Linear Stepper Actuator Guide

Lead Screw Linear Actuator Precautions Handling, Operation & Safety

Follow these handling, operating, and safety precautions to help protect lead screw linear actuators from damage, overheating, contamination, wiring issues, and premature wear.

Why Proper Handling Matters

Lead screw linear actuators integrate the motor and screw assembly. These components should be handled carefully to avoid damage to the screw, nut, motor, lead wires, and internal winding.

Proper actuator handling helps preserve grease, reduce contamination, protect lead screw surfaces, avoid side loading, and maintain the expected service life of the motion system. These precautions are especially important during installation, transport, testing, and maintenance.

Avoid Side Loading Radial force on the screw can damage the actuator and reduce accuracy or service life.
Protect Lubrication Do not wipe off factory grease or add unapproved lubrication to the screw and nut.
Use Rated Current Set RMS current to the rated motor current when using a chopper driver.

Operating Precautions

Handling & Installation

  1. Do not dismantle the motor under any circumstances.
  2. Do not apply radial force to the screw. Do not lift, hang, push, or pull the screw during use or transport.
  3. Do not drop the motor or screw during use, installation, or handling.
  4. Do not apply force or tension to the lead wire.
  5. Take measures to protect the lead screw surface from dust and contamination.

Lubrication & Environment

  1. Do not add lubrication to the nut and screw.
  2. Protect the existing grease from being wiped off.
  3. Do not use grease other than approved DINGS’ grease.
  4. Operate in ambient temperatures between -22°C and +55°C.
  5. Store at room temperature with relative humidity below 75% in a clean, well-ventilated area free from corrosive gases.

Driver & Current Settings

  1. When using a chopper driver, set RMS current to the rated motor current.
  2. Overdriving is not recommended without initial testing.
  3. Excessive current can overheat the motor and may cause coil damage.
  4. Confirm driver settings before continuous operation.

Load, Stroke & Lifetime

  1. For designed lifetime, actual load should be lower than 50% of the calculated data.
  2. Avoid missed steps, sticking, and stall conditions.
  3. Do not drive captive actuators beyond their designed stroke.
  4. Avoid impact, immediate stops, and abrupt starts whenever possible.

Safety Precautions

Stop Operation Immediately If Needed

  1. If abnormal odor, noise, smoke, overheating, or vibration occurs, stop operation immediately and turn off power.
  2. Do not exceed the motor’s rated current.
  3. The motor may overheat depending on load, speed, or driver used.
  4. Make sure the motor surface temperature does not exceed 80°C.

Electrical & Maintenance Safety

  1. Check wire connection, driver settings, and phase sequence before operation.
  2. Incorrect connection can lead to malfunction.
  3. Do not bend, pull, or pinch the motor lead wires.
  4. Disconnect the motor from the controller before dielectric withstanding voltage or insulation testing.
  5. Switch off the driver during inspection or maintenance.

Moving Components

  1. Do not touch moving parts during operation.
  2. Keep hands, tools, and loose materials away from the actuator while powered.
  3. Confirm safe travel range before testing motion.

Best Practice Before Startup

  1. Confirm rated current and driver settings.
  2. Verify wiring and phase sequence.
  3. Check that the actuator is mounted without radial force on the screw.
  4. Confirm the stroke range and load are appropriate for the actuator design.

Lead Screw Linear Actuator Handling

Lead screw linear actuator precautions include protecting the screw from radial loads, preserving factory lubrication, preventing dust contamination, using proper RMS current settings, avoiding overtravel on captive actuators, and following safe wiring and maintenance procedures. These practices help improve actuator reliability, reduce premature wear, and support safer operation in automation, medical, laboratory, packaging, and industrial motion systems.

Need Help With a Linear Stepper Actuator?

DINGS’ Motion USA can help review actuator sizing, load requirements, stroke, duty cycle, lead screw selection, driver setup, and custom motion requirements.

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