MIL-DTL-17060G(SH)
TABLE II. Minimum material requirements for service A motors - Continued.
Item
Limitation
Material
Specifications or remarks
Part covers for totally
Malleable iron
ASTM A47/A47M
--------
enclosed type machines
where the cover acts as a
Aluminum
ASTM B26/B26M
shield only, and not as a
support for another part
Plastic molded thermosetting
ASTM D5948
such as auxiliary or brake
Steel 1/
Quills and spiders
Where used
--------
Scraper
All sizes
Brass
Commercial
Close-coupled
Corrosion-resistant material
Shafts
Steel
pumps
All other motors
Tensile strength not less
than 75,000 lb/in2 and
elongation not less than
18% in 2 inches
Brass
ASTM B21/B21M
Shaft seals
All sizes
Bronze
ASTM B30, ASTM
B505/B505M
Corrosion resistant steel
ASTM A29/29M
Other inherently noncorrodible
material
Bronze
ASTM B30 or
Sleeve bearings
All sizes
ASTM B505/ B505M
Babbitt antifriction metal
ASTM B23,
Alloy Number 2
Steel 1/
ASTM A47/A47M
Terminal boxes
All sizes
Malleable iron
MIL-C-24707/5
terminal box covers
Nodular graphitic-3 iron
Copper, round 2/
Wire, magnetic
Types M2, K2, H2
NEMA MW1000
Varnish insulating
All classes
MIL-I-24092
Wire, end turn banding
All sizes
Steel and non-magnetic alloy
Commercial
Steel
Commercial
Wedges
All sizes
Brass
Commercial
Thermoset fiberglass
Commercial
Nodular graphitic-3 iron
MIL-C-24707/5
NOTES:
1/
Steel parts shall be cast, fabricated, wrought, or forged. Cast steel shall be in accordance with MIL-C-24707
and MIL-C-24707/1, Grades A1Q of ASTM A757/A757M or WCA of ASTM A216/A216M. For Grade WCA
of ASTM A216/A216M, the Charpy impact test conditions shall be 20 foot-pounds and minus 20 °F.
2/
Alternate wire sizes - sizes other than those in NEMA MW1000 may be used provided the motor design is such
as to permit rewinding with a size and shape wire specified in NEMA MW1000, having an equivalent or higher
temperature rating.
3/
Modular graphitic iron shall be furnished in either of the following two grades: 1) 60-45-15, 2) 60-40-18.
3.5.2.1.2 Solder for winding connections. Solder, where required for electrical connections, shall be silver-base
brazing alloy or copper-base brazing alloy in accordance with QQ-B-654 or AWS A5.8, respectively.
3.5.2.1.3 Windings.
18
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business