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Pre Wire Wound Variable Resistor

Model / MPN: 81421 | NSN: 5905-00-545-8774
ITAR Registered seal

A resistor in which a sliding or rolling contact moves over an exposed area of the resistive element to change the ohmic value of the output. The functional tolerance (linearity) of the output is equal to or less than plus or munus 1 percent on linear outputs. Specified outputs such as sine, cosine, tangent, etc., shall be considered to be precision. For items having manually positioned taps designed to be set and fixed prior to use, see resistor, adjustable, for items with step by step variation, see rheostat and resistor, step by step. For tandem-mounted items designed to function together as an attenuator (and rated accordingly), see attenuator, variable. Excludes resistor (1), variable, nonwire wound, nonprecision; resistor (1), variable, nonwire wound, precision; and resistor (1), variable, wire wound, nonprecision.

Product Details
NATO Stock Number
5905-00-545-8774
Sold in multiples of
DEMIL
NO
Section Quantity
1
Body Style
Cylindrical servo mounted
Reliability Indicator
Not established
Pilot Diameter
0.7500 inches
Pilot Length
0.1000 inches
Overall Length
1.285 inches
Undercut Diameter
2.969 inches
Undercut Width
0.1000 inches
Body Diameter
3.000 inches
Angle Of Mounting Hole In Deg
90.0
Angle Between Centerlines Of Mounting Holes In Deg
120.0
Shaft Diameter
0.250 inches
Shaft Length
1.000 inches
Body Length
1.250 inches
Overall Diameter
3.125 inches
Mounting Lip Diameter
3.0000 inches
Mounting Lip Depth
0.1000 inches
Mounting Hole/stud Circle Diameter
1.250 inches
Shaft Style
Round
Shaft Bearing Type
Ball
Actuator Type
Single shaft
Effective Electrical Rotation In Deg Angular Rotation
320.0
Maximum Starting Torque
1.00 inch-ounces
Screw Thread Diameter
0.138 inches
Screw Thread Series Designator
Unc
Screw Thready Qty Per Inch (tpi)
32.0
Mounting Facility Quantity
3
Terminal Location
Radially positioned over less than half the circumference
Mounting Method
Threaded hole
Features Provided
Nonmetallic shaft
Electrical Resistance Per Section
10.970 kilohms single section
Rotary Actuator Travel In Angular Deg
360.0
Function Conformity Tolerance Per Section
-0.10/+0.10 single section
Ambient Tempurature In Deg Celsius Per Section At Zero Percent Rated Power
125.0 single section
Power Dissipation Rating Per Section In Watts
6.0 free air single section
Function Conformity Per Section
Single section independent linearity
Resistance Tolerance Per Section In Percent
-10.0/+10.0 single section
Actuator Travel Control Feature
Continuous motion
Function Characteristic Per Section
Single section linear
Ambient Tempurature In Deg Celsius Per Section At Full Rated Power
25.0 single section
Terminal Type And Quantity
3 turret

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81421 Cross Reference
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