HOW TO MAINTAIN A PLUNGER CYLINDER IN FORKLIFT TRUCKS



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Published by Seals-Shop on 12-04-2019

About the Mobile Hydraulic Equipment Sector
 

From pumps and valves to cylinders, mobile hydraulics have become an integral part of our daily lives and find applications in many different industrial areas. Often taken for granted, these devices provide the power to lift heavy loads, exert high forces for clamping or pressing and to accurately position a wide range of mechanical arms.

Mobile hydraulics are one of the most important components of forklift trucks. These vehicles are regularly used, which means that the truck and its many pieces need constant maintenance and repair, which can greatly affect efficiency of the machine.

In the following example, we will focus on the maintenance of a plunger cylinder in forklift trucks assumed to be operating in temperatures ranging from -10°C to 95°C.

Maintenance of a Forklift Plunger Cylinder
 

The plunger cylinder is a single-acting cylinder used for lifting. It is installed in an upright position such that when the control valve is switched to the lowering position, the weight of the carriage (with or without a load) forces the fluid back through the return lines, allowing for smooth lowering.

Once a forklift plunger cylinder needs to be replaced, our recommended solution for the rod seals is a polyurethane primary seal, a high-strength nylon wear ring, and a polyurethane scraper seal. The combination of Zurcon® Rimseal, Himod® Slydring® and Zurcon® Scraper DA22 provides an economical, high-performance sealing solution for this type of hydraulic cylinder. If you require a smaller rod seal, you could also use the Zurcon® U-Cup RU9 instead of the Rimseal.

 

Forklift Truck
Figure 1: Forklift Truck. Source: Seals-Shop

Zurcon® Rimseal

HIMOD® SLYDRING®

Zurcon® Scraper DA22

Figure 2: Rod Seal Zurcon® Rimseal, Wear Ring Himod® Slydring® and Zurcon® Scraper DA22. Source: Seals-Shop


Since it is not always possible to have replacement parts in stock and they may not be immediately available for delivery, Trelleborg’s Seals-Shop offers all the above-mentioned parts in a range of different diameters to suit your specific needs, and so minimizing downtime. All our replacement parts are ready for immediate shipping to help make maintenance and repair even easier and faster. For more information, visit Seals-Shop.com.

Please note, recommendations on application and system design are provided as suggestions only. It is the customer’s responsibility to ensure safe and adequate performance in their own application. Seals-Shop or its supply partners cannot accept liability for the form, fit, or function sold through the Seals-Shop or consequential damages thereafter.
 

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