General Electric Company · Electronic Components
121D557
Motor, Direct Current
Part Number121D557
ManufacturerGeneral Electric Company
AvailabilityAvailable to order — request a quote
Specifications
NSN6105-00-548-2016 (NSN)
Federal Item NameMOTOR,DIRECT CURRENT
Federal Supply Class6105 — Motors, Electrical
Keyway Length2.7500 INCHES NOMINAL SINGLE END
Test Data Document81349-MIL-M-17513 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DA
Inclosure SpecificationMIL-STD-108
Nominal Center To Center Distance9.500 INCHES
Keyway Width0.2500 INCHES NOMINAL SINGLE END
Mounting Facility Type And Quantit4 UNTHREADED HOLE(S)
Duty CycleCONTINUOUS
Rotor Speed Rating In Rpm1750.0 SINGLE FULL LOAD
Temp Rating40.0 AMBIENT CELSIUS AND 50.0 OPERATING CELSIUS
Cooling MethodNATURAL CONVECTION VENTILATED
Winding TypeSHUNT WOUND W/COMMUTATING POLES
Vendor Part Numbers5B284170
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is 121D557 available?
We can source 121D557 even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is 121D557 by General Electric Company obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 121D557 has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like 121D557?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for 121D557?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.