1. Shutdown and safety preparation Complete shutdown: Oil level inspection and adjustment must be carried out with the reducer completely stopped. Oil splashing during operation will cause inaccurate oil level display. Cut off the power supply: To ensure personal safety, the power supply to the reducer must be cut off before operation, and the lockout and tagout (LOTO) procedure must be performed to prevent the equipment from accidentally starting. Wait for cooling: Wait for the reducer to cool down until there is no risk of burns, but it is best to keep it warm (about 40-50°C). At this time, the viscosity of the lubricating oil is low and the fluidity is good, which not only facilitates the discharge of old oil, but also allows the oil level reading to be more accurate. 2. Check and adjust the oil level to confirm the standard oil level: the normal static oil level of the DCY reducer should be maintained between 1/2 and 2/3 of the oil mark (oil window). Replenish lubricating oil: If the oil level is lower than the lower limit, new lubricating oil of the same brand as required by the equipment needs to be slowly injected from the oil filling port. Fill to the 2/3 position of the oil window and stop. Drain excess moisture Read More

1. Macroscopic fracture characteristics From a macro perspective, the fatigue fracture of a spline shaft can usually be clearly divided into three characteristic areas: 1. Fatigue source area. This is the initiation point of fatigue cracks. For spline shafts, due to the sudden change in geometry at the tooth root, severe stress concentration will occur, so the fatigue source is usually located on the tension side surface of the key tooth root. On the macroscopic fracture surface, this area usually appears as a relatively smooth and flat 'bright spot' or 'bright area'. 2. Fatigue expansion zone This is the area where cracks expand stably under the action of alternating stress. It is also the core macroscopic feature of fatigue fracture. This area will show alternating light and dark shell-like or beach-like stripes, also known as 'fatigue arcs' or 'shell lines'. The centers of these arcs point to the fatigue source, and their spacing can reflect the stress amplitude to a certain extent. 3. Instantaneous fracture zone: When the fatigue crack expands to a critical size and the remaining effective section cannot bear the load, rapid failure will occur. Read More

1. Disassembly and replacement steps 1. Preparation: Cut off the power supply and put up a 'Do Not Turn On' warning sign. Prepare the required tools, cleaning oil and spare parts that need to be replaced (such as bearings, oil seals, cycloidal wheels, etc.). 2. Oil draining and disassembly: Unscrew the oil drain plug at the bottom of the machine base and drain the lubricating oil inside the machine. Loosen and remove the fastening bolts connecting the machine base and the pin tooth housing, and separate the two parts. 3. Take out the internal parts: Take out the shaft pin sleeve, cycloid gear in sequence (note the position of the prefix marked on its end face), isolation ring, arm bearing (eccentric sleeve) and another piece of cycloid gear. If you need to replace the parts in the pin tooth housing, you can continue to remove the pin tooth pin and pin tooth sleeve. 4. Cleaning and inspection: Thoroughly clean all disassembled parts with cleaning oil. Carefully inspect each part for wear and identify parts that need to be replaced. For example, check whether there are cracks or pitting on the tooth surface of the cycloidal wheel, whether the pin hole of the pin tooth shell is worn too loose, whether the bearings and oil seals are Read More

1. Observe abnormal phenomena during operation. In daily use, if the following conditions occur, it usually indicates that the swing arm bearing may have been damaged or severely worn and needs to be replaced: Abnormal sound and vibration: The reducer makes obvious and irregular abnormal sounds (such as high-frequency 'clicking sound' or friction sound) during operation, or the vibration amplitude suddenly increases. Abnormal temperature rise: The temperature of the bearing part or reducer end cover rises sharply, and the temperature rise exceeds the normal range (usually the temperature rise should not exceed 45-60°C under load). Oil leakage: Due to bearing wear, the fitting clearance is too large, which may cause the shaft end oil seal to fail and cause oil leakage. 2. Conduct professional testing (before disassembly). Before deciding to dismantle the reducer, professional means can be used to make more accurate judgments to avoid blind disassembly: Vibration spectrum analysis: Use a vibration meter to conduct vibration spectrum analysis of the reducer. If the characteristic frequency of the bearing rolling elements, inner ring or outer ring appears in the spectrum diagram, Read More

1. RV reducer: Heavy-duty and impact-resistant 'tough guy' RV reducer combines a planetary gear and a cycloidal pinwheel structure, with high rigidity, large torque, high precision and strong resistance to overload impact. RV is suitable for palletizing equipment: Heavy-duty palletizing robot: It is specially used for heavy-load joints such as the base (waist) and big arm of the palletizing robot's robotic arm, which can withstand the weight of the goods and the inertial force of the robotic arm itself. Heavy-duty palletizing equipment: such as heavy-duty palletizing machines with a load of ≥200kg, or intelligent robot palletizing systems used to transport heavy materials such as bags of cement. RVSelection Tips for avoiding pitfalls: Accuracy matching: For high-precision stacking scenarios such as electronics and medicine, it is necessary to give priority to high-precision series (such as hysteresis ≤ 0.5 arcmin); if it is only for general overload scenarios, choose conventional series. Blindly pursuing high accuracy will significantly increase costs. Torque margin: When calculating the rated torque, a safety margin of 20%-30% must be reserved. Read More

1. Abnormalities in control programs and electrical systems Abnormalities in electrical and control parameters can lead to system misjudgments or insufficient power output, thus triggering overload protection. Feedback signal interference and misjudgment: Interference in the encoder signal, insufficient battery voltage, or mechanical zero offset may cause the controller to misjudge the position and output abnormal current commands. At this time, the motor is not actually overloaded, but the system triggers protection due to excessive closed-loop error. Power cable and joint failure: Long-term bending of the motor power cable may cause partial strand breakage, and the joints may become loose or oxidized due to frequent vibration. This will cause high impedance and voltage drop, causing the actual input power of the motor to be insufficient. The controller will continue to increase the output to maintain speed, eventually triggering overload. Improper setting of control parameters: If the acceleration and deceleration time of the drive module, overload protection settings and other parameters are not properly configured according to the actual working conditions, or the gain parameters and torque response speed of the servo system are not optimized for high loads, it is easy to cause the motor to start or stop or fail. Read More