KR-738 Servo Controlled Hose Impulse Fatigue Test Bench

Category 2. Plastic Testing Machine

Additional information

Product Details：

Product Overview

The KR-738 servo pulse fatigue test bench is professional hydraulic test equipment developed to replicate cyclic fluctuating pressure loads on fluid transmission hoses and pipe assemblies. It accelerates long-term service fatigue testing within lab environments, capturing critical failure indicators like tube rupture, joint leakage and layer separation to evaluate service lifespan of rubber hoses, metal tubing and pipeline fittings.

Adopting industrial touch HMI + servo proportional hydraulic control architecture, the unit precisely adjusts peak pressure, pulse frequency and waveform shape. Full-cycle automatic monitoring and fault interlock protection support unattended long-duration testing, fully matching ISO 6803, GB/T 5568 and automotive hose industry testing specifications. It is widely deployed in auto parts manufacturers, hydraulic hose factories, engineering machinery component labs and third-party fluid product certification institutes.

Core Product Highlights

High-Precision Servo Proportional Pressure Regulation
Servo-driven pulse pump system delivers adjustable test pressure ranging from 0–32MPa with 0.01MPa display resolution and ±2% control accuracy. Square, trapezoidal and customized pressure waveforms are supported; users freely tune pulse width and pressure rise/fall slopes to match diverse product testing standards. Standard pulse frequency maintains 60±5 cycles per minute with 200ml single discharge volume for stable cyclic loading.

2.Integrated Industrial PC Data Acquisition System

7-inch full-color touchscreen synchronously displays real-time pressure-time curves, cumulative pulse counts and running status. The system automatically stores all test logs, curve data and abnormality records; complete editable test reports can be exported via USB storage or directly printed after testing finishes. Built-in power-off memory function prevents data loss during unexpected power cuts.

3.Multi-Layer Full-Range Safety Interlock Protection

Safety door lock interlock: The machine cannot initiate testing when the observation cabinet door is open; thick anti-splash safety glass shields the test zone.

Multi-condition alarm & auto-stop: Triggers audible/visual alerts and halts operation upon overpressure, overtemperature, medium low liquid level or specimen leakage. Custom leakage threshold can be preset for automatic shutdown once fluid seepage exceeds limits.
Emergency stop button mounted on control panel for instant cut-off of hydraulic output under dangerous conditions.

4.Modular Split Hydraulic & Cabinet Layout

Independent pulse generation power unit, closed test chamber and centralized control cabinet adopt integrated welded frame with mobile casters for flexible workshop layout. All high-pressure fluid pipelines utilize standardized threaded fittings without welding seams, simplifying disassembly, maintenance and component replacement. Built-in medium recovery pipeline automatically collects leaked fluid to avoid ground contamination.

5.Single-Station Independent Test Chamber Design

Standard single test cavity structure allows installation of one hose assembly per cycle; multi-station expanded versions are available upon customized demand. Sealed circulation medium tank with liquid level sensor prevents dry pump operation; matched heat exchange module supports adjustable medium temperature according to customized test requirements.

6.Low-Maintenance Long Service Hydraulic Components

Core pressure sensors, proportional valves and pulse pumps adopt internationally recognized branded parts with stable long-cycle performance. Centralized lubrication design reduces daily maintenance frequency; all electrical circuits feature overload and short-circuit protection to extend equipment service life.

Applicable Test Products & Industrial Fields

Automotive Fluid Hoses

Brake pipelines, power steering hoses, radiator cooling tubes, turbocharger oil pipes, air-conditioner rubber hoses; verify fatigue resistance under cyclic pressure fluctuations for vehicle fluid systems.

Industrial Hydraulic Assemblies

High-pressure rubber hydraulic hoses, metal braided tubing, pipeline connectors, engineering machinery oil delivery pipes; raw material batch inspection and new formula durability verification.

Household & Equipment Tubing

Water heater connecting pipes, washing machine hoses, air compressor pipeline assemblies; finished product pressure cycle aging certification.

R&D & Third-Party Testing Labs

Hose manufacturing enterprise quality control departments, automotive component R&D centers, CNAS accredited fluid product testing institutions; standardized fatigue life compliance testing.

