High standard 6200 ball bearing

The friction pair and the working environment (humidity) should be considered. Under normal circumstances, if the transfer speed of grease is increased by 2000r/min, its life will be reduced by about half.1. When adding grease, squeeze out the waste grease until you see new grease at the grease outlet. (3) The selected grease should be compatible with the load. At high speeds, a grease with a large penetration degree made of low-viscosity base oil should be selected; for low-speed grease, you should choose Grease with high penetration grade made of high viscosity base oil.

3 grease should be used. It is an important factor affecting the service life of grease. Main performance indicators of grease ①Drop point: refers to the temperature at which a certain fluidity is reached when heated under specified conditions. In the environment of strong chemical medium, synthetic oil grease resistant to chemical medium such as fluorocarbon grease should be selected. (7) Do not use wooden or paper containers to package grease to prevent oil loss and hardening, mixing with moisture, or being contaminated and deteriorated, and should be stored in a cool and dry place.

Remove waste grease and clean the parts. In this way, the variety of grease is reduced, the management of grease is simplified, and the cost of grease can be reduced due to the long service life of pleiotropic grease, and maintenance costs can be reduced. When the use temperature is high, the grease with good oxidation resistance, low evaporation loss and high dropping point should be selected; when the use temperature is low, it should be selected Grease with low starting torque and similar viscosity, such as grease based on synthetic oil. , Cone penetration is reduced and hardened,

after a certain 69 Series Ball Bearings, the grease will completely fail; under the action of mechanical shear, the structure of the grease will be destroyed (such as soap fiber detachment or orientation), causing its softening, decrease in consistency and precipitation The increase in oil volume will eventually lead to failure. In addition, moisture, dust, and harmful gases in the environment where the grease is used are also important factors that degrade it. (4) The selected lubricating grease should be compatible with the environmental conditions used

Y-bearing with eccentric locking 68 Series Ball Bearings is mainly suitable for applications where the rotation direction is inconvenient to fix. On one side of the inner ring of the bearing, there is an eccentric extension that fits with the locking ring. Rotate the locking ring on the extension of the inner ring in the direction of rotation to lock the ring and the bearing to the shaft. Use a flat head (fixing) screw to further fasten the collar to the shaft. SKF can provide two standard series: one is Y-bearing of YET2 series, the inner ring is extended on one side, and strong Superagriseal seals are fitted on both sides.

The eccentric locking ring is coated with a galvanized layer. The standard outer ring has two lubrication holes. The inner ring of YEL2 series Y-bearing extends on both sides. This helps reduce the degree of tilt of the inner ring to the shaft and makes the bearing run more smoothly. These bearings are equipped with sturdy standard Superagriseal seals and one of the following two types of oil retaining rings: oil retaining rings made of ordinary steel, with the designation suffix 2F. Steel plate oil baffle ring with rubber sealing lip (multiple seal), the model suffix is ​​2RF.

The outer ring has two lubrication holes as the standard form. SKF can also provide bearings without refueling holes according to customer requirements. These bearings are indicated by the suffix W. This type of SKF bearings include bearings for metric shafts, with a diameter range of 15-60mm and bearings for inch shafts, with a diameter range of 1/2-215/16 inches.

When cutting high manganese steel, the leading deflection angle should be smaller, which can increase the heat dissipation area of ​​the tool and the strength of the tip, and the secondary deflection angle should not be too large. When choosing cemented carbide tools, generally take κr=25°～45°, κ′r=10°～20°. When the rigidity of the process system is good, take a small value; otherwise, increase the main and secondary deflection angles appropriately. When ceramic tools are used, the entering angle can be larger, generally κr=45°～60°, and κr=60°～90° for fine tuing. (3)