NEMA Grade Type Specifications
C FBM MIL-I-24768/16
CE FBG MIL-I-24768/14
LE FBE MIL-I-24768/13
L FBI MIL-I-24768/15
X PBM MIL-I-24768/12
XX PBG MIL-I-24768/11
XXX PBE MIL-I-24768/10
GRADE CE — CANVAS PHENOLIC
A course weave cotton fabric base phenolic laminate with greater mechanical strength than Grade XXX. Grade CE is strong, tough, and has high impact strength.
APPLICATIONS: It machines readily, and is excellent for a variety of mechanical applications such as gears, pulleys, sheaves, insulators, bushings, washers, and rollers.
Specification: MIL-I-24768/14, Type FBG
GRADE LE — LINEN PHENOLIC
A fine weave cotton fabric base phenolic laminate which provides a finer surface texture and better machinability than Grade CE. Grade LE is low in moisture pick-up and dissipation factor, and is excellent in all electrical properties. It can be machined easily and cleanly to very close tolerances, and is recommended for use where there is need for good mechanical properties combined with excellent electrical characteristics.
APPLICATIONS: Applications for Grade LE include intricate machined parts, radio components, fine gears and pinions, spacers, bushings and rollers.
Specification: MIL-I-24768/13, Type FBE
GRADE XXX — PAPER PHENOLIC
A paper base phenolic laminate with good mechanical properties, high dielectric strength, and good resistance to moisture. Grade XXX is our most economically priced grade and is recommended formost mechanical applications, for use at radio frequencies, and in high humidity situations.
APPLICATIONS: Typical applications include insulating washers, sleeves, switch bases and panelboards.
Specification: MIL-I-24768/10, Type PBE