Significant for the design and specification of greases for low temperature service, the low temperature torque test measures the extent to which a grease sample retards rotation of a bearing assembly at the test temperature.
Features and Benefits:
- Digital torque indication for two samples
- Choice of test rig combinations
- Mechanically refrigerated, with standard -65°F (-54°C) operating range
- Optional cooling range to -100°F (-73°C)
- Optional strip chart recorder or data acquisition software
- Conforms to ASTM D4693 and D4950 specifications
- Data acquisition software available
Refrigerated two unit apparatus for ASTM low temperature torque tests on lubricating greases. Includes an insulated, thermostatically controlled air chamber with test rigs, drive shafts and externally mounted gear motors. Rotates drive shafts at 1rpm while electronic load cell-strain gauge indicators measure the torque required to restrain the test rigs. Digital LED displays indicate torque for each drive unit and cold chamber temperature. On ASTM D4693 models, spindle temperature is also indicated for each drive unit. An optional factory installed strip chart recorder provides a hard copy record of starting torque, running torque and maximum torque. Includes drive shaft overtorque protection_when drive shaft torque exceeds a preset value, the drive motors automatically shut down to prevent breakage of shaft insulators. Standard cooling range of -65°F (-54°C) meets ASTM requirements for D1478 and D4693 test methods. Optional -100°F (-73°C) range is available for special testing requirements.
ASTM D1478 Model for Ball Bearing Greases - Equipped with two test cages and two 6204 ball bearings per ASTM D1478 specifications.
ASTM D4693 Model for Automotive Wheel Bearing Greases - Equipped with two spring loaded spindle-bearings-hub assemblies, bearing packer assembly and bearing installation and removal tools.
Combined ASTM D1478-D4693 Model - Equipped with one test cage and one 6204 ball bearing for ASTM D1478 testing and one spindle-bearings-hub assembly with bearing packer and tools for ASTM D4693 testing.
Catalog # Test Method Electrical Requirements Cooling Range
K18860 ASTM D4693 220-240V / 60Hz -65°F (-54°C)
K18850 220-240V / 50Hz -65°F (-54°C)
K18861 220-240V / 60Hz -103°F (-75°C)
K18851 220-240V / 50Hz -103°F (-75°C)
Data acquisition software - Data acquisition software facilitates running both ASTM D1478 and D4693 tests. Graph of torque versus time details starting torque, running torque and time elapsed. Includes software, data acquisition board and cable.
Conforms to: ASTM D4693
Standard: -65°F (-54°C) K18860 / K18850
Optional: -103°F (-75°C) K18861 / K18851
Temperature Uniformity