KR-203B 3/4 POINT BENDING TESTING MACHINE

Product Overview

The KR‑203B double‑column servo‑driven flexural testing system is purpose‑built for bending, compression and annular static‑pressure performance assessment of mobile‑phone cover glass, tempered protective films and other optoelectronic panel components. It handles thin glass substrates ranging from 0.2 mm up to 3 mm, including tablet display panels, LCD modules, capacitive touch‑screen covers, sapphire optical elements, lens glass and smartphone rear‑cover materials.

Equipped with high‑precision US‑origin load‑cell, Panasonic AC servo drive and high‑accuracy ball‑screw transmission, this unit comes supplied with dedicated 3‑point / 4‑point interchangeable bending fixture sets. Supported by professional Windows test software, it automatically computes peak breaking force, flexural strength, modulus and other key mechanical metrics. The equipment complies with ASTM C393, C1161, D790 and other international flexural‑test standards, widely deployed within consumer‑electronics R&D labs, glass‑material manufacturers and third‑party optoelectronic‑product certification institutes.

Core Product Competitive Advantages

1. High‑Stiffness Double‑Column Rigid Frame Heavy‑duty welded vertical gantry minimizes frame deflection during brittle‑specimen fracture events. Adjustable leveling feet secure stable installation on lab floors. Multiple configurable test‑stroke options, and the effective test width can be widened upon request for oversized panel samples.
2. High‑Precision Measuring & Servo‑Drive System Imported high‑sensitivity force sensor delivers constant resolution of 1/200 000 full‑scale; Class 0.5 / Class 1 accuracy grades are selectable. Panasonic AC servo motor paired with precision ground ball‑screw ensures smooth, stable cross‑head velocity across the full 0.05‑500 mm/min speed range. High‑resolution photoelectric encoder captures displacement data with high fidelity.
3. Interchangeable Standard‑Compliant Bending Fixture Kit Modular fixture assembly supports quick switching between 3‑point and 4‑point bending configurations. Multiple support‑roller diameters and base‑span sizes are provided to match glass, ceramic, plastic and metallic specimens. Fixture geometry fully aligns with ASTM flexural‑test requirements, reducing system errors caused by improper sample support.
4. Powerful Multilingual Test‑Analysis Software Real‑time rendering of load‑deformation and stress‑strain curves. The program auto‑calculates characteristic mechanical indexes including maximum force, breaking‑load, flexural strength and elastic modulus. Operators can zoom, overlay and compare multiple groups of test graphs; editable reports can be exported to Excel or printed directly. Raw test datasets are saved locally for long‑term traceability review.
5. Multi‑Layer Hardware‑Software Safety Mechanism Electronic upper‑lower travel limit sensors prevent cross‑head mechanical collision. Automatic overload protection activates at 110 % of rated capacity to safeguard the high‑precision load‑cell. Physical emergency‑stop button on the front panel enables instant manual shutdown in unexpected operating conditions.

Complete Technical Parameter Table

Standard Complete Test Operating Workflow

1. Pre‑Test Inspection & Parameter Setup Power‑on main unit and supporting desktop computer; launch dedicated test software. Select corresponding 3‑point or 4‑point bending test template, input specimen thickness and dimension parameters, configure termination thresholds and report‑template settings.
2. Fixture Assembly & Specimen Mounting Install the matched bending‑test fixture, adjust support‑roller span according to applicable test‑standard. Place glass panel specimen flat onto supporting rollers, ensure centered placement to eliminate eccentric‑loading interference.
3. Zero‑Calibration Procedure Perform force‑value and displacement zero‑reset to eliminate initial mechanical offset before formal loading starts.
4. Automatic Bending‑Test Execution Trigger test‑start command. Servo‑driven cross‑head travels at preset velocity to apply downward bending load; system continuously captures force and displacement data while rendering real‑time test curves.
5. Post‑Test Data Analysis & Report Export Test automatically terminates upon specimen fracture or reaching preset stop criteria. Review key characteristic‑point data, analyze flexural‑strength results; export datasets to Excel or print formal inspection reports.
6. Equipment Shutdown Steps Cross‑head returns to home position; remove broken specimen fragments and clean fixture surfaces. Close software application and cut off main power supply.

 

Wide Industrial Application Scenarios

Consumer‑Electronics Glass Component Factories

Flexural‑strength and breaking‑load testing for mobile‑phone cover glass, tempered protective films, tablet‑PC display substrates and capacitive touch‑panel glass; incoming‑batch QC and new‑glass‑formula performance validation.

Optoelectronic‑Material R&D Workshops

Mechanical‑property evaluation for sapphire glass, optical lenses and precision ceramic sheets.

New‑Material & Composite‑Material Enterprises

Bending‑performance assessment for engineering plastics, thin metal sheets and ceramic‑matrix composite specimens.

University & Material‑Science Laboratories

Material‑mechanics teaching experiments; flexural‑characteristic research for brittle advanced‑material samples.

Third‑Party Accredited‑Testing‑Organizations

Carry‑out ASTM‑compliant bending‑strength evaluation and generate official inspection‑reports for product‑approval and factory‑acceptance audits.

Global Distributor & After‑Sales‑Support

We provide remote‑one‑on‑one software‑operation training plus fixture‑assembly and specimen‑mounting guidance. Spare‑parts inventory includes servo‑motors, load‑cells and custom‑made special‑purpose bending jigs. Bulk‑order customers may request custom‑stroke / custom‑width frames and overseas‑power‑conversion variants. Regional‑exclusive‑agent privileges contain priority‑production scheduling, OEM private‑branding services and complete‑set high‑definition product‑marketing‑image resources.

Product‑Banner‑Marketing‑Slogan

KR‑203B Computer‑Controlled 3‑Point & 4‑Point Flexural Tester | Specialized For Phone‑Glass‑Cover‑Panel Bending‑Strength Performance Evaluation

Core‑Feature‑Labels‑For‑Product‑Images

High‑Rigidity Double‑Column Frame | Panasonic Servo Drive | Interchangeable 3‑/4‑Point Bending Fixtures | 1/200000 High‑Force‑Resolution | ASTM‑Compliant | Real‑Time Curve Plotting | Overload & Travel Dual‑Safety‑Protection

Safety‑Operation‑Reminder

Wear protective goggles when conducting brittle‑glass fracture tests. Keep hands away from moving cross‑head travel zone during automatic running. Clean broken glass fragments from fixtures after each test cycle.