In order to ensure maximum safety and reliability, regardless of the age long should regular checks of NTN Bearing, note whether there is wear and tear of early warning signals: including any rotation of the friction noise or suspension wheel assembly turn deceleration is not normal .
Here's the point of view under which warning, suggesting that the fault may occur:
1to hear the noise issued by the NTN site, first of all, it is important to find the noise occurred. There are many moving parts that may generate noise, it could be a number of rotating parts and rotating parts, contact. If the confirmation is a bearing noise, may have been damaged and need replacing.
2 because of the similar working conditions before both sides of the failure, so even if the only one is bad also recommended replacing them in pairs.
3. NTN more sensitive, in any case need to adopt the right approach and the right tools. Bearing parts can not be damaged in storage, transportation and installation process. Require greater pressure on the indentation, so they need special tools. Be sure to refer to the manual.
4. The installation should be in a clean environment, the small particles into the bearing life will be shortened. Replacement to maintain a clean environment is very important. Not allow the tap with a hammer, be careful not to fall to the ground (or similar improper handling). Response to the shaft and seat status to be checked prior to installation, even if it is slight wear and tear can lead to with the bad, causing damage.
5. Do not attempt to disassemble the NTN or adjust ring, otherwise it would ring damage lead to the entry of water or dust. Even the ring and inner ring raceway are being damaged.
6. Equipped with ABS ring, a magnetic thrust ring, thrust ring can not be collision, impact or collision with other magnetic field. Remove from the box prior to installation, so that they stay away from the magnetic field, such as use motors or power tools.
7. Many NTN Bearing is sealed; do not need the entire life of the grease. Not sealed, such as double row tapered roller must be installed and grease lubrication. Cavity of different sizes, it is difficult to determine to increase the number of oil, if too much fat, when the bearing rotates, the excess grease will be oozing. General Experience: At installation time, the total amount of fat accounted for 50% of the gap.