Four Ball Lubricant Wear and Extreme Pressure Tester

Four ball tester that rotates a steel ball against three fixed balls in oil to measure wear scar and extreme pressure load. Used by lubricant blenders and engine oil and grease QC labs.

Specification

Engine oil, gear oil or grease is placed in the cup holding three balls while a fourth rotates under load at fixed speed. Scar diameters indicate anti-wear quality and weld load, helping blenders qualify additive packages for automotive and industrial service.

Features

• Heated test cup with PID temperature control
• Lever loading with dead weights up to 800 kgf
• Precision spindle at 1200 or 1800 rpm
• Friction torque measurement with load cell
• Automatic timer with shut off

Technical Specifications

Spindle speed	1200 +/- 60 and 1760 +/- 40 rpm
Load range	Up to 800 kgf
Test temperature	Ambient to 100 deg C
Ball size	12.7 mm, grade 25 steel
Timer	0 to 99 min
Friction torque	Digital, 0.1 N-m resolution
Standards	ASTM D4172, ASTM D2783, IP 239
Power	230 V AC, 50 Hz, 1.5 kW

Standard Accessories

• Ball cup and lock nut set
• Steel balls pack of 100
• Weight set