FAG bearing supplement code

Core Tip: Common bearing code FAG's bearing code consists of basic code, pre-code and post code. The basic code indicates the basic type, structure and size of the bearing. Preamble code indicates axis
Common bearing code FAG's bearing code consists of basic code, pre-code and post code. The basic code indicates the basic type, structure and size of the bearing. The leading code indicates that the bearing part is placed before the basic code. The post code indicates the supplemental code added after the basic code of the bearing when the bearing structure shape, size, seal, cage, tolerance, clearance, heat treatment, packaging, technical requirements, etc. are changed. 1 Pre-coded The pre-code R is placed directly before the bearing basic code, and the remaining pre-codes are separated from the basic code by small dots. GS—Thrust cylindrical roller bearing race. Example: GS.81112 K – Assembly of rolling elements and cages. Example: K.81108 assembly of thrust cylindrical roller and cage. R – without bearings that separate the inner or outer ring. Example: RNU207 - NU207 bearing without inner ring. WS—Thrust cylindrical roller bearing shaft ring. Example: WS.81112. 2 Post-code The post-code is placed after the base code. When there are multiple sets of post-codes, they should be arranged from left to right in the order of the post-codes listed in the bearing code table. Some post-codes are separated from the base code by small dots. (1) Internal structure A, B, C, D, E internal structural changes Example 1: angular contact ball bearings 7205C, 7205E, 7205B, C-15 degree contact angle, E-25 degree contact angle, B-40 degree contact angle . Example 2: Cylindrical roller, spherical roller and thrust spherical roller bearings N309E, 21309E, 29412E - reinforced design, improved bearing load capacity. VH-roller self-locking full-roller cylindrical roller bearing (the round diameter of the roller is different from the standard bearing of the same type). Example: NJ2312VH (2) External dimensions and external structure of the bearing DA-separable double row angular contact ball bearing with double inner ring. Example: 3306DA DZ-cylindrical outer diameter roller bearing. Example: ST017DZ K-cone hole bearing, taper 1:12. Example: 2308K. K30-cone bore bearing with a taper of 1:30. Example: 24040K30. 2LS- double inner ring, double row cylindrical roller bearing with dust cover on both sides. Example: NNF5026C.2LS.V- internal structure change, double inner ring, dust cover on both sides, full roller double row cylindrical roller bearing. Bearings with snap grooves on the N-outer ring. Example: 6207N. NR-bearing bearing with snap groove and snap ring on the outer ring. Example: 6207NR. N2-contact ball bearing with two stop grooves on the N2-outer ring. Example: QJ315N2. S-outer ring bearing with oil groove and three lubrication holes. Example: 23040 is. Spherical roller bearings with a bearing outer diameter D of 320 mm or more are not marked with S. The X-outer dimensions conform to international standards. Example: 32036X. Z..-Technical conditions for special structures. Arrange sequentially from Z11. Example: Z15-stainless steel bearing (W-N01.3541). The ZZ-roller bearing has two retaining rings that guide the outer ring. (3) Sealing and dustproof RSR-bearings have a sealing ring on one side. Example: 6207RSR. The ZR-bearing has a dust cover on one side. Example: 6207ZR. 2ZR-bearings have sealing covers on both sides. Example: 62072ZR. The ZRN-bearing has a dust cover on one side and a stop groove on the outer ring on the other side. Example: 6207ZRN. The 2ZRN-bearing has a dust cover on both sides and a snap groove on the outer ring. Example: 62072ZRN. (4) Cage and its materials 1) Solid cage. After A or B is placed in the cage designation, A indicates that the cage is guided by the outer ring and B indicates that the cage is guided by the inner ring. F-steel solid cage, guided by rolling elements. FA-steel solid cage with outer ring guide. FAS-steel solid cage with outer ring guide and lubrication groove. FB-steel solid cage with inner ring guide. FBS-steel solid cage with inner ring guide and lubrication groove. FH-steel solid cage, carburized and quenched. H, H1-carburized quenching cage. FP-steel solid window cage. FPA-steel solid window cage with outer ring guide. FPB-steel solid window cage with inner ring guide. FV, FV1-steel solid window holder, after aging, quenching and tempering treatment. L-light metal solid cage, guided by rolling elements. LA-light metal solid cage with outer ring guide. LAS-light metal solid cage with outer ring guide and lubrication groove. LB-light metal solid cage with inner ring guide. LBS-light metal solid cage with inner ring guide and lubrication groove. LP-light metal solid window cage

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Detecting the quality of INA bearing lubricants from the noise used in lubrication

The three simplest detection methods for lubricating oil are: oil spot method, color discrimination method and honing method.

Oil spot method:

The oil to be inspected is evenly mixed and dropped on a white paper (preferably a filter paper) to form oil spots, and the oil spots gradually diffuse from the center outward for about 2 to 3 hours to form three concentric rings. The state of the oil can be discerned based on the color, width and shape of the three areas.

Color discrimination method:

Normal is brown and blue black. If it is milky yellow, it indicates that diesel oil or water is added to the oil and should be replaced in time. If it is dark black, it indicates that the oil has deteriorated and must be replaced in time.

Honing method:

Remove a little oil from the low shell of the oil, apply it on your fingers, and rub it with your fingers and thumb. If you feel that there is impurities in the oil or that it is not sticky like water, or even hairy or sour, the oil has deteriorated. If you can see a small shiny metal grinding on your finger after honing, it means that the engine has a serious wear part, and it also means that the oil must be replaced immediately.

1. Low temperature high speed bearing grease

At present, the equipment using INA bearings is becoming more and more refined, and the grease used for bearings must have the following properties:

(1) It has the same operating life as the bearing, prolongs the maintenance cycle, shortens downtime and improves labor productivity.

(2) Under the high speed of dn>5×105, it is necessary to ensure that the motor temperature rises low and does not lick oil, thus reducing power consumption and protecting the motor.

(3) The impurity content is controlled under certain standards to minimize the pollution of equipment noise to the environment.

(4) Guarantee the flexibility of starting and running the bearing under ultra-low temperature working conditions to ensure the minimum output power.

2. General low noise motor bearing grease

In the INA bearing industry, this grease is used in the largest amount, accounting for about 70% of the total grease. Because this type of grease uses a soft, easy-to-filter lithium soap as a thickening agent, using mineral oil as a base oil, it is easy to meet the requirements of low and medium-end bearings to reduce the vibration value. Another advantage is that it has good pumpability, whether it is mechanical fatliquoring or manual grease application.

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