4286780 Excavator Seal Kit , Ex200-3 Pneumatic Cylinder Seal Kit

Product Description:

• There are regularly three cylinders for the excavator, boom cylinder, arm cylinder, bucket cylinder.
• Boom cylinder is the one (or the two) near the cabin. Usually, there is one piece boom cylinder for the small excavator under 10-tun; the bigger excavator's two pieces boom cylinders. But there is an exception too when the driver will remove one piece for a special purpose, say at some particular working place, it is convenient to work by one cylinder. Soft remind: all refit job should be operated by an experienced technician.
• Arm cylinder is the top one, and it's usually be called as top cylinder;
• Bucket cylinder is the one that connects and controls the bucket.
• Hydraulic cylinder seal kits are used to seal the gap between different parts of the hydraulic cylinder. The function of hydraulic cylinder seal kits is to prevent oil leakage, to assure the working pressure of the hydraulic system, to maintain its power.

• - The nature of appliEion
  - Fluid to be sealed

  Minimum , maximum and working fluid pressures

  Minimum , maximum and working teperatures

  Shaft speed and lubricant used
  Estimated toal annuad demand and weekly call-off

  The Role of Each Part

  A. Lip end (sliding surface): The lip end is in the shape of a wedge and presses the shaft surface at the end to seal the fluid.
  B. Sealing lip: It is a flexible elastomer, designed to ensure that it can maintain a stable sealing effect under the influence of mechanical vibration and pressure fluctuations of the sealing fluid, and maintain a stable contact state with the shaft surface at the end of the lip effect. In addition, the spring can increase the pressing force of the sealing lip on the shaft, which prevents the intrusion of dust.
  C. Dust-proof lip: The dust-proof lip is an auxiliary lip that is not connected to the spring, and plays the role of preventing dust intrusion.
  D. Fitting part: While fixing the oil seal to the cavity hole, the fitting part plays the role of preventing fluid leakage and intrusion from the contact surface between the outer peripheral surface of the oil seal and the inner surface of the cavity. In addition, the metal skeleton plays the role of fixing the oil seal on the cavity and maintaining the matching force.

Description :