The Importance of Preventive Maintenance and Care for OTC Daihen V Series Welding Robots
In automated continuous arc welding production lines, the OTC DAIHEN V Series industrial robots (covering classic models such as V6, V6L, V8, V20, etc.) bear high-intensity dynamic trajectory interpolation and all-weather operation under harsh working conditions. As the operating hours accumulate, the robot’s core mechanical transmission components (RV reducers, crossed roller bearings, synchronous toothed belts) and electrical pipelines (coaxial cables, encoder batteries) will inevitably experience physical wear, grease degradation, and metal fatigue.
“Maintenance over repair” is the core principle to ensure a high uptime rate for welding workstations. If the official periodic maintenance is not strictly executed, it is highly prone to result in increased reducer backlash (trajectory drift), a sharp increase in wire feeding resistance (E-210 alarm), or even the loss of the encoder zero point (A5010 alarm). To assist workshop equipment supervisors in establishing a standardized, high-precision maintenance system, we have deeply organized the daily inspection and medium-to-long-term major maintenance items for the OTC official V series robots as follows:
I. Full Life Cycle Maintenance and Care Schedule for OTC V Series Robots
The table below details all key maintenance nodes from “Daily Pre-Shift Inspection” to “6-Year Limit Overhaul”. This grid table adopts a high-definition solid border design, which maintenance personnel can directly print out as the workshop inspection standard for execution (items with a ★ are high-risk core maintenance items):
| No. | Inspection / Maintenance Part | Hidden Danger Items and Inspection Content | Standard Corrective Measures and Maintenance Actions | Official Designated Execution Cycle |
|---|---|---|---|---|
| 01 | Robot Overall Appearance | Welding slag, metal dust, or acidic oil stains adhering to the surface. | Visually inspect and clean using waterless compressed air or a dry cloth. | Daily (Pre-Shift Inspection) |
| 02 | Built-in Coaxial Cable & Gas Hose | Outer sheath wear, interference twisting, or gas hose aging and leakage. | Readjust the routing posture, replace the protective sheath, and detect gas leakage pressure. | Monthly (or every 250 hours) |
| 03 | ★ Absolute Encoder Battery | Battery voltage drops below 3.2V, causing A5010 zero point data loss. | Keep power ON and fast-replace the original backup lithium battery pack (e.g., L8292V00). | Annually (or immediately upon alarm) |
| 04 | Cooling Fan & Vents | Fan stalling or dust blockage in vents causing servo amplifier high-temperature breakdown. | Remove the cover plate, blow out dust, and replace fans with abnormal bearing noise. | Every 6 Months (or every 1,500 hours) |
| 05 | J1 to J3 Axis RV Reducer Grease | Grease carbonization, coking, and drying out, causing gear wear and excessive backlash. | Fully extract old oil and inject original VIGOGREASE RE0 special robot grease. | Every 3 Years (or every 10,000 hours) |
| 06 | J4 to J6 Axis Harmonic Gearbox Grease | Loss of lubrication capability under high-speed reversing, leading to severe joint vibration. | Extract old grease and quantitatively inject original SK-2 special harmonic gear grease. | Every 3 Years (or every 10,000 hours) |
| 07 | ★ Internal Synchronous Toothed Belts | Belt tooth dropping, elongation, or snapping, causing sudden loss of positioning capability. | Use a sonic tension meter to calibrate tension; completely replace severely worn belts. | Every 4 Years (or every 15,000 hours) |
| 08 | Machine Body Zero-Position Calibration (TCP) | Mechanical components experience micro-displacement after long-term vibration or collision. | Execute multi-point posture fitting calibration in the “Constant Setting” background. | Annually (or after collision) |
High-Risk Error-Proofing Warning for Robot Mechanical Transmission Lubrication Replacement:
- Strictly Prohibit Mixing Counterfeit Greases: The core transmission systems of the OTC V series (RV reducers and harmonic gears) have extremely demanding requirements for grease viscosity and extreme pressure additives. Do not abuse low-cost automotive or ordinary industrial yellow greases. Injecting non-original grease will undergo shear deterioration under the extreme loads of the robot, directly leading to gear teeth spalling, irreversible degradation of ±0.05mm positioning accuracy, and even resulting in scrapping of the entire arm casting. Please strictly use official
VIGOGREASE RE0andSK-2. - Pay Attention to Pressure Relief Limits During Oil Change: When injecting grease into the internal joints of the robot via a pneumatic grease gun, the injection speed must be rigorously controlled, and the exhaust port (pressure relief plug) must remain fully open. If the injection pressure is too high and exhaust is blocked, the excessive internal cavity pressure will rupture the reducer oil seal, causing massive grease leakage into the servo motor stator cavity, which will instantly burn out the servo motor due to insulation failure.
️ Fast Access to Official Consumables for Preventive Maintenance and Overhaul Technical Support
The long-term high-uptime operation of the OTC Daihen V Series industrial robot stems from meticulous preventive maintenance mechanisms. If your workstation requires periodic maintenance, or is experiencing joint vibration, trajectory deviation, or gear noise, you are welcome to provide your specific robot model and operating hours. We will directly supply the latest official original spot quotes for special reducer grease (RE0 / SK-2), absolute encoder lithium batteries, coaxial built-in cables, synchronous toothed belts, and sealing ring repair kits: