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Job Application
Compliance Standards
ASTM D1264, D4950; IP 215; FTM 791-3252
Application
This test method covers the evaluation of the resistance of a lubricating grease to washout by water from a bearing, when tested at 38 and 79°C (100 and 175°F) under the prescribed laboratory conditions.
Summary of test method
The grease is packed into a ball bearing, the bearing is then inserted in a housing with specified clearances, and rotated at 600 ± 30 rpm. Water, controlled at the specified test temperature, impinges on the bearing housing at a rate of 5 ± 0.5 mL/s. The amount of grease washed out in 60 ± 1 min is a measure of the resistance of the grease to water washout.
Details of apparatus
The complete apparatus consists of following parts and accessories.
(1) Ball Bearing, ASTM test bearing size 6204 (see ADJD3336).
(2) Bearing Housing and Shield with dimensions as shown in Fig. 1. 5.3
(3) Reservoir, Bearing-Housing Mount, Circulating Pump, and Drive Motor.
(4) Heating Source, to maintain the water temperature at 79 ± 1.7°C (175 ± 3°F).
|
Temperature Range |
Ambient to +80 °C |
|
Temperature Resolution |
0.1 °C |
|
Temperature Accuracy |
± 0.5 °C |
|
Temperature sensor |
PT-100 Temperature probe |
|
Temperature controller |
Microprocessor based AUTO-TUNE PID Controller |
|
Wet heater watts |
600 Watts |
|
Bearing rotational speed |
600 ± 30 RPM |
|
Tank capacity |
5-10 Liters (Depends on bath design) |
|
Timer |
0-99 minutes |
|
Operating Voltage |
230 Volts, 50 Hz, Single Phase, AC Supply |
