Generally, the space where NSK Bearing type kind can be installed is limited. In most cases, the shaft diameter (or inner diameter of NSK bearing) is limited by mechanical design or other design.
Therefore, the selection of NSK bearing type and size is determined according to the inner diameter of NSK bearing type kind.
Therefore, the main dimension tables of standard NSK Bearings are prepared according to the international standard inner diameter dimensions. Standard NSK Bearings come in many sizes and forms,
Standard NSK Bearings type kind are used in the design of mechanical devices (this is designed to make NSK bearings easy to purchase. Here’s a digression.
Some NSK bearing catalog models do have some, but some non-standard NSK bearings are not available in Chinese mainland, and sometimes futures will be very long time.
So when NSK bearing Type Kind is selected
The load of NSK bearing type and the load applied to NSK bearing type kind should be considered when considering the cost of time and the cost of later replacement. The nature, size and direction are changeable. In general, the rated base load is shown on the dimension table.
However, axial load and radial load are also important factors in selecting suitable NSK Bearings type kind.When the ball and needle roller bearings have the same size, needle roller NSK Bearings type kind usually have high load capacity and bear large vibration and impact loads.
Second, Nsk Bearing Type Kind speed.
The allowable speed is determined according to NSK bearing type kind, size, accuracy, cage type, load, lubrication mode, cooling mode and other factors.
The NSK bearing type kind table lists the allowable speed of standard precision
NSK Bearings type kind under oil lubrication and grease lubrication. Generally, deep groove ball bearings, self-aligning ball bearings and cylindrical roller bearings are suitable for high-speed operation. Thirdly, NSK bearing tolerance. NSK bearing type kind dimensional accuracy and rotation accuracy are based on ISO and JIS standards.
For machines requiring high precision and high-speed operation, it is recommended to use NSK Bearing type kind with precision of grade 5 or above.
Deep groove ball bearings, centripetal thrust ball bearings or cylindrical roller bearings are suitable for machines with high operation precision.
Rigid, elastic deformation will occur when the contact surface of rolling element and raceway of NSK bearing type kind is compressed. Some machines need to minimize elastic deformation. Roller bearings produce less elastic deformation than ball bearings.
In addition, Nsk Bearing Type Kind
In some cases, NSK Bearings type kind are preloaded to increase rigidity. This procedure is usually used for deep groove ball bearings, centripetal thrust ball bearings and tapered roller bearings. Inner and outer ring offset, shaft bending, tolerance change of shaft or NSK bearing housing, and matching error will lead to inner and outer ring eccentricity.
In order to prevent excessive eccentric angle, self-aligning ball bearing, self-aligning roller bearing, or self-aligning bearing seat are better choices. Voice frequency and torque, rolling bearings are manufactured according to high-precision standards, so voice and torque are small.
Deep groove ball bearings and cylindrical roller bearings are suitable for occasions with special requirements for low noise and low torque. Installation and disassembly. Some applications require frequent disassembly and installation to ensure regular inspection and maintenance.
NSK Bearings type kind with separate inner and outer rings, such as cylindrical bearings, needle roller bearings and conical bearings, are very suitable for this occasion. With the help of the shaft sleeve, the installation procedure of the taper hole self-aligning ball bearing and self-aligning roller bearing is also simplified.
On many occasions, the bore size of Koyo bearings has been specifically limited by the structure of the machine or device.
Regardless of whether the working life, static load coefficient and economy meet the requirements, the size calculation must be carried out before the final selection of other sizes and structural forms of Koyo bearings.
The calculation includes comparing the actual load of Koyo bearing with its load capacity. The static load of Koyo bearing refers to that the Koyo bearing is static after loading (there is no relative movement between the inner and outer rings) or the rotation speed is very low. In this case, calculate the coefficient of excessive plastic deformation of raceway and rolling element.
Most Koyo bearings are subjected to dynamic load, and the inner and outer rings move relative to each other. The early fatigue damage coefficient of raceway and rolling element is checked by dimensional calculation.
Only in special cases can the nominal service life be calculated according to DIN ISO 281. For the design that pays attention to economic performance, we should make full use of the bearing capacity of Koyo bearing as much as possible. The more we want to make full use of Koyo bearings, the more important it is to calculate the accuracy of Koyo bearing size selection.