• Grease Mobility Apparatus

Grease Mobility Apparatus

Determines the resistance of lubricating grease to flow under prescribed conditions. Mobility is measured in grams per second by pumping the sample through a standardized SOD pressure viscometer at controlled temperature and pressure.

  • U.S. Steel Method; ASTM Draft Method
  • Test temperatures as low as –30°F (–34.4°C)

Performs grease mobility tests at low temperatures to predict pumpability characteristics. Determines the suitability of greases for applications in centralized or bulk systems where pumps, valves or pipes are used to distribute or transfer grease. Consists of pressure viscometer, cooling bath and refrigeration system. The stainless steel pressure viscometer is fitted with a modified No.1, 40:1 ratio capillary. After the sample is loaded in the pressure viscometer, the assembly is installed in the cooling bath and allowed to reach the test temperature. Mechanically refrigerated cooling bath can attain test temperatures as low as –30°F (–34.4°C) with stability of ±2°F (±1°C). With the sample at the test temperature, the flow of grease is started under the selected pressure on a nitrogen tank regulator. Flow per second is determined by collecting the grease for a specified period. Includes sample collector turntable.

  • Grease Cylinder (pressure viscometer) with modified No.1, 40:1 capillary
  • Sample Collector Turntable

Conforms to the specifications of: 

U.S. Steel Method; ASTM Draft Method

Minimum Temperature: –30°F (–34.4°C)

Control Stability: ±2°F (±1°C)

115V 60Hz, Single Phase, 6A
220-240V 50 or 60Hz, Single Phase, 3A


Cooling Chamber: 12x12x30 (30.5x30.5x76)
Refrigeration Unit: 15x12x12 (38x30x30)

Net Weight: 114 lbs (51.7 kg)

Shipping Weight: 300 lbs (136.1 kg)

Dimensions: 36x27x46 in. (91.4x68.6x116.8 cm)

  • K22680-0-22 Grease Cylinder with plunger and fittings
  • K22680-0-16 Capillary
  • 250-100-001 Thermometer dial type - Range: –100 to +100°F with 2°F subdivisions