Rock
Aggregate
Cement
Concrete
Soil
Steel
Bitumen/Asphalt
Security Survey Equipment
General Items
Automatic Four Ball Wear Tester AZA1331
The AZA1331 Automatic Four Ball Wear Tester from AZA LAB is an advanced and fully automated instrument designed to evaluate the Wear Preventive (WP) and Extreme Pressure (EP) characteristics of lubricating oils and greases under steel-on-steel sliding conditions.
Conforming to ASTM D2783, ASTM D2266, and ASTM D4172, this tester determines key tribological parameters such as maximum non-seizure load (PB), welding (sintering) load (PD), and composite wear value (ZMZ). It also measures the friction coefficient and performs long-duration wear resistance tests, providing comprehensive data on lubricant performance under controlled pressure, speed, and temperature conditions.
The AZA1331 features a servo-controlled hydraulic load system, computerized control and data acquisition, and real-time test monitoring, making it ideal for research, quality control, and industrial lubricant evaluation.
Description
Principle of Operation
The instrument operates on the four-ball method, where three stationary steel balls are clamped together and immersed in the test lubricant, while a fourth rotating ball is pressed against them under a precisely controlled load.
As the upper ball rotates, friction and wear occur at the point of contact, and parameters such as friction torque, wear scar diameter, and test temperature are recorded.
The data is analyzed to determine:
- PB (Maximum No-Seizure Load) – The highest load at which the lubricant prevents seizure.
- PD (Welding or Sintering Load) – The load at which the balls weld together.
- ZMZ (Wear Value) – A composite measure of wear resistance.
 Equipment Composition
The AZA1331 Automatic Four Ball Wear Tester includes:
• Main frame with integrated servo motor drive and hydraulic loading system
• 1.5 kW servo motor (0–3000 rpm) with digital control for precision operation
• Industrial-grade embedded computer with data acquisition and visualization software
• Hydraulic closed-loop servo load control for accurate force application
• Temperature-controlled oil chamber with adjustable heating up to 1000°C
• Friction torque sensor, force transducer, and thermocouple assembly
• Measurement and control electronics integrated in a compact electrical cabinet
• Touch-screen interface for real-time control and monitoring
• Software-controlled data storage, graphing, and reporting functions
Key Features & Advantages
- Conforms to ASTM D2783 / D2266 / D4172 for WP and EP lubricant evaluation
• Evaluates friction, wear, and lubrication behavior under variable load and speed
• Servo-controlled hydraulic system ensures precise load application (±1%)
• Stepless variable speed control (1–3000 rpm) with accuracy ±1 rpm
• Temperature control up to 1000°C for both ambient and high-temperature tests
• Real-time display of friction coefficient, torque, temperature, and load
• Graphical data visualization (friction–time, temperature–time, speed–time, etc.)
• Supports tests in air, oil, water, mud, or abrasive mediums
• Up to 10 types of friction pairs supported for different test scenarios
• Automatic stop based on preset time, revolutions, torque, or temperature
• Data storage, recall, and printing functions for convenient report generation
• Free software updates and calibration support
 Working Conditions
| Parameter | Condition |
| Ambient Temperature | 10 – 35°C |
| Relative Humidity | ≤ 80% |
| Installation | On a level, vibration-free surface |
| Environment | No corrosive gas or strong electromagnetic interference |
| Power Supply | AC 220V ±10%, 50Hz |
Technical Specifications
| Parameter | Specification |
| Model | AZA1331 |
| Test Force Range (Stepless Adjustable) | 50N – 10,000N ±1% |
| Maximum Friction Force | 1000N ±2% |
| Torque Measuring Range | 0 – 15 Nm (automatic display and record) |
| Spindle Speed | 1 – 3000 rpm ±1 rpm |
| Speed Control | Servo-controlled, stepless |
| Temperature Range | Ambient – 1000°C ±2°C |
| Test Mediums | Air, Oil, Water, Mud, Grinding Material, etc. |
| Time Range | 1s – 9999 min |
| Stop Method | Manual / Automatic (by Time, Torque, Revolutions, etc.) |
| Oil Chamber Stroke | > 45 mm |
| Main Spindle Power | 3 kW |
| Data Control System | Industrial computer with real-time curve plotting |
| Dimensions (L × W × H) | 1200 × 870 × 1700 mm |
| Net Weight | 850 kg |
Applications
The AZA1331 Automatic Four Ball Wear Tester is widely used in:
• Evaluation of lubricating oils and greases for WP and EP characteristics
• Material tribology research on metals, ceramics, plastics, and powder metallurgy
• Determination of wear resistance and frictional properties under variable conditions
• Development and quality assurance testing in oil, automotive, and aerospace industries
• Educational and research institutions focusing on tribology and materials science
 Benefits
- Fully automatic operation with minimal human intervention
• High accuracy and repeatability for both WP and EP evaluations
• Modular design with easy maintenance and calibration
• Advanced data acquisition and curve plotting software
• Supports multi-condition testing (variable load, speed, and environment)
• Ensures reliable lubricant performance analysis for R&D and quality control
 Supply and Service Details
| Parameter | Details |
| Supply Capacity | 30 Sets per Month |
| Warranty | 12 Months |
| After-Sales Support | Installation, Calibration, and Operator Training |
| Software Support | Lifetime Free Updates |
| Packaging | Export-Grade Wooden Crate with Shock Protection |
The AZA1331 Automatic Four Ball Wear Tester from AZA LAB is a next-generation, computer-controlled tribology instrument engineered for precision testing of lubricants, greases, and materials. Combining servo-hydraulic control, high-speed data acquisition, and comprehensive software visualization, it provides unmatched reliability and analytical depth for determining friction, wear, and load-carrying properties.
