(b) Vertical motors - sleeve, ball or roller bearing:
(1) 45 degrees from their normal position in any direction.
(c) All motors shall be suitable for operation when a submarine is rolling 60 degrees to either side.
`(d) Sleeve and oil lubricated bearing motors shall be tested as specified in 220.127.116.11.
18.104.22.168 Drawings. - In addition-to the requirements of 3.4, master drawings shall conform to figure
2 in form, and general arrangement, and shall contain the following minimum data:
(a) An assembly end and side view showing all parts of the motor identified with piece numbers in
the list of materials and direction of mounting. The assembly side view shall show a longi-
tudinal section of the motor above the centerline. The assembly end view shall show a trans-
verse quarter section above the centerline. These assembly views shall show the following
(1) Bearings housing construction and bearing fits and tolerances. Bearing fits and tolerances
may be shown as a note on the drawing or on other assembly views.
(2) Sectional view of commutator (where used), brush rigging and brushes, design and mate-
rials of all brush rigging and brush holder stud insulation, and methods of supporting
brush rigging, brush holder studs and brushes against excessive deflection due to high-
impact shock. If necessary for clarity, a separate detail shall be included on the draw-
ing. Brush information shall include manufacturer's grade, Government grade and
Government form number.
(3) Method of retaining commutator and rotor core to shaft. Where a press fit is used to se-
cure the cores to the shaft the interference fit and minimum pressure to force the cores
on the shaft shall be shown. Where a shrink fit is used to secure the cores to the shaft,
the interference fit and the minimum pressure to remove the cores from the shaft shall
(4) Baffles and screen guards and the method used to attach them to the end shields or frames.
(5) Method of attaching terminal box to frame.
(6) Method of bringing cables out of frame into terminal box and the method of protecting these
cables against chafing at sharp metallic corners.
(7) Method of clamping motor leads in the terminal box to prevent strain on internal connections
and method of protecting lead insulation against abrasion by the clamp.
(8) Method of attaching fan to shaft and detail of fan showing constructions and number of
(9) All overall dimensions including mounting, shaft extensions and key.
(10) Method of securing stator core to frame to prevent axial and rotational movement and the
minimum pressure to force the core in the frame shall be shown if a press fit is used in
conjunction with other means. Where a shrink fit is used, the pressure required to force
the stator core out of the frame shall be shown.
(11) Direction of air flow.
(12) Total axial movement of the shaft to include bearing end play.
(13) All details required by this specification and not covered in the foregoing enumeration.
(b) A detailed working drawing of the shaft including bearing mounting dimensions.
(c) A schematic wiring diagram of the motor windings.
(d) Drawing of wiring arrangement and stator connection diagram. A connection table of motor
leads for two or more speed and/or dual voltage motors.
(e) Guaranteed performance including locked-rotor current, torque and power factor; pull-up
torque, breakdown torque, and efficiency and power factor at 2/4, 3/4 and 4/4 load.
(f) Stator inside diameter, and core length.
(g) Rotor outside diameter, number of bars, and bar material. Indicate reference line and di-
mension for locating rotor axially on shaft in connection with replacement of shaft or rotor,
(h) Size of end ring and end ring material.
(i) Winding data of stator, including:
Number of poles.
Type of connection.
Number of slots.
Number of coils.
Winding pitch in slots.
Turns in series per coil.
Conductor circular roils or size.