scope:

This specification covers flexible couplings for propulsion units, auxiliary equipment, and line shafts.

Couplings are of the following types and classes as specified (see 6.2):

Type I Dental coupling lubricated by oil circulation. Class 1 275 minimum Brinell tooth hardness. Class 2 350 minimum Brinell tooth hardness. Class 3 Nitrided, 49 minimum Rockwell C tooth hardness. Class 4 Carburized or induction hardened, 56 minimum Rockwell C tooth hardness. Class 5 Nitrided, 59 minimum Rockwell C tooth hardness. Type II Dental coupling, self-contained (grease) lubricant. Class 1 Commercial, 160 minimum Brinell tooth hardness. Class 2 275 minimum Brinell tooth hardness.

Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 05Q42, 2531 National Center, Bldg. 3, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.

Type III Laminated-disc coupling. Type IV Nonmagnetic, noise-attenuation coupling. Type V Line-shaft noise-attenuation coupling assembly. Type VI Diaphragm coupling. Type VII Elastomer flexible coupling. Type VIII Connect or disconnect dental coupling.

intended Use: