inserts..................................................................................................................................11

5.2.9.2  Bolt hole diameter...............................................................................................................................11

5.2.9.3  Safety..................................................................................................................................................11

5.2.9.4  Self-locking devices............................................................................................................................11

5.2.9.5  Washers. .............................................................................................................................................11

5.2.10  Retainer rings...........................................................................................................................................11

5.2.10.1  Load limitation..................................................................................................................................11

5.2.10.2  Installation clearances and tolerances. ..............................................................................................11

5.2.10.3  Installation and removal....................................................................................................................11

5.2.11  Spring pins...............................................................................................................................................11

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