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Control Transformer Synchro

NSN: 5990-00-056-7800 | Model: 7RS900-2H

A synchro consisting of a stator and rotor inductively coupled. The electrical output of the rotor is dependent upon both the position of the rotor and the electrical input to the stator from a transmitter synchro or a differential synchro. Does not include variable resistors, goniometers, or variable transformers.

NSN Properties and Flags
NATO Stock Number
5990-00-056-7800
DEMIL
NO
Body Material
Steel, stainless
Body Style
Standard round a
Pilot Diameter
0.6250 inches
Overall Length
2.2970 inches
Flange Diameter
1.0620 inches
Flange Thickness
0.0620 inches
Undercut Diameter
1.0000 inches
Undercut Width
0.0500 inches
Shaft Diameter
0.1200 inches single shaft
Shaft Length
0.4810 inches single shaft
Body Size
11
Stator Input Voltage Rating In Volts
26.0
Stator Input Current Rating
29.0 milliamperes
Stator Input Electrical Power Rating
80.0 milliwatts
Frequency In Hertz
400.0
Zro Resistance In Ohms
210.00
Zso Resistance In Ohms
28.00
Zrs Resistance In Ohms
250.00
Rotor Dc Resistance In Ohms
300.00
Stator Dc Resistance In Ohms
185.00
Phase Shift Angle In Deg
4.500 input to output
Maximum Fundamental Null Voltage In Millivolts Per Volt
25.00 input
Maximum Total Null Voltage Output In Millivolts Per Volt
65.00
Electrical Error Angular Range In Minutes
-7.0/+7.0
Spline Tooth Quantity
13 single shaft
Actuator Friction Torque At Minus 55 Deg Celsius
16.0 centimeter-grams
Actuator Friction Torque At Plus 25 Deg Celsius
6.0 centimeter-grams
Pilot Length
0.0690 inches
Mounting Surface To Terminal End Distance
1.7320 inches
Spline Tooth Diametral Pitch
120 single shaft
Shaft Thread Series Designator
Unf single shaft
Shaft Thread Direction
Right-hand single shaft
Shaft Thread Class
2a single shaft
Terminal Location
Rear
Shaft Thread Length
0.1880 inches single shaft
Plus J Zro Reactance In Ohms
690.00
Plus J Zso Reactance In Ohms
114.00
Plus J Zrs Reactance In Ohms
173.00
Shaft Type
Spline w/threads single shaft
Transformation Ratio
0.575 rotor to stator
Shaft Thread Size
0.120 inches single shaft
Terminal Type And Quantity
5 wire lead

Pricing and Availability

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NSN 5990-00-056-7800 Datasheet

Supply Class (FSC):
Synchros And Resolvers
Cross Reference:
  • 7RS900-2H
  • VCT114B8LP0RM7MINUTES
  • 421-1D900
  • 421-1D900
Cage Codes:
  • Kearfott Corporation (CAGE 88818)
  • Vernitron Corp (CAGE 10651)
  • Gap Instrument Corp (CAGE 00607)
  • Advanced Logic Resources Inc (CAGE 07CR8)
Schedule B & Trade:
  • Schedule B: 9014900000 (NAICS 334511)

    Parts & accessories for direction finding compasses and other navigational instruments and appliances

  • SITC: 87412

    Parts and accessories of navigational instruments and appliances

  • End Use: 22220

    Marine engines, parts

Identification:
HMIC

N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

PMIC

U - Precious metal content is unknown

CRITL

- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    062120 - Generators/motors/parts noi

  • WCC:

    593 - Motors and parts, (machinery and parts),(less than 35 feet)

  • SHC:

    9 - Other or no special handling required (sh)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • ACC:

    H - Instruments/equipment/supplies for radio, communications, electrical, laboratory, etc. (includes signal corps)

  • LTL:

    W - Rating variable

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
    Sms
  • AAC
    J
  • Quantity per pack
    1
  • Unit of Measure
    Ea
  • Shelf Life
    N/A
  • Classification Control
    U
  • MGMT_CTL
    9b-----
  • Repariability

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $1,441.03 to $2,401.72..
Does NSN 5990-00-056-7800 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Navy
What is the NIIN of NSN 5990-00-056-7800?
000567800 or 00-056-7800
Does NSN 5990-00-056-7800 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5990-00-056-7800?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
May 27, 1967