MIL-DTL-17060G(SH)
APPENDIX B
bb. In the specifications and exceptions block, include the number of the specification, the revision and
effective date, the amendment and effective date, as applicable, and additional data pertaining to special
requirements of the acquisition specifications.
NOTE: Figure 5 is indicative of the general arrangement and information desired by the command or agency
concerned for a Service A motor drawing for a two-speed, integral hp, AC motor. The command or agency
concerned recognizes that the information required on other designs of motors, such as single speed, will not be the
same as shown hereon. In such cases, it will be permissible to add or subtract the necessary column and information
so as to fit the particular motor.
cc. For mechanical fasteners in rotating assemblies, the following shall be shown:
(1) Torque range for tightening.
(2) Fastener that may by used in balance correction shall be identified in the parts list with the designator
"Balance."
(3) For fasteners used in balance correction, the maximum stack height of washers, including the
lockwasher, if present, that may be installed under the head of the fastener, shall be shown. The dimension shall be
identified as Maximum Washer Stack Height.
dd. The method of balance correction shall be provided.
ee. The serial number and date of the Government acceptance letter of the motor drawing shall be shown.
ff. If used, the grade of nodular graphitic iron shall be shown in the parts list.
gg. For motors with a sealed insulation system, the following note should be shown on the drawing: This is a
high reliability motor. Repair Class C overhaul, is allowable if it is in response to a conditional requirement.
Winding repair shall be in accordance with NSTM Chapter 300.
hh. For submarine symmetrical motors, a note should be added to the drawing indicating that the motor is
symmetrical. The procedure for interchanging the end shields, reversing the rotor assembly and rotating the frame
shall be provided.
ii. For motors rated for other than continuous duty, the duty cycle or the Government document describing the
duty cycle shall be shown.
jj. The following details of the bearing preload device shall be shown in the parts list, in the sectional views or
in a note:
(1) The material, the outer and inner diameters and the free height shall be shown. In addition, for coiled
springs, the number of coils, the coil diameter and the wire diameter shall be shown.
(2) For submarine motors with special bearing preload requirements (see 3.5.2.5.13), in addition to the
information in (jj).1, above, the nominal working length and force and the plus and minus tolerance for the nominal
working length and force shall be shown. The following information shall also be provided: the dimensions and
tolerances of the cavity for the preload device, the surface that is machined to bring the cavity length within
tolerance and the method for determining how much metal to remove from that surface to achieve the correct cavity
length.
kk. Detail of the VSD motor identification plate. Information required on the plate to include the words, "VSD
MOTOR", the maximum safe rotating speed for constant torque applications, and the minimum operating speed.
ll. For motors without an applicable numeric requirement in table VI, the airborne noise acceptance criteria
and the applicable contract number.
B.2.2 Drawings for service C motors. Drawings for Service C motors shall be multidetailed wherever possible.
Figure 5 may be used as a guide for format and arrangement to the extent necessary to conform with the applicable
data requirements. Drawings for Service C motors shall contain the following information:
a. An outline drawing showing all dimensions, clearance holes, tapped holes, holes for mounting and position
of mounting.
b.
Stator data including inside diameter, core length, and winding data. Winding data to include:
(1) Number of poles.
(2) Type of connection.
82
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business