The Four Ball Wear Test Machine is used to determine the relative wear-preventing properties of lubricating fluids and greases in sliding and rolling applications.
Three ? inch diameter steel balls are clamped together and covered with the test lubricant. A fourth ? inch diameter steel ball is pressed into the cavity formed by the three clamped balls for three point contact, and rotated for a set duration. Lubricants are compared using the average size of the scar diameters worn on the three lower clamped balls.
The Standard Falex Four Ball Wear Test Machine is supplied with a 1/2 HP motor to drive the rotating ball at 1200 rpm. A mechanical lever arm applies loads up to 50 kilograms on the ball specimen. A digital temperature system controls the initial temperature set point (ambient to 200° C) and displays the lubricant temperature during the test. A digital timer system controls the test duration (1 second to 999 hours).
The Falex Four-Ball Variable Drive Wear Test Machine is supplied with a 1 HP variable speed motor with a standard operating range of 60 to 3600 rpm. Optional systems are available for rotational speeds up to 10,000 rpm. A pneumatic load system applies loads up to 180 kilograms on the ball specimen. A digital friction measurement system displays the test friction force (0 to 1000 grams). A digital temperature system controls the initial temperature set point (ambient to 200° C) and displays the lubricant temperature during the test. A digital timer system controls the test duration (1 second to 999 hours). An optional system is available for controlling the atmosphere in the test cup.
The Four-Ball Wear Test Machine is designed to provide the precision loading required for performing accurate wear tests. It is the only test machine that has proven through cooperative inter-laboratory testing to meet the requirements of the precision as stated in the ASTM Standard Test Methods D2266 and D4172. Insist on the Falex FourBall Wear Test Machine to meet your ASTM testing requirements.
FOUR-BALL WEAR SPECIFICATIONS：
LOAD:
Variable Drive Four Ball Wear Tester: Pneumatic loading, 180 kg max.
Standard Four Ball Wear Tester: Dead weight and mechanical lever, 50 kg max.
SPEED:
Variable Drive Four Ball Wear Tester: 60 to 3600 rpm continuously variable. 1 to
10,000 rpm with speed conversion options.
Standard Four Ball Wear Tester: 1200 rpm
TEMPERATURE CONTROL:
Digital control from ambient to 200°C
Auto start-up upon reaching test temperature
TEST DURATION:
Digital Programmable Timer (1 second to 999 hours)
FRICTION MEASUREMENT:
Variable Drive Four Ball Wear Tester: Load Cell Assembly and Digital Display of
Test Friction Force
Standard Four Ball Wear Tester: Not Available
ENVIRONMENTS:
Dry or lubricated (fluids, greases, dry film)
SPACE REQUIREMENTS:
66 in (H) x 36 in (D) x 32 in (W) (168 cm x 91 cm x 81 cm)
UTILITY REQUIREMENTS:
220V, 60Cycles (50 Cycle optional), Single Phase, 10 Amps
80 psig clean dry air (Model F-1519)
SHIPPING INFORMATION:
750 lb. (341 kg); 43 in x 36 in x 75 in (109 cm x 91 cm x 191 cm)
