Industrial shaft seals

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gab.ru Radial Берг shaftАБ seals bergab@ya.ru Тел. (495)-228-06-21, факс (495) 22 Type HS seal mounted to retain lubricant Different ways of mounting HS seals HS seals are mounted in different ways depending on which purpose they are supposed to fulfil. The can e.g. either be mounted to retain lubricants or to exclude foreign materials (fig 59). Type HS seal mounted to exclude foreign material Type HS seals in tandem arrangement for maximum lubricant retention Fig 59. Ways of mounting HS seals gab.ru 88 Берг АБ bergab@ya.ru Тел. (495)-228-06-21, факс (495) 22
gab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21, Industrial факс shaft seals (495) 22 Mounting split HS seals Coat the HS seal and shaft counterface with a lubricant, preferably the same as that to be retained by the seal (A, fig 60, page 90). Where appropriate, insert the spring in the Spring-Lock groove and position the spring connection, so that it is displaced with regard to the seal joint (B). Put the HS seal in the correct position on the shaft. If necessary and if portable vulcanisation equipment is available, use this to join the ends of the HS seal, making sure that the ends are accurately aligned (C). Join the ends of the garter spring in two different ways depending on the type of spring connector (D): Threaded spring connector Turn the spring ends through approximately three turns, one in the opposite direction to the other. Insert the one end into the other and, because they have already been turned, the ends will screw into position. Further tightening is possible if required, although the connection will hold even if the thin section is not completely screwed into the other end. Hook-and-eye spring connector Draw the ends of the spring together and insert the hook into the eye, taking care not to over-stretch the spring in the process, as this might impair seal performance. Springs with control wire connector: draw the ends of the seal together and insert the control wire into the other end of the spring. Starting at the 3 and 9 o’clock positions, push the rest of the seal into position (E), finishing simultaneously at the 6 and 12 o’clock positions. For shaft diameters of 1 200 mm (47 in) and above it may be preferable to fix the seal in the 12, 3, 6 and 9 o’clock positions before pushing home the remaining sections of the seal. The seal in the housing bore is pushed until it contacts the housing shoulder, e.g. using a small block of wood. Check the seal condition, particularly at the joint. Put the end cover in position on the housing wall using the screws. Tighten the screws in turns, tightening opposite screws together, until the end cover abuts the housing wall (F and G) . Multiple seal installation When mounting two split seals in one cavity, the locations of the split joints should be staggered 30° to 60°. This will minimize the risk of leakage through the joint. The splits should be located towards the top of the bore. Grease the cavity between the seals to provide lip lubrication for the outer seal. Position the seal joint on the shaft so that it is in the 12 o’clock position and push the joint into the housing bore (E). gab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21, факс (495) 89 22
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Industrial shaft seals

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