ST18-S179A

Technical Characteristics

• Maximum Running Torque

  2.00 inch-ounces

• Screw Thread Quantity Per Inch

  32.0

• Function Conformity Per Section

  all sections terminal base linearity

• Precious Material

  gold and silver

• Overall Diameter

  2.156 inches nominal

• Pilot Diameter

  0.49500 inches minimum and 0.50500 inches maximum

• Shaft Length

  1.984 inches minimum and 2.016 inches maximum

• Undercut Diameter

  1.625 inches maximum

• Power Dissipation Rating Per Section In Watts

  2.0 free air all sections

• Mounting Hole/Stud Circle Diameter

  0.870 inches minimum and 0.880 inches maximum

• Body Diameter

  1.755 inches maximum

• Temp Coefficient Of Resistance Wire Per Section In Ppm Per Deg Celsius

  -20.0/+20.0 all sections

• Shaft Style

  round, slotted

• Shaft Bearing Type

  ball

• Electrical Resistance Per Section

  80.000 percent, rated amperes c and better industrial clears

• Function Characteristic Per Section

  all sections linear

• Electrical Resistance Per Section

  80.000 percent, rated amperes c and better finish

• Section Quantity

  4

• Resistance Tolerance Per Section In Percent

  -1.0/+1.0 1st section

• Electrical Resistance Per Section

  80.000 percent, rated amperes c and better select

• Effective Electrical Rotation In Deg Angular Rotation

  350.0 minimum

• Precious Material And Location

  terminals gold and terminals silver

• Rotary Actuator Travel In Angular Deg

  360.0 nominal

• Actuator Type

  single shaft

• Reliability Indicator

  not established

• Screw Thread Series Designator

  unc

• Screw Thread Diameter

  0.138 inches nominal

• Actuator Travel Control Feature

  continuous motion

• Ambient Temp In Deg Celsius Per Section At Full Rated Power

  85.0 all sections

• Angle Of Mounting Hole In Deg

  90.0

• Terminal Location

  radially positioned over less than half the circumference

• Mounting Facility Quantity

  4

• Mounting Method

  threaded hole

• Shaft Runout

  0.001 inches

• Features Provided

  humidity proof

• Maximum Starting Torque

  4.50 inch-ounces

• Pilot Length

  0.10900 inches minimum and 0.14100 inches maximum

• Terminal Type And Quantity

  12 solder stud

• Undercut Width

  0.07300 inches nominal

• Electrical Resistance Per Section

  500.000 ohms c and better v.g. stepping

• Resistance Tolerance Per Section In Percent

  -1.0/+1.0 2nd section

• Resistance Tolerance Per Section In Percent

  -1.0/+1.0 3rd section

• Overall Length

  4.485 inches nominal

• Resistance Tolerance Per Section In Percent

  -5.0/+5.0 4th section

• Ambient Temp In Deg Celsius Per Section At Zero Percent Rated Power

  150.0 all sections

• Mounting Lip Diameter

  1.75500 inches maximum

• Body Length

  2.485 inches maximum

• Angle Between Centerlines Of Mounting Holes In Deg

  90.0

• Shaft Diameter

  0.250 inches nominal

• Function Conformity Tolerance Per Section

  -0.20/+0.20 all sections

• Body Style

  cylindrical servo mounted

• Mounting Lip Depth

  0.09300 inches nominal