Double Acting Hydraulic Cylinder 320D 323D Excavator Bucket Cylinder 350bar Cylinder

Excavator Hydraulic Cylinder Introduction

The CAT 320D/323D bucket cylinder is a core actuator in the working device of medium-duty excavators, and is a typical double-acting hydraulic cylinder. Mounted between the stick and bucket linkage, it drives the piston rod to move in both directions via hydraulic oil, precisely controlling the bucket's curl and dump movements. Utilizing a high-strength steel cylinder barrel and hard chrome-plated piston rod, coupled with proprietary sealing system, it boasts excellent impact resistance, wear resistance, and sealing performance. This compact cylinder, with its high pressure capacity, directly determines the digging force and working accuracy, making it a key component ensuring efficient and stable excavator operation.

Excavator hydraulic cylinders are our specialty. We can supply hydraulic cylinders for various brands of excavators without affecting the normal operation of the machinery. If customers have additional requirements, we have professional technicians who can modify the cylinders according to their needs and propose suitable solutions.

Excavator Hydraulic Cylinder Parameters

Excavator Hydraulic Cylinder Model

FAQ

Q: Are the 320D/323D bucket cylinders double-acting or single-acting?

A: They are double-acting hydraulic cylinders. Oil can enter both the rod-side and rodless sides. The piston rod can actively extend and retract, precisely controlling the bucket's inward and outward tilting.

Q: What are the common faults? How to handle them?

A: External oil leakage: Mostly due to aging seals or scratched piston rods → Replace the seal kit and inspect the rod surface.

Internal leakage (weak bucket, automatic sinking): Damaged piston seals or scored cylinder → Disassemble and repair or replace the entire assembly.

Bent piston rod: Excessive lateral force or excessive pin clearance → Replace the pin bushing promptly to avoid strained operation.

Q: How to extend the service life of bucket cylinders?

A: Keep hydraulic oil clean; regularly inspect and replace the pin bushings; avoid prolonged pressure buildup at extreme positions; clean the piston rod and apply grease promptly after operation; reduce lateral digging.

Our company

Hebei Runhe Hydraulic Machinery Co., Ltd. is a leading manufacturer specializing in hydraulic system solutions. We are also one of the most recognized suppliers of large OEM equipment manufacturers in Excavator hydraulic cylinders. With more than 12 years of industry experience.

Our products include hydraulic cylinder, hydraulic pump, hydraulic motor, widely used in automation equipment, agricultural machinery, lifting machinery, engineering vehicles, printing machinery, intelligent storage system, port ships and many other industries.In addition to the standard series of hydraulic cylinders, we can also provide customized production services according to customer drawings. Our non-standard customization capabilities meet the special needs of customers, such as special port forms, special materials, special installation, special performance, stacked hydraulic valves, etc. 

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