1: ntn bearing support seal:ntn bearing support sealing means bearing external, such as ntn bearing shell parts, shaft parts, and cover part of the additional sealing devices.Bearing seals in the choice of bearings should be considered when the bearing lubricant type (fat or oil), sealing contact with the surface of the circular speed, bearing misalignment, and many other factors.

Ntn roller bearings on the metal shavings and other foreign bodies are particularly sensitive, ntn bearing Once foreign body, will result in large intermittent vibration and noise, will lead to early damage. In addition, ntn roller bearings impurities due to metal clips, also prone to the possibility of early damage. Even if the damage does not occur early, rolling ntn bearing life there are certain limits. In short, ntn roller bearings life shorter than the slide ntn bearing

More top tight radial method used in radial load bearing tapered hole, the typical example is the double row precision cylindrical roller bearings, using nuts to adjust the tapered journal bearing relative to the axial position, so that within circle have the right volume by radial expansion of the negative clearance, the method for machine tool spindle and multi-jet engine.Axial preload law tightening and positioning in general can be divided into two constant pressure preload.

ntn bearing angular contact ball bearings is mainly used in machine tool spindle. In most cases, locking the outer ring of this bearing the mouth and can not seal the resulting circular groove, so many used in the machine spindle angular contact ball bearings can not be used for other hosts as the other bearings as lubrication.If installing a set of auxiliary lubrication system, not only to increase costs and make the structure more complex machine.

How to correctly install the demolition of cylindrical bore bearings to the heart:1. Install: Usually, the outer ring can not be separated to the heart bearings, inner ring and the shaft often with a more compact; outer ring and the seat is a more loose with the hole. At this point the pressure will be available first press installed in the shaft bearings,and then loaded with bearing housings with coaxial holes. Press-fit sleeve assembly used with a soft metal such as copper or mild steel can.

 ntn bearing lubrication methods introduced 41, oil ring lubrication: lubrication only way for the horizontal axis. By hanging in the shaft and can rotate the ring to the oil pool oil into the bearing. Applicable to medium-speed shaft diameter greater than 50mm and high-speed bearings. Oil ring preferably seamless, bearing wide-diameter ratio less than 2, may use only one oil ring, Otherwise required two oil ring.

2 common Plain Bearings1, split bearings split bearing, the bearing housings, bearing caps, bushing (divided into upper and lower tile) and connecting bolts and other components. Subdivision bearing surface should be close to vertical loading direction, most bearing surface is split level, there are oblique.Bearing cap and bearing of the subdivision surface often Zuocheng ladder for work positioning and prevention of dislocation.

1: ntn bearing the international standards:China Bearing Industrial Association (CBIA)American Bearing Manufacturers Association (ABMA)American National Standards Institute (ANSI)Japanese Industrial Standards Committee (JISC)Standards Engineering Society
International Organization for Standardization (ISO)Scandinavian Bearing Association (SBA)German National Standards Organization (DIN)
Japanese Standards Association (JSA)Typically, ntn bearing the criteria used are ISO standards.