Hydraulic Pump Regulator for Caterpillar 320C / 320D Excavator

Hydraulic Pump Regulator for Caterpillar 320C / 320D Excavator

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 4 year year

Product details

Hydraulic Pump Regulator for Caterpillar 320C / 320D Excavator

Product Overview

This hydraulic pump regulator is a critical replacement spare part for Caterpillar 320C and 320D excavator main hydraulic pump. It precisely adjusts pump displacement and output flow, stabilizes the working status of the hydraulic system, and ensures sensitive action response of the whole Machine. Poor‑condition regulators will cause high fuel consumption, weak digging power, speed drop and abnormal noise of excavator main pump. This replacement unit matches original installation dimensions, suitable for overhaul and maintenance of construction machinery.

Technical Specifications

- Applicable Model: Caterpillar 320C, 320D Excavator

- Product Name: Hydraulic Pump Regulator

- Matching Component: Excavator main hydraulic pump

- Material: High‑strength alloy steel

- Working medium: Anti‑wear hydraulic oil

- Working pressure: Matches original pump standard

- Installation: Direct bolt‑on replacement, no extra modification required

- Feature: Load‑sensing pressure adjustment, flow proportional control

Working Principle

The hydraulic pump regulator receives pressure feedback signals from the hydraulic system. According to the actual load of the Machine, it drives the servo piston inside the main pump, changes the swing angle of hydraulic pump, and automatically adjusts displacement and oil output. It balances power distribution between engine and hydraulic pump, prevents engine stalling under heavy‑load operation, and optimizes excavator digging and traveling performance.

Core Advantages

1. Strict manufacturing tolerance, consistent mounting hole position, direct swap for old damaged regulator.

2. Stable pressure‑sensing performance, effectively reduce pump surge and hydraulic oil heating.

3. Wear‑resistant internal components, long service life under continuous heavy‑duty working conditions.

4. Effectively fix common faults: slow movement, insufficient digging force, high oil temperature, engine lug down.

5. Perfectly compatible with original hydraulic system, easy for field assembly and machine repair.

Application Scope

Mainly used for Caterpillar 320C, 320D crawler excavator. Widely applied in earth‑moving, quarrying, municipal engineering and other construction‑site Machine maintenance projects. It is an essential control component to restore normal performance of excavator main hydraulic pump.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 Audited supplier

4 year

Address: Ningbo, China

Main Product: hydraulic motor , gear box, hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

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