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BUCKET CYLINDER SEAL KIT , Model Name/Number: BUCKET CYLINDER SEAL KIT

  • (Customer Reviews)
Overview

While the Boom holds the weight and the Arm provides the reach, the Bucket Cylinder (also called the "tilt" or "curl" cylinder) is the "front-line" component. It faces the most direct vibration, impact shocks, and abrasive debris because of its proximity to the digging action.

A Bucket Cylinder Seal Kit is specifically engineered to handle high-frequency cycling and the "shaking" motion used to dump sticky material.

Component Specialized Function for Bucket
Heavy-Duty Wiper Often has a reinforced metal shell to knock off "caked-on" mud or asphalt that sticks to the rod during curling.
Buffer Seal Critical. Acts as a shock absorber when the bucket hits a rock or solid object, preventing pressure spikes from blowing the main seal.
Piston Seal Usually a 4-piece or 5-piece assembly to ensure a tight seal during rapid "curling" and "dumping" motions.
Rod Seal High-tensile Polyurethane designed to stay flexible even when the rod gets hot from constant high-speed use.
Wear Rings Often made of Nylon or Phenolic resin to absorb the side-loads caused by "crowding" the bucket into a pile of rock.

 

  • High-Frequency Resilience: The bucket is constantly adjusted. The seals are designed for "short-stroke" durability, where the rod moves back and forth rapidly in a small area.

  • Contamination Defense: Because the bucket rod is closest to the ground, the Wiper Seal is the most important feature. Premium kits use a "Double-Lip" Wiper—one lip keeps dirt out, and the other keeps a thin film of oil in to lubricate the rod.

  • Shock-Load Resistance: When a bucket teeth hit a buried boulder, a massive "spike" of pressure travels back to the cylinder. The Buffer Ring in a bucket kit is specifically shaped to "vent" this spike safely.

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