Complete Technical Specification Table

Parameter Item	KR-738 Standard Configuration
Test Medium	Clean water (custom oil circulation system optional)
Pulse Pressure Range	0 ~ 32MPa, adjustable waveform amplitude 10%–100%
Standard Pulse Frequency	60 ± 5 cycles/min
Single Pulse Discharge Volume	200ml
Supported Waveforms	Standard square wave, trapezoidal wave, custom edited waveforms
Pressure Display Resolution	0.01MPa
Pressure Control Precision	≤ ±2%
Test Medium Temperature	Ambient temperature (heating/cooling module optional)
Maximum Preset Cycle Count	0 ~ 99,999,999 cycles
Test Station Capacity	1 station (multi-station customizable)
Data Export Method	USB flash disk storage + built-in print module
Power Supply	Single-phase AC220V 50Hz
Complete Machine Structure	Control cabinet + independent sealed test chamber

Standard Full Test Operating Procedure

Specimen Mounting & Pipeline Connection
Secure the tested hose assembly inside the sealed observation chamber, tightly connect both ends to high-pressure fluid pipelines and lock all threaded joints to eliminate air leakage.
Medium Filling & Air Purging
Fill the circulation tank with test medium, activate low-pressure exhaust mode to fully drain residual air inside the hose and internal pipelines until continuous liquid flows without bubbles.
Test Parameter Programming
On the touchscreen, set target peak pressure, pulse frequency, total test cycles and leakage alarm threshold; save customized test recipes for repeated batch testing.
Automatic Pulse Fatigue Cycle
Close the safety cabinet door and start the program. The servo pulse pump generates periodic fluctuating pressure; the system continuously records real-time pressure curves and cumulative cycle numbers in the background.
Automatic Abnormality Handling
If hose rupture, joint leakage or overpressure occurs during operation, the machine immediately stops pulsing, records fault timestamp and triggers sound-light warning prompts.
Data Export & Post-Test Maintenance
After reaching preset cycles or manual shutdown, export complete test curves and digital reports. Release residual internal pressure, drain test medium from the specimen and wipe the test cavity for the next batch.

Standard Factory Delivery Kit

KR-738 servo pulse fatigue test bench main unit (control cabinet + sealed test chamber)
Complete servo pulse pump and proportional pressure regulating hydraulic assembly
7-inch industrial touch HMI with built-in data storage & print module
High-precision pressure sensor set and full-cycle data acquisition system
Standard high-pressure connecting fittings and medium recovery pipeline assembly
Multi-language operation manual aligned with ISO & GB hose test standards
Factory inspection certificate and complete hydraulic electrical schematic drawings

Global After-Sales & Distributor Support

We provide full remote equipment operation training and pulse test parameter debugging guidance, with long-term stable supply of spare pulse pumps, pressure sensors and control touch screens. Custom multi-station chambers, heating/cooling medium circulation systems and overseas 60Hz voltage conversion versions are available for bulk purchase orders. Exclusive regional agent policies include priority production scheduling, OEM private brand customization and full sets of high-resolution English marketing image materials.

English Overlay Text For All Product Pictures

Main Banner Title: KR-738 Servo Controlled Hose Impulse Fatigue Test Bench

Control Panel Labels: PRESSURE SET / PULSE CYCLES / WAVEFORM EDIT / START / EMERGENCY STOP

Feature Overlay Tags: 0-32MPa Adjustable Pressure / Servo Proportional Control / Full Safety Interlock / Real-Time Curve Recording / Unattended Auto Operation

Safety Warning Label: Keep Cabinet Door Closed During Pulse Testing

Build Your Market with DGKAREY

KAREY products are trusted by customers across more than 100 countries, supporting long-term business growth in the testing equipment industry.
We are now seeking reliable partners to represent our brand in their local markets.

As an authorized distributor, you will receive dedicated regional support, ensuring a stable and protected business environment.
Your orders will be handled with priority, and our team will assist you with tailored equipment solutions based on your market needs.

From initial cooperation to ongoing development, we work closely with you to strengthen your presence and competitiveness.

KR-738 Servo Controlled Hose Impulse Fatigue Test Bench

KR-738 Servo Controlled Hose Impulse Fatigue Test Bench

Additional information

Product Details：

Product Overview

Core Product Highlights