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61N8-31320 2713-9037
YASSIAN or Your's
Maintenance methods for drag sprockets of construction machinery
The maintenance of the drag sprocket (idler wheel) of construction machinery is crucial for ensuring the stable operation of the track system. It requires a combination of lubrication, cleaning, inspection and environmental adaptation measures. The specific methods are as follows:
I. Daily cleaning and maintenance
Remove surface impurities
Use a soft cloth or brush to clean the oil stains, soil and crushed stones on the surface of the wheel body, and avoid scratching the sealing surface with hard objects. After working in a damp environment, the wheels should be cleaned immediately to prevent impurities from hardening and blocking their rotation.
Inner cavity deep cleaning
Regularly rinse the inner cavity of the drag chain wheel with a low-pressure air gun, and dissolve the oil stains with a neutral cleaner. It is strictly forbidden for strong acid/alkaline solvents to corrode the sealing parts.
️ II. Lubrication system maintenance
Special lubricant:
Select high-viscosity lubricating grease suitable for construction machinery (such as lithium-based grease), and avoid damaging metal or nylon components with lubricants containing acidic or alkaline components.
Cycle and operating specifications
Regular equipment : Add grease every quarter. Clean the grease injector before oiling to ensure that the grease fills the shaft sleeve clearance (0.05-0.08mm).
High-frequency operation equipment : Shorten to monthly lubrication, with a focus on lubricating the contact surface of the chain rail and the bearing area.
III. Inspection and Maintenance of Key components
Sealing test
Check whether the floating oil seal is leaking oil or has sand and mud entered. Test the sealing pressure (standard 0.4MPa/1 minute). If it fails, replace it immediately.
Wear and deformation assessment
Track contact surface : Measure the depth of the groove on the wheel body. If the wear exceeds 15% of the original thickness or cracks appear, it must be replaced.
Bearing and connecting shaft : Shake the wheel body to check the axial clearance. If it is loose by more than 0.5mm, tighten or replace the shaft sleeve.
Track tension coordination adjustment
Keep the sag of the branches on the track within the range of 8 to 15mm. Uneven tension will cause accelerated wear on one side of the drag sprocket.
️ IV. Maintenance in special environments
High humidity/corrosive environment
Stainless steel drag sprockets should be coated with anti-rust oil every six months. After the slurry work, check whether the drainage holes are blocked.
Low temperature and dust environment
Clear the ice from the wheel grooves in icy and snowy weather to prevent them from getting stuck.
Increase the frequency of cleaning in dusty areas to prevent fine sand from entering the bearings and accelerating wear.
⚠️ operation and maintenance precautions
Abnormal diagnosis : If abnormal noise or vibration occurs during operation, first check whether the drag sprocket is unevenly worn or the bearing is damaged.
Load management : to prevent overloading operation from causing deformation of the wheel body due to overload, the weight of the pipelines should be evenly distributed.
Shutdown storage : when idle for a long time, clean and apply anti-rust oil, and store in a dry and dark place to prevent the rubber sealing parts from aging.
Following the above regulations can extend the service life of the drag sprocket by more than 30% and reduce the failure rate of the track system at the same time.
Maintenance methods for drag sprockets of construction machinery
The maintenance of the drag sprocket (idler wheel) of construction machinery is crucial for ensuring the stable operation of the track system. It requires a combination of lubrication, cleaning, inspection and environmental adaptation measures. The specific methods are as follows:
I. Daily cleaning and maintenance
Remove surface impurities
Use a soft cloth or brush to clean the oil stains, soil and crushed stones on the surface of the wheel body, and avoid scratching the sealing surface with hard objects. After working in a damp environment, the wheels should be cleaned immediately to prevent impurities from hardening and blocking their rotation.
Inner cavity deep cleaning
Regularly rinse the inner cavity of the drag chain wheel with a low-pressure air gun, and dissolve the oil stains with a neutral cleaner. It is strictly forbidden for strong acid/alkaline solvents to corrode the sealing parts.
️ II. Lubrication system maintenance
Special lubricant:
Select high-viscosity lubricating grease suitable for construction machinery (such as lithium-based grease), and avoid damaging metal or nylon components with lubricants containing acidic or alkaline components.
Cycle and operating specifications
Regular equipment : Add grease every quarter. Clean the grease injector before oiling to ensure that the grease fills the shaft sleeve clearance (0.05-0.08mm).
High-frequency operation equipment : Shorten to monthly lubrication, with a focus on lubricating the contact surface of the chain rail and the bearing area.
III. Inspection and Maintenance of Key components
Sealing test
Check whether the floating oil seal is leaking oil or has sand and mud entered. Test the sealing pressure (standard 0.4MPa/1 minute). If it fails, replace it immediately.
Wear and deformation assessment
Track contact surface : Measure the depth of the groove on the wheel body. If the wear exceeds 15% of the original thickness or cracks appear, it must be replaced.
Bearing and connecting shaft : Shake the wheel body to check the axial clearance. If it is loose by more than 0.5mm, tighten or replace the shaft sleeve.
Track tension coordination adjustment
Keep the sag of the branches on the track within the range of 8 to 15mm. Uneven tension will cause accelerated wear on one side of the drag sprocket.
️ IV. Maintenance in special environments
High humidity/corrosive environment
Stainless steel drag sprockets should be coated with anti-rust oil every six months. After the slurry work, check whether the drainage holes are blocked.
Low temperature and dust environment
Clear the ice from the wheel grooves in icy and snowy weather to prevent them from getting stuck.
Increase the frequency of cleaning in dusty areas to prevent fine sand from entering the bearings and accelerating wear.
⚠️ operation and maintenance precautions
Abnormal diagnosis : If abnormal noise or vibration occurs during operation, first check whether the drag sprocket is unevenly worn or the bearing is damaged.
Load management : to prevent overloading operation from causing deformation of the wheel body due to overload, the weight of the pipelines should be evenly distributed.
Shutdown storage : when idle for a long time, clean and apply anti-rust oil, and store in a dry and dark place to prevent the rubber sealing parts from aging.
Following the above regulations can extend the service life of the drag sprocket by more than 30% and reduce the failure rate of the track system at the same time.
