Chains and sprockets are wearing parts. Inadequate daily maintenance will lead to common faults including chain elongation, sprocket tooth wear, chain breakage and tooth jumping, which will disrupt normal production. Here we share a set of easy-to-follow daily maintenance and inspection solutions based on practical experience.

1. Regular Lubrication to Reduce Friction Loss

Lubrication is the core of maintenance. Select dedicated chain lubricating oil or grease according to working conditions. For general equipment operating at room temperature, replenish lubricant every 50 to 100 working hours. Shorten the lubrication cycle for dusty and high-temperature environments. Clean dust and debris on the chain surface before lubrication to prevent impurities from entering friction surfaces and worsening wear. Never use inferior engine oil or waste oil, as they will cause component corrosion.

2. Routine Inspection to Eliminate Hidden Risks

• Chain Inspection: Regularly measure chain elongation. Replace the chain immediately when the elongation rate reaches 2% to 3% to avoid tooth jumping and disengagement. Check link plates, rollers and pins for cracks, rust and deformation.
• Sprocket Inspection: Examine the wear condition of sprocket teeth. Replace the sprocket at once if there are obvious depressions, unilateral wear or broken teeth. Also check the coaxiality of two sprockets — misalignment is the primary cause of unilateral sprocket wear.

• Tension Adjustment: Keep the chain properly tensioned. Excessively tight chains increase load and wear, while loose chains tend to vibrate and come off. Adjust chain tension regularly in accordance with equipment specifications.

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3. Environmental Protection & Standard Operation

Install protective covers for equipment operating in dusty or corrosive environments. Avoid long-term overloading and sudden impact loads, which will drastically shorten the service life of components. Cut off the power supply and follow safety operation regulations before equipment inspection and part replacement.