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Correct use of KOYO bearings and common problems
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The correct use of KOYO bearings is to ensure bearing defects and extend the reliability of KOYO bearing life; its content contains the correct equipment and reasonable smoothness. The following professors analyze the bearing requirements for us.
1. KOYO bearings should be cleaned and cleaned before KOYO bearing equipment; special tools should be used to press the auxiliary bearing straight and evenly; do not hit with a hammer; uniquely stop directly on the KOYO bearing. When the bearing When the ring and the seat hole cooperate loosely; the seat hole should be corrected or the KOYO bearing should be replaced; do not use the method of playing the hemp point or the copper pad on the bearing cooperation external surface. The KOYO bearing should be pulled by the appropriate puller when the bearing is opened. Out; do not hit KOYO bearings with chisels, hammers, etc.
2. KOYO bearings smooth KOYO bearings commonly used smoothing agents are smooth oil and smooth grease two. When the circumferential speed of the shaft is less than 4-5m / s; or the car can not use smooth oil smooth parts; are smooth grease smooth and smooth The smoothness of the grease is a simple seal layout; smooth grease is not easy to lose; it is not affected by temperature; adding a smooth grease can use a longer time.
The use of smooth grease should pay attention to two problems; first, according to the requirements of the car manual; choose smooth grease suitable for the trademark. For example; automotive water pump bearings should not use nano-smooth grease; because of its poor water resistance. Second, participate in KOYO bearings The smooth grease in the excess should be excessive; generally only fill the 1/2-l/3 of the KOYO bearing cavity; too much is useless; it will also add the working resistance of the KOYO bearing; make it heat up. The unique thing to note is the car. Wheel bearing; to initiate "empty hub smooth"; that is, only apply a layer of excess smooth grease on KOYO bearings; otherwise; not only bad and bad heat; it will also make smooth grease overflow; can affect the braking function.
The smooth strength of smooth oil is frictional resistance. 20. è‹Œ (4) 龋 饕糜诟咚俸 饕糜诟咚俸 饕糜诟咚俸 ã·éª° 澄 澄 澄 å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å© å©After releasing the old oil, it is necessary to remove the new oil after the arrangement is removed; the fueling should be added to the regular marking line; or it should be flush with the fueling port (depending on the detailed layout of the car and the demand);
The accuracy of the cage assembly is ensured by the special assembly tires; it can fully ensure the assembly precision requirements of KOYO bearings. The condition of adopting small interference cooperation on the fixed ring is that the surface has high shape precision and small roughness on both sides; otherwise it forms It is more difficult to disassemble the equipment; in addition, it is necessary to consider the influence of the thermal elongation of the main shaft.
External heat treatment is divided into two categories; one is external quenching and tempering heat treatment using vibration absorption or vibration isolation equipment to reduce KOYO bearing noise or blocking KOYO bearing noise; the other is chemical heat treatment; its hardness inspection method is as follows: chemical heat treatment is to make The surface of the workpiece enters the atom of one or several chemical elements; then the chemical composition, arrangement and function of the external appearance of the workpiece are modified. After quenching and low temperature tempering; the workpiece has high hardness, wear resistance and touch fatigue strength; The core has high resistance.
The primary technical parameters of the chemically heat treated workpiece are the depth of the hardened layer and the hardness of the surface. The depth of the hardened layer is still to be checked with a Vickers hardness tester. The interval from the appearance of the workpiece to the point where the hardness drops to 50 HRC. This is the useful hardening depth. Chemistry The hardness of the heat-treated workpiece is in the vicinity of the hardness test of the workpiece with external heat treatment; the noise of the rolling bearing is that the KOYO bearing itself can be detected by Vickers hardness tester, appearance Rockwell hardness tester or Rockwell hardness tester; only nitriding Thick thickness is better than that of 悴 悴 笥 笥 0. 7mm; then Rockwell hardness tester can no longer be used. If the part has high hardness requirements; partial hardening heat treatment can be carried out by induction heating; such parts are generally in the drawings The azimuth and partial hardness values ​​of the partial quenching heat treatment are marked on the surface. The hardness of the part is to be tested in the specified area. The hardness tester can be selected from the Rockwell hardness tester; the HRC hardness value is tested.
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Aluminum alloy skirting line,Skirting Board, light Baseboard,aluminum corner extrusion is a new decorative material or replacement product of modern decoration. Like the skirting lines of all materials in the past, it plays a role in visual balance, beautifying decoration, corner and ground protection in the decoration space. With the development of social economy and the improvement of quality of life, the quality requirements of human living space are also changing. Decorative materials are also being rapidly updated. Aluminum alloy has the characteristics of high die-casting yield, compact casting, high strength, no fracture, strong flexibility, good copper plating and coloring effect, light specific gravity and good decoration effect. Concise, fashionable, beautiful and environmentally friendly, more and more are used in the decoration industry.
The aluminum alloy skirting line is an all aluminum L-profile product. The profile has a height of 6cm, 8cm and 10cm, and each length is 3M. The two fixed buckle grooves and waterproof rubber strip grooves on the back ensure the flatness of the product. The popular colors in the market include bright wire drawing, champagne wire drawing, titanium wire drawing, coffee wire drawing, black titanium wire drawing, gun color wire drawing, purple gold wire drawing and various spray oxidation.
Aluminum alloy skirting line is equipped with special internal and external corner accessories and fasteners.
1. Observe whether the corner ground and wall are flat. If it is not flat, level it with a shovel and clean it. Otherwise, the skirting line will be bent and uneven after being installed, and some will not be fully close to the wall, leaving ugly gaps.
2. Then saw a section of 15 cm long aluminum alloy skirting line, clamp the buckle on the groove on the back, lean against the wall and mark the hole of the buckle.
Before drilling, observe the wiring direction of water and electricity to prevent errors. The interval between boreholes shall not be too large, and it is generally about 40cm.
Drill holes in the wall with special tools, and then nail them into the newly drilled holes with plastic. Fix the buckle on the wall with screws. 3. The convex corner of the wall is called the external corner, and the concave corner is called the internal corner. The installation of internal and external corners is to draw the fixed point position on the wall with internal and external corners, then take holes and nail plastic, and then fix the internal and external corners on the wall corner with screws.
Note: since the pipes of hydropower projects are buried on the wall, the position of the pipe is directly below the switch socket. The position shall be calculated during drilling to avoid damage.
4. Finally, measure the size distance of each section with a tape measure, cut the corresponding size with a cutting machine and clamp it on the corresponding buckle. The length of each aluminum alloy skirting line is 3M. When exceeding the length of the skirting line, a fastener shall be installed in the middle of the interface to ensure the flatness of the skirting line.
The skirting line,Skirting Board, light Baseboard,aluminum corner extrusion should be completely close to the wall without leaving gaps, which is more beautiful, especially in the corner. The flatness of the wall shall be tested before installation.
Aluminium Skirting Board,Light Baseboard,Aluminum Corner Extrusion,Aluminium Tile Baseboard
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