During the installation and use of single row tapered roller bearings, the following safety precautions must be strictly followed to ensure stable operation of the equipment and avoid personal injury:
1. Preparation before installation
Environmental cleaning
It must be operated in a dry and dust-free environment to prevent dust, metal shavings and other impurities from entering the interior of the bearing, otherwise it will accelerate wear and shorten the bearing life. Before installation, clean the bearings and installation surface with gasoline or kerosene to remove impurities such as grease and rust, ensuring a smooth mating surface.
Tool selection
Use specialized tools (such as sleeves, hydraulic presses) to evenly apply pressure during installation. Do not directly tap the bearing end face, otherwise it may cause cracking of the inner ring or damage to the raceway.
.Avoid using existing tools instead of specialized tools to prevent installation deviations caused by tool mismatches.
.Lubrication Treatment
Choose anti-oxidation and anti rust lubricating grease (with a filling amount of 30% -60% of the bearing volume), and it is recommended to use synthetic lubricating grease in high-temperature environments.
. Insufficient lubricating grease can lead to increased friction and temperature rise; Excessive amounts may cause leaks and contaminate equipment.II. Installation Process Specification
Split Installation
The inner ring component (including rollers and cage) of a single row tapered roller bearing needs to be press fitted onto the journal, and the outer ring should be separately installed into the bearing seat hole.
. When press fitting, the sleeve should be pressed against the outer ring end face to ensure that the pressure is evenly distributed on the inner ring end face of the bearing, avoiding deformation caused by single point force. Clearance AdjustmentSingle row bearings need to adjust the axial clearance by adjusting the nut or gasket, and high-speed equipment needs to reserve a reduction in clearance caused by temperature rise (usually increased by 0.02-0.05mm).
.Use a dial gauge to accurately detect axial clearance, avoiding excessive clearance (causing vibration) or insufficient clearance (leading to heating and jamming).
Direction recognition
Cone roller bearings need to be installed in pairs to balance axial forces. Pay attention to keeping the direction of the cage consistent with the load distribution to prevent uneven force due to incorrect direction.
.III. Precautions during use
Avoid impact loads
It is strictly prohibited to apply strong impact to the bearing during operation (such as sudden start, emergency stop), otherwise it will cause scratches, indentation, and even cracks and fractures.
.Avoid overloading or frequent impact, prevent track indentation or cage breakage.
.Temperature Monitoring
The temperature of the bearing should not exceed 80 ℃. If there is abnormal heating, the machine should be stopped immediately to check lubrication or clearance.
. High temperature environments may cause bearing jamming due to lubrication failure, while low-temperature environments require prevention of grease solidification.Sealing Protection
Regularly check the sealing components to prevent mud, water, straw debris, and other debris from entering the interior of the bearing, otherwise it will accelerate wear and cause corrosion.
. Agricultural machinery and other outdoor equipment need to be lubricated every 500 hours, and in high temperature or dusty environments, it can be reduced to 200 hours.IV. Personal Protection and Operating Procedures
Wear protective equipment
Wear goggles during operation to prevent metal debris and grease from splashing into the eyes.
. Wear cut resistant gloves to avoid direct contact between hands and bearings, and prevent sweat from causing corrosion (salt in sweat can accelerate metal corrosion).Standardized operating procedures
Installation and disassembly should be carried out in accordance with regulations to avoid violent operations that may cause damage to bearings or equipment.
.Use a pulling tool to separate the inner and outer rings. Do not directly strike with a hammer to prevent damage to the mating surface of the shaft and seat hole.
.Fifth, Maintenance and Inspection
Regular Inspection
Observe whether the raceway and rollers are evenly worn, and determine whether the bearing seat needs to be replaced or the journal needs to be repaired.
.Check the condition of the lubricating grease. If it shows black particles or dries up, it needs to be replaced immediately.
.Long term shutdown treatment
Long term shutdown equipment requires anti rust treatment (such as applying anti rust oil) to the bearings to avoid exposure to humid environments.
. After the busy farming season, thoroughly clean the bearings, check the elasticity of the sealing rings, and replace hardened or cracked seals.