MIL-DTL-17060G(SH)
3.5.1.37 Standardization. Squirrel-cage induction motors and radial gap synchronous motors shall be in
accordance with the standardization requirements shown on figures 1 through 4. Applicable motor standardization
requirements, contained in auxiliary equipment specifications, take precedence over figures 1 through 4. For
submarine service, low noise applications on surface ships, or applications where the use of standard motors is not
practical, nonstandard motors may be proposed for acceptance to the contracting activity. Nonstandard motors shall
be as specified on figures 1 through 4, with the exception that the requirements of table A of figures 1 through 4 may
be used as a guide.
3.5.1.38 Motors with cooling other than air. When motors with cooling other than air are specified (see 6.2),
NAVSEA approval shall be provided (see 6.11).
3.5.2 Requirements applicable to individual services.
3.5.2.1 Service A motors. In addition to 3.5.2.1, Service A motors shall meet the requirements of 3.5.1 and 3.6.
Service A motors shall also meet MIL-E-917 and the requirements of MIL-S-901 for Grade A shock. Service A
motors shall be furnished with a sealed insulation system. Service A motors shall be brushless.
3.5.2.1.1 Materials. The minimum material requirements for Service A motors shall be as specified in table II
except nonmagnetic materials for nonmagnetic motors shall be as specified in 3.5.2.4.2.
TABLE II. Minimum material requirements for service A motors.
Item
Limitation
Material
Specifications or remarks
Materials containing
Motor
All sizes
silicone shall not be used
except in brushless motors
Brass
ASTM B21/B21M
Balance rings
All sizes
Bronze
ASTM B30 or
Corrosion resistant steel
ASTM B505/B505M
Other inherently noncorrodible
material
A-A-59581
General purpose
A-A-59625
Ball bearings
A-A-59582
surface ship
A-A-59626
A-A-59583
A-A-59627
A-A-59584
A-A-59628
A-A-59585
A-A-59629
A-A-59586
A-A-59630
A-A-59587
A-A-59631
A-A-59589
A-A-59632
A-A-59595
A-A-59633
A-A-59596
A-A-59634
A-A-59597
A-A-59635
A-A-59598
A-A-59636
A-A-59599
A-A-59637
A-A-59600
A-A-59638
A-A-59623
A-A-59639
A-A-59624
A-A-59640
A-A-59641
Noise quiet
MIL-B-17931
Ball bearings (continued)
submarine
16
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