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(1) size limit
Bearing installation space is usually limited. In most cases, the shaft diameter (or bearing diameter) is based on the mechanical design or other design constraints. INA bearing type and size selection is decided in accordance with the inner diameter of the bearing. Thus, main dimensions standard tables are prepared in accordance with international standards for dimension of inner diameter. Standard bearing dimensions and range in mechanism design, you use standard bearings.
(2) bearing load
Imposed load on the bearing, its nature, the size, the direction is changing. Typically, the basic load ratings are displayed on the dimensions table. Axial and radial loads, and so on, INA bearing important factor in choosing the right. When you size of ball and roller bearings, needle roller bearings usually have high levels of vibration and shock loads and withstand greater load capacity.
(3) speed
Allowed speed depending on the bearing type, size, precision, cage type, load, lubrication, and cooling factors to determine. INA bearing table lists the standard precision bearing under oil lubrication and grease lubrication allows the rotational speed. Typically, deep groove ball bearings, self-aligning ball bearings and cylindrical roller bearings for high speed applications.
(4) bearing tolerances
Bearing dimensional accuracy and precision of rotate is a ISO and JIS Standards. For machinery requiring high precision and high speed operation, level 5 or above is recommended-precision bearings, deep groove ball bearings, radial ball bearings or cylindrical roller thrust bearings are suitable for high transfer precision machinery.
(5) rigidity
When INA bearing rolling element and the Raceway contact surface pressure on elastic deformation. Some mechanical elastic deformation needs to be kept to a minimum. Monks bearing of elastic deformation of roller bearings is small. In addition, in some cases to exert preloading of the bearings to increase rigidity. This procedure is typically used for deep groove ball bearings, radial thrust ball bearings and tapered roller bearings.
(6) the inner and outer rings bias
Shaft bows, shaft or bearing tolerances, combined with errors will cause the eccentricity of the inner and outer rings. To prevent an eccentric angle too large, self-aligning ball bearings, self-aligning roller bearings or spherical bearing-a better choice.
(7) the noise frequency and torque
INA bearings are manufactured according to high precision standards and the noise and torque in small, deep groove ball bearings and cylindrical roller bearings for low noise, low torque situations with special requirements.
(8) the erection and removal
Some applications require frequent removal and installation, to ensure that the periodic inspection and maintenance. Bearings inner and outer rings can be installed as: cylindrical bearings, needle roller bearing, and tapered roller bearing is applied to this situation. Taper hole of self-aligning ball bearings and self-aligning roller bearings sleeves help, also simplified installation procedures.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 4T-18590/18520 NTN | 41.275 | 73.025 | 17.462 |
| 4T-LM300849+/LM300811++ NTN | 40.988 | 67.975 | 18 |