Stepper Ball Screw Linear Actuator
Ball Screw Linear Actuator Precautions
Review these ball screw linear actuator handling, operating, safety, environment, lubrication, and maintenance precautions before installation or use.
Precautions for Handling and Operating
This product integrates the motor and ball screw. Repair is not possible for either component, so the actuator should be handled with care to prevent motor or screw damage.
Operating Precautions
- Before use, read the instruction manual and follow all listed precautions.
- Do not hit or drop the shaft. Do not apply axial or radial loads exceeding specifications.
- Before use, confirm the product has no defects and matches your order.
- Do not disassemble components. Dust may enter the product and reduce accuracy.
- Prevent contamination from dust or swarf. Contamination may damage the ball screw and reduce performance.
- Lubrication is required during ball screw operation. Check lubrication every 2 to 3 months. If grease is contaminated, remove the old grease and replace it.
- Do not use the motor beyond specified load or speed ratings.
- Do not allow the ball screw nut to over-run. Over-running may cause balls to escape, damage recirculation parts, or create raceway indentation.
- Do not hold or pull the motor lead wire.
- Motor torque and speed characteristics may vary depending on load conditions or the driver used.
- The motor may have a resonant point within the specification range. Avoid operating at resonance.
Safety Precautions
- If abnormal odor, noise, smoke, overheating, or vibration occurs, stop operation immediately and turn off power.
- Do not exceed the motor’s rated current.
- The motor may overheat depending on load, speed, or driver. Confirm the motor surface temperature does not exceed 80°C.
- Check wire connection, driver, and phase sequence before operation. Incorrect connection may cause malfunction.
- Do not bend, pull, or pinch motor lead wires.
- Do not touch moving parts during operation.
- Disconnect the motor from the controller before dielectric withstanding voltage or insulation testing.
- Switch off the driver during inspection or maintenance.
Operating Environment
- Use in an environment of 0 to 40°C and 20 to 80% RH.
- Do not use in environments with dew condensation, corrosive gas, or flammable gas.
- Do not use near strong electric fields or strong magnetic fields.
- Protect the actuator from swarf, oil mist, cutting fluid, water, moisture, salt spray, organic solvent, and other contaminants.
- Do not use the motor in vibration, impact, vacuum, or other special environments unless reviewed for the application.
Ball Screw Protection
- Prevent dust and dirt entry. A protective device should be used to prevent contamination during operation.
- When the ball screw is exposed on equipment, use a closed protective cover such as a coil spring steel tape sleeve, telescopic sleeve, or folding sleeve.
- When installing a protective cover, connect one end to the ball nut side and secure the other end to the ball screw support seat.
- If the ball screw is installed in a position requiring sealing, use sealing rings on both ends of the nut. Contact and non-contact sealing ring types may be used.
Ball Screw Lubrication
- Ball screw pairs typically use lithium-based grease or spindle oil for lubrication.
- Lubricating grease is generally applied to the thread rolling area and nut housing space.
- Spindle oil can be injected through an oil hole in the nut housing.
- Replace grease every six months during use. Clean out old grease and apply new grease.
- For ball screw pairs lubricated with spindle oil, oil once before each machine operation.
Need Application Help?
- Confirm load, speed, duty cycle, stroke, environmental exposure, and lubrication requirements before selecting a ball screw linear actuator.
- Contact DINGS’ Motion USA for support with sizing, customization, clean room requirements, or integration questions.