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Pre Wire Wound Variable Resistor

Model / MPN: CM21312-2 | NSN: 5905-00-894-0407
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
5905-00-894-0407
Sold in multiples of
1 EA
DEMIL
NO
Section Quantity
1
Body Style
Cylindrical bushing mounted
Reliability Indicator
Not established
Overall Length
1.307 inches
Body Diameter
1.312 inches
Shaft Diameter
0.2497 inches
Shaft Length
0.495 inches
Mounting Bushing Length
0.375 inches
Body Length
0.625 inches
Overall Diameter
1.312 inches
Shaft Style
Round
Shaft Bearing Type
Sleeve
Actuator Type
Single shaft
Effective Electrical Rotation In Deg Angular Rotation
352.0
Nonturn Device Location
At 6 oclock
Nonturn Device Radius
0.562 inches
Shaft End Play
0.005 inches
Shaft Runout
0.0025 inches
Lateral Runout
0.005 inches
Pilot Diameter Runout
0.0025 inches
Shaft Radial Play
0.004 inches
Fragility Factor
Moderately rugged
Screw Thread Diameter
0.375 inches
Screw Thread Series Designator
Unef
Screw Thready Qty Per Inch (tpi)
32.0
Terminal Location
Rear end
Mounting Method
Standard bushing
Features Provided
Humidity proof
Cubic Measure
1.052 cubic inches
Electrical Resistance Per Section
2.7 percent, rated amperes c and better flooring
Tap Location From Ccw Terminal Per Section In Deg Of Effective Electrical Rotation
176.0 single section
Rotary Actuator Travel In Angular Deg
360.0
Function Conformity Tolerance Per Section
-1.00/+1.00 single section
Ambient Tempurature In Deg Celsius Per Section At Zero Percent Rated Power
105.0 single section
Power Dissipation Rating Per Section In Watts
2.0 7th secondary quality
Function Conformity Per Section
Single section independent linearity
Fixed Tap Quantity Per Section
1 single section
Tap Location Tolerance Per Section
-1.0/+1.0 degrees angular rotation single section
Resistance Tolerance Per Section In Percent
-5.0/+5.0 single section
Actuator Travel Control Feature
Continuous motion
Function Characteristic Per Section
7 oclock all primaries
Tempurature Coefficient Of Resistance Wire Per Section In Ppm Per Deg Celsius
-20.0/+20.0 single section
Ambient Tempurature In Deg Celsius Per Section At Full Rated Power
55.0 single section
Precious Material And Location
Terminals gold
Precious Material
Gold
Terminal Type And Quantity
4 solder stud
CM21312 Series Parts

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CM21312-2 Cross Reference
  • 32833-2
  • 130-121