Built for both industrial and research laboratories, the AZA1331 stands as a benchmark instrument in lubrication analysis and tribological material evaluation.
Related products
Advanced Triaxial Test System (UU–CU–CD Capable) (AZA 1296)
- UU–CU–CD test modes for complete soil strength profiling
- Automated control of pressure, load, and drainage
- Compatible with clay, silt, sand, and mixed soils
- Integrated data acquisition and real-time graphing
- Meets ASTM D2850, D4767, BS1377, AASHTO standards
- Ideal for geotechnical, research, and academic use
Cleveland Open-Cup Flash Point Tester AZA1292
The Cleveland Open Cup Flash Point Tester AZA1292 from AZA Lab is a reliable and precision-engineered laboratory instrument designed for determining the flash point and fire point of petroleum products in strict accordance with ASTM D92 and GB/T 3536-2008 standards. Engineered for accuracy, safety, and operational simplicity, the AZA1292 is an ideal solution for petroleum laboratories, refineries, inspection agencies, and quality control departments.
The instrument is suitable for testing petroleum products with flash points in the range of 79°C to 400°C, excluding fuel oils, and delivers consistent, repeatable, and standards-compliant results.
Flash Point D93 Abel Closed Cup Tester AZA1278
The AZA1278 Flash Point D93 Abel Closed Cup Tester from AZA Lab is a high-precision laboratory instrument designed for accurate determination of the closed cup flash point of petroleum products. It complies fully with ASTM D93 (Pensky-Martens Closed Cup) test methods, ensuring reliable, repeatable, and safety-critical measurements.
This instrument is widely used in petroleum laboratories, refineries, fuel testing centers, and quality control facilities to evaluate the flammability characteristics of fuels, lubricants, oils, and other petroleum fractions
Sediment Extraction Tester AZA1313
The AZA1313 Sediment Extraction Tester from AZA Lab is a precision laboratory instrument engineered for the accurate determination of sediment content in crude oils and fuel oils using the extraction method specified in ASTM D473. Designed for reliability, consistency, and long-term laboratory use, this tester is an essential tool for petroleum refineries, inspection laboratories, and fuel quality control facilities.
Sediment content is a critical quality parameter that directly impacts storage stability, processing efficiency, pipeline integrity, and combustion performance of petroleum products. The AZA1313 ensures precise sediment measurement by extracting insoluble material using toluene, delivering dependable results across sediment concentrations ranging from 0.01% to 0.40% by mass, with capability for higher concentrations when required.
SEMI AUTOMATED CLEVELAND OPEN CUPFLASH POINT ANALYZER AZA1289
The AZA1289 Semi-Automated Cleveland Open Cup Flash Point Analyzer from AZA Lab is engineered for accurate, repeatable determination of flash and fire points of petroleum products, lubricants, and other combustible liquids. Designed in full compliance with ASTM D92 and ISO 2592, this analyzer provides an optimal balance between automation, operator control, and cost efficiency.
The Cleveland Open Cup (COC) method is the globally accepted reference method for determining flash and fire points of materials with flash points above 79°C, making AZA1289 ideal for routine quality control, safety assessment, and regulatory testing in laboratory environments.
Semi‑automated atmospheric distillation analyzer AZA1285
The AZA1285 is equipped with a low-voltage, manually adjustable heater combined with PID-controlled condenser and receiver sections, ensuring stable distillation rates and accurate thermal management throughout the test cycle. The system incorporates a closed-loop, CFC-free refrigeration unit, providing efficient condensation without reliance on external cooling water or environmentally harmful refrigerants.
A built-in inert gas purge system enhances operational safety by allowing controlled nitrogen or inert gas injection, reducing oxidation risks and ensuring compliance with laboratory safety protocols.
Semi‑Manual Distillation Analyzer AZA1286
The Semi-Manual Distillation Analyzer (AZA1286) from AZA Lab is engineered to deliver accurate, repeatable, and ASTM D86-compliant atmospheric distillation testing for petroleum products. Designed to combine the robustness of manual operation with the precision of digital instrumentation, the AZA1286 is an ideal solution for educational institutions, QA/QC laboratories, and small- to mid-scale production facilities requiring reliable routine fuel analysis without the complexity of full automation.
This analyzer provides operators with direct control over heating, condensation, and receiver handling, while benefiting from digital temperature measurement, timing functions, and safety monitoring. The result is a cost-effective, dependable system that maintains compliance with international testing requirements.
XRF Sulfur Content Tester AZA1300
The AZA Lab Sulfur Content Analyzer – AZA1300 is a state-of-the-art instrument designed for precise and rapid determination of sulfur content in petroleum, petrochemical, and coal chemical products. Based on the energy-dispersive X-ray fluorescence (EDXRF) principle, it integrates advanced electrical, mechanical, and microprocessor technologies to deliver high accuracy, reliability, and ease of operation.
Engineered to comply with ASTM D4294, GB/T 17040, SH/T0742, and GB/T11140 standards, the Model 1300 provides dependable measurement results with excellent repeatability and reproducibility. Its intelligent design ensures automatic corrections for environmental conditions such as temperature, pressure, and C/H ratio, making it a versatile solution for laboratories and production facilities alike.
Compact, user-friendly, and equipped with advanced safety features, the AZA1300 is an ideal tool for routine quality control, process monitoring, and research applications where sulfur determination is critical.
