Servo Controllers | McMaster-Carr

Reduce the size and complexity of your stepper motor setup—these motors have a driver built in, so you don’t need to run cable to a standalone driver.

Face-Mount Speed-Control Motors

Set and maintain the speed of these motors with the included speed control, which automatically adjusts the power based on feedback from a built-in sensor. They bolt directly to gearboxes, pumps, and other machinery.

Programmable Base/Face-Mount
Speed-Control Motors

These speed-control motors combine a variable-frequency drive and motor into one, saving space in your control panel and reducing the amount of wiring required.

Programmable Face-Mount Speed-Control Motors

A variable-frequency drive and motor in one unit, these motors save space in your control panel and require less wiring than separate drives and motors. They bolt directly to gearboxes, pumps, and other machinery.

Programmable Base-Mount Speed-Control Motors

Save space in your control panel with a variable-frequency drive and motor in one unit. These motors require less wiring than motors that need to be attached to a separate drive.

Rotary Electric Actuators with Automated Controls

With a stepper motor and driver built in, these actuators come ready to use for clamping, sorting, and ejecting tasks.

Programmable Logic Controllers

Communication Modules for
Programmable Logic Controllers

Connect and communicate with multiple automation devices simultaneously, such as HMIs, motor speed controls, supervisory PCs, and additional PLC racks. These modules allow several systems to talk to one another—within your facility and beyond—letting you expand your automated processes over numerous interconnected networks.

Expansion Modules for
Programmable Logic Controllers

No need to program multiple PLCs—these modules expand your automated system, keeping everything conjoined and configured on one processor. Use them when you’re out of space on your DIN rail or need additional input/output functions.

Motor Speed Controls

Reversing Enclosed AC to
DC Motor Speed Controls

Use these controls with motors that run forward and backward, such as motors for conveyor belts.

Enclosed AC to DC Motor Speed Controls

Reversing Washdown Enclosed
AC to DC Motor Speed Controls

Use these controls with motors that run forward and backward, such as motors for conveyor belts.

Washdown Enclosed AC to
DC Motor Speed Controls

A NEMA 4X rated enclosure protects these controls from corrosion and washdowns.

AC to DC Motor Speed Controls

Convert AC input voltage into DC output voltage and control the speed of permanent-magnet DC motors.

Low-Voltage DC Motor Speed Controls

Control the speed of low-voltage permanent-magnet DC motors.

Washdown Programmable
Three-Phase AC Motor Speed Controls

Rated NEMA 4, these controls are protected from washdowns.

DIN-Rail Mount Programmable
Three-Phase AC Motor Speed Controls

Mount these controls to DIN rail inside a control panel.

Three-Phase AC Motor Speed Controls

Manually control a motor's speed.

Programmable Three-Phase
AC Motor Speed Controls

Set these controls to automatically adjust motor speed.

Potentiometers

Harsh Environment Potentiometers

Rated NEMA 13, these potentiometers protect against debris and splashing oil and coolant.

Linear Motion Potentiometers

Pair these potentiometers with a controller to monitor the position of moving parts or send instructions to an electrical system.

Potentiometers

Vary electrical flow to control speed, volume, and light intensity. Also known as variable output switches.

Digital Potentiometers

More precise than analog potentiometers, these have a three-digit display that is easy to read.

Variable-Speed Foot Switches

When the pedal is pressed, the built-in potentiometer adjusts the resistance to vary the speed for motor drives.

Solenoid Flow-Adjustment Valves

Compact Solenoid Flow-Adjustment Valves

Available in smaller pipe sizes than other solenoid flow-adjustment valves, these are often used with gas chromatography equipment and analytical instrumentation. They adjust and regulate flow based on the intensity of the electrical signal into the valve. They're often integrated into PLC systems for automatic control over the valve position based on system conditions.

Solenoid Flow-Adjustment Valves

Also known as proportional solenoid valves, these adjust and regulate flow based on the intensity of the electrical signal into the valve.

Electric-Powered Motion and Control

Stepper Motor Controllers and Drivers

Stepper Motors with Integrated Motion Control

Stepper Motors with Driver

Face-Mount Speed-Control Motors

Programmable Base/Face-MountSpeed-Control Motors

Programmable Face-Mount Speed-Control Motors

Programmable Base-Mount Speed-Control Motors

Rotary Electric Actuators with Automated Controls

Programmable Logic Controllers

Communication Modules forProgrammable Logic Controllers

Expansion Modules forProgrammable Logic Controllers

Motor Speed Controls

Reversing Enclosed AC toDC Motor Speed Controls

Enclosed AC to DC Motor Speed Controls

Reversing Washdown EnclosedAC to DC Motor Speed Controls

Washdown Enclosed AC toDC Motor Speed Controls

AC to DC Motor Speed Controls

Low-Voltage DC Motor Speed Controls

Washdown ProgrammableThree-Phase AC Motor Speed Controls

DIN-Rail Mount ProgrammableThree-Phase AC Motor Speed Controls

Three-Phase AC Motor Speed Controls

Programmable Three-PhaseAC Motor Speed Controls

Potentiometers

Harsh Environment Potentiometers

Linear Motion Potentiometers

Potentiometers

Digital Potentiometers

Variable-Speed Foot Switches

Variable-Speed Foot Switches

Solenoid Flow-Adjustment Valves

Compact Solenoid Flow-Adjustment Valves

Solenoid Flow-Adjustment Valves

Programmable Base/Face-Mount
Speed-Control Motors

Communication Modules for
Programmable Logic Controllers

Expansion Modules for
Programmable Logic Controllers

Reversing Enclosed AC to
DC Motor Speed Controls

Reversing Washdown Enclosed
AC to DC Motor Speed Controls

Washdown Enclosed AC to
DC Motor Speed Controls

Washdown Programmable
Three-Phase AC Motor Speed Controls

DIN-Rail Mount Programmable
Three-Phase AC Motor Speed Controls

Programmable Three-Phase
AC Motor Speed Controls