The clearance meets the 3 groups specified by the standard

NR-FAG bearing with stop groove and stop ring on the outer ring. FA——Steel solid cage, outer ring guide. Mainly refers to cylindrical roller FAG bearings and deep groove ball FAG bearings with inner diameter d>60mm. LA——Light metal solid cage with outer ring guide. Example: 6207N. Example: 6207. Example: GS.2ZRN.790144-FAG bearing can be used for high temperature and low speed, after special heat treatment, steel stamping and riveting cage, large clearance, after phosphating treatment, grease injection, the service temperature can exceed 270℃. M, M1-brass solid cage.

A or B is placed after the cage code, A means the cage is guided by the outer ring, and B means the cage is guided by the inner ring. Post code-Clearance C1-Clearance meets the standard requirements of 1 group, less than 2 groups.3541). Example: NU207V.ZB. N-FAG bearing with stop groove on the outer ring. For example, 31314A. For example, B7004C. VT——Full complement rolling element FAG bearing with isolation ball or roller.160——6212FAG bearing, axial clearance 120μm to 160μm. Example: 6207ZRN.

K2——Two sets of deep groove ball FAG bearings are installed in pairs to bear bidirectional axial load. Example:Mechanical roller bearings manufacturers 6207. K30-taper bore FAG bearing, taper 1:30. K7-Two sets of angular contact ball FAG bearings are installed back to back without clearance (O-type installation).ZB-cylindrical roller with convexity with a diameter greater than 80mm.

FP——Steel solid window type cage.20——6210FAG bearing, radial clearance 10μm to 20μm.81108R-FAG bearing without separable inner ring or outer ring.HG.K5. K4——Two sets of deep groove ball FAG bearings are installed face to face without clearance (X-type installation). WS-Thrust cylindrical roller FAG bearing ring. .K5.81112. Example: 2308K. When installing bearings belonging to the same group, the installation should be carried out in accordance with the markings and positioning lines.

C3——The clearance meets the 3 groups specified by the standard, and is greater than 0 group. Z52JN.F3. Post code-Sealing and dustproof RSR-FAG bearing has a sealing ring on one side.HG clip cloth handed to the pocket solid cage, outer ring guide, accuracy grade HG

The temperature difference between the inner and outer rings is large

When the shaft is moved with a crowbar to make the shaft in two extreme positions, the difference between the dial indicator readings is the axial clearance of the bearing. The size of the clearance (called the working clearance) during operation has an impact on Wholesale roller bearing manufacturers the bearing's rolling fatigue life, temperature rise, noise, vibration and other properties. 2. The matching of the outer ring of the bearing and the housing hole.

When the rotation accuracy is high or the axial displacement needs to be strictly limited, a small clearance group should be used. The operation method is the same as the method for checking radial clearance with a plug, but the axial clearance should be c=λ/(2sinβ) where c——axial clearance, mm; λ——thickness of feeler gauge, mm; β——bearing cone angle, (°). Note: The reduction in radial clearance is related to the actual effective interference of the matching parts, the matching shaft diameter, and the wall thickness of the housing hole.

However, the force applied to the crowbar cannot be too large, otherwise the shell will be elastically deformed, even if the deformation is small, it will affect the accuracy of the measured axial clearance. The bearing clearance standard is not regulated by the country and depends on the use situation: it is still a very complicated problem, which is briefly described as follows: A. This method is used when the shaft end is exposed.

Bearing clearance is also called bearing clearance. When the shaft end is closed or cannot be checked with your fingers for other reasons, you can check whether the shaft rotates flexibly. Check with a dial indicator.. A tighter fit is adopted, the temperature difference between the inner and outer rings is large, and the friction torque needs to be reduced. According to the direction of movement, it can be divided into radial clearance and axial clearance