Yaskawa Robot Lubrication and Maintenance Guide
Release time:
2026-05-15 15:34
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Yaskawa Robot Lubrication and Maintenance Guide
Maintenance and lubrication of Yaskawa robots is a very important task, directly related to the robot's service life, operational accuracy, and stability. The following is a detailed guide on Yaskawa robot maintenance and lubrication grease, including grease types, lubrication points, schedules, procedures, and precautions.
1. Core principle: Follow the official manual.
The lubrication requirements of Yaskawa robots may vary slightly depending on the model and load. The most accurate reference is the "Maintenance Manual" that comes with your robot. The following information is a general guide, applicable to most Motoman series robots (such as GP, HP, AR, YR, MH, etc.).
2. Main lubrication points and recommended greases:
Yaskawa robots primarily use the following types of grease:
2.1 Reducer grease (most critical)
MOLYWHITE RE No.00
Or VIGO GREASE REO
Location: Reducers for all axes of the heavy-duty robot (J1-J6);
Reducers for axes J1-J4 of a low-load robot.
2.2 Gear grease (for the wrist area of the robotic arm)
HARMONIC GREASE SK-1A
Or HARMONIC 4B NO.2
Location: J5/J6 shaft drive gear, usually located inside the wrist housing.
2.3 Bearing/Guide Lubricating Grease
ALVANIA EP GREASE 2
Location: Balance cylinder bearing, guide rail (if any), and some connecting bearings.
3. Standard lubrication cycle (for reference):
First oil change for the reducer: after 2,000 hours of operation or 1 year (whichever comes first). This is a very important initial maintenance.
Change the gearbox oil regularly: then every 6,000 hours or 1 year (adjust according to work intensity and environment; for 24-hour operation, it is recommended to shorten the cycle).
Wrist gear lubrication: Replenish or replace every 4,000 hours or 1 year.
Balance cylinder/bearing lubrication: Replenish every 2,000 hours or 6 months.
Note: In harsh operating conditions such as dust, high temperature, high humidity, and continuous operation, the lubrication cycle should be shortened by at least half.
4. Lubrication and maintenance steps in summary:
Preparation:
4.1 Safety first! Move the robot to the predefined maintenance position (usually each axis at 0 degrees or an easily operable angle) and execute the power off, lock, and tag procedures.
4.2 Prepare the correct amount of grease, a grease gun (manual or electric), a clean cloth, and a container for collecting waste grease.
4.3 Clean the oil and dust around the grease nipple and vent.
Reducer lubrication (taking replacement as an example):
1) Drain old oil: Locate the drain port at the bottom of the reducer (usually with a screw plug), open the drain port and the vent at the top to completely drain the old oil.
2) Add new grease: Use a grease gun to inject new grease through the grease port (grout nozzle) on top of the reducer until clean new grease overflows from the drain port below. This ensures that the old grease is completely replaced.
3) Sealing: First tighten the drain plug, then pull out the grease gun and tighten the grease nozzle cap/plug. Clean the surrounding area.
4) Trial run: After powering on, run each shaft back and forth several times at low speed to ensure that the grease is evenly distributed in the reducer.
Wrist gear lubrication:
1) Remove the outer cover of the wrist (note that there may be cables inside).
2) Remove the old grease and apply new grease evenly to the tooth surfaces of all gears.
3) Install the cover plate back, and check the condition of the sealing ring.
5. Important Notes:
5.1 Mixing is strictly prohibited! Different brands and models of grease must never be mixed. Differences in chemical composition may cause a drastic decrease in performance or the formation of deposits. If you need to change brands, the old grease must be completely removed.
5.2 Use a dedicated oiling nozzle. Make sure the oil gun connector fully matches the robot's oiling nozzle to prevent contamination and damage.
5.3 Better to have less than more, and measure precisely. Too much grease can cause excessive internal pressure in the gearbox, damaging the oil seals. Always follow the principle of "stop when fresh grease overflows from the vent."
5.4 Record it! After each maintenance, write down the date, hour, type and amount of lubricant used on the robot's maintenance record sheet for tracking purposes.
Summarize:
Lubrication and maintenance of Yaskawa robots are central to preventative maintenance. The key lies in using the correct grease, operating at the correct intervals, and using the correct methods. Using high-quality grease and following proper maintenance procedures will significantly reduce losses due to equipment downtime and high repair costs. Please always adhere to the official Maintenance Manual as the final standard.
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