Kearfott · Electronic Components
R860-25B
Motor-Tachometer Generator
Part NumberR860-25B
ManufacturerKearfott
AvailabilityAvailable to order — request a quote
Specifications
NSN6105-00-808-4934 (NSN)
Federal Item NameMOTOR-TACHOMETER GENERATOR
Federal Supply Class6105 — Motors, Electrical
Length Of Shaft From Housing0.376 INCHES SINGLE END
Connection Type And Voltage Rating115.0 LINE TO NEUTRAL SINGLE INPUT
Frequency In Hertz400.0 OUTPUT
Excitor TypeSEPARATELY EXCITED
Calibration Speed In Rpm1000.0
Shaft Diameter0.1247 INCHES NOMINAL SINGLE END
Mounting MethodCLAMP RING(S)
Rotor Speed Rating In Rpm5500.0 SINGLE NO LOAD
Torque Rating And Type0.550 INCH-OUNCES STALLED
Temp Rating-15.0 OPERATING CELSIUS AND 75.0 OPERATING CELSIUS
Power Rating3.500 WATTS INPUT
Vendor Part Numbers1976471, 2852261040, 58A122D1696
Cancelled NSN6105-00-803-6337 (cancelled)
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 R860-25B available?
We can source R860-25B 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 R860-25B by Kearfott obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If R860-25B 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 R860-25B?
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 R860-25B?
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.