China Ningbo Bearings Manufacturer

Top Roller Bearing Installation Clean and Disassembly

02.22.2012 in Blog by admin

Top Roller Bearing is the axis of rotation of the rolling bearing assembly. The rings and rolling elements are processed through sophisticated. Bearing at the factory, in order to protect the raceway and the rolling surface is not corroded, in between the raceway and rolling into the anti-rust oil or grease rust. Therefore, the bearing should be cleaned before installation. With anti-rust oil sealed bearings can be used directly to clean gasoline or kerosene; rust oil or grease with thick rust, must first with light mineral oil, such as 10 # transformer oil heating oil or grease will melt after cooling, then gasoline or kerosene. Both sides with a dust cover or seal the ball bearings, the grease at the factory prior to accession, so when you do not have to clean install. Dual-purpose grease coated with grease lubricated anti-rust bearings, installation, nor do they need cleaning. Installed in the cleaning process, should prevent foreign bodies falling into the bearings, due to small abrasive particles will lead to between rolling element and raceway wear and tear, increased noise and vibration.

Assembly and Disassembly of roller bearings, mainly through two ways. First, the interference ring onto the shaft or bearing pressed into the hole; First, by heating up a large diameter bearing it, or cooling the bearing outside diameter to shrink, will be easily mounted on the shaft or bearing seat hole to push in. When using compression mode, mechanical or fluid pressure will force through a dedicated device to be directly on the assembly and disassembly of the seat, and never allowed to pass through the rolling force loading and unloading. Otherwise it will cause the surface of the raceways and rolling indentation, resulting in increased noise and vibration damage. If used for heating or cooling assembly and disassembly, should strictly control the heating temperature or cooling temperature. Because the strength of bearing surface microstructure of the metal surface by the impact of the structure, the temperature is too high will cause tempering effect; over the bottom temperature can cause embrittlement of the metal surface. Typically the heating temperature should not exceed 100 ℃, the cooling temperature not end at the bottom of minus 50 ℃. Also to be considered to be evenly heated.

Practice has proved that, bearing improper installation damage leading to premature bearing one of the reasons. The assembly and disassembly of the ring with the interference is a very difficult, so the design of supports, we must consider how to dismantle and easy to dismantle the bearing problem. For heavy machinery assembly and disassembly of large bearings often need to design special equipment. If you need to remove the corresponding high-pressure oil circuit design, piping and pumps.

Tags: Ball Bearing, Bearing installation, Roller Bearing