Model: B491

Nonwire Wound Variable Resistor

Special Features:

Shaft screwdriver slotted 0.050 in. Deep by 0.031 in. W, 1 no. 0 (0.060 in. Dia) -80 thd hole 0.250 in. Min deeep centered in shaft

Properties:

Section Quantity
1
Body Style
Cylindrical servo mounted
Reliability Indicator
Not established
Pilot Diameter
1.5000 inches
Pilot Length
0.0620 inches
Undercut Diameter
0.875 inches
Undercut Width
0.0730 inches
Body Diameter
2.031 inches
Shaft Diameter
0.375 inches
Shaft Length
1.380 inches
Body Length
0.725 inches
Mounting Lip Diameter
1.8750 inches
Mounting Lip Depth
0.0930 inches
Undercut Diameter
0.125 inches
Shaft Style
Round, stepped
Shaft Bearing Type
Ball
Actuator Type
Single shaft
Effective Electrical Rotation In Deg Angular Rotation
352.0
Shaft End Play
0.005 inches
Shaft Runout
0.002 inches
Lateral Runout
0.001 inches
Pilot Diameter Runout
0.001 inches
Shaft Radial Play
0.005 inches
Mechanical Backlash In Deg Angular Rotation
0.1
Undercut Length
0.921 inches
Terminal Location
Radially positioned over less than half the circumference
Mounting Method
Clamp ring
Electrical Resistance Per Section
10.0 kilohms single section
Rotary Actuator Travel In Angular Deg
360.0
Function Conformity Tolerance Per Section
-0.05/+0.05 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
2.0 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
70.0 single section
Terminal Type And Quantity
3 solder stud
NSN
5905-01-007-6253
Part Number
B491
Description
Resistor,variable,nonwire Wound,
CAGE
04454

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 finctional tolerance (linearity) of the output is equal to or less than plus or minus 1 percent on linear outputs. Specified outputs such as sine, cosine, tangent, etc., shall be considered to be precision. For items having manually postioned taps designed to be set and fixed prior to use, see resistor, adjustable. For items with step by step variation, see rehostat 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, wire wound, nonprecision; resistor (1), variable nonwire wound, nonprecision; and resistor (1), variable, wire wound, precision.

Part B491 NSN 5905-01-007-6253

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
37407
FIIG:
A002A0
Concept No.:
1
App. Key:
C
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
ZZ
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
062960
UFC:
35140
LTL:
77.5
LCL:
--
WCC:
658
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8533400080
  • SITC: 77235
  • End Use: Electric apparatus
  • NAICS: 334416
  • USDA: 1

Freight Class: Variable resistors, including potentiometers, nesoi

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