The hydraulic cylinder seals how to install?

Before the installation, should first check the sealing surface quality, cannot have flash. Burr, crack, is trimming. Porosity and defects such as osteoporosis, seal geometry size and precision all want to Miniature Slip Rings accord with a standard to ask.
Hole combination sealing ring with the o-ring and wear-resisting of ring. Because o-ring elastic bigger, installation is easy; and wear-resisting ring elastic is bad, if installed directly is the steps, the piston to scratch the surface of the seal grooves, affect the sealing effect.

To ensure that wear-resisting ring installation without being damaged, should take certain measures of installation. Wear-resisting ring mainly by filling polytetrafluoroethylene (PTFE) material is made, has the characteristics of corrosion resistance, thermal expansion coefficient is bigger, so before installation in the 100 ℃ in the oil for 20 min, make its gradually become soft, then use figure 2 shows the tooling with loading of the piston in groove. Figure 2 shows the positioning sets up and fixtures of composition. Positioning set five º angle pouring head, used to Capsule Slip Rings direct the o-ring and wear-resisting with loading at the end of the piston ring groove.

Set up by elastic good 65 Mn steel made by heat treatment, processed into uniform symmetrical 8 disc structure. Note that each disc at the bottom of the hole processing, dividing uniformly, milling open the disc should make JuKou aimed at the center of the holes, in order to ensure that each disc can even up set up open. At the same time, each place should be made (smooth) chamfering, lest damage sealing ring. Each kind of specification of the sealing ring should be a corresponding tooling to ensure that it is assembly requirements. After the installation is complete don't allow sealing ring is distorted, becoming wrinkly, scratch and put the phenomenon exists. The hydraulic cylinder cylinder, cylinder thread in the hole in the welding process often arranges after processing, this will inevitably be threaded hole in export and cylinder wall at the junction of produce burr. For the removal burr, must design the special cutting tools to make the processing, to achieve the purpose of a smooth transition. Special cutting tools of structure see chart 4. When using, the first knife stem from the threaded hole into, and then from the side will be installed in the head tool rod, rotating knife stem can take away and work out smooth deburring complete surface. Another type of seal is the material polyurethane sealing ring Y form because of its high hardness and high elastic, oil resistance, abrasion resistance and low temperature resistance, etc, widely used in hydraulic oil cylinder. Its inside and outside lip with or hole according to the shaft can be made with different sizes to shape a seal and their own protection. Lip "Y" pattern circle with different sizes, the shorter lip and sealing surface contact, sliding friction small resistance, good abrasion resistance, long life. Long lip with the relative motion surface have larger the compression, at work there still. Because of polyurethane material Y shape circle high hardness, the compression, installation, replaced by the sealing ring is often "crowded broken, rolled and bite border damage phenomenon, which should be not a sealing effect, and even failure. Assembly, we used a screwdriver along the cylinder size will the sealing lip to pressure; Or with fine wire will seals tightly bound the lip, make its outer diameter less than the inner diameter of the cylinder, and then will sealing ring to send people in cylinder, again will fine wire spare. But the two are easily will scratch outfit law sealing ring, lead to sealing failure, increased maintenance time. In view of this situation, we use 0.

LMM thick cold rolling with or TongPi will cut into the square, its length equal to the Y form the circumference of the outer circle, then use it will seal up tight, and then bit by bit for hydraulic cylinder cylinder, to Rotary joint the lips mouth all into the cylinder again after the spare, install the effect is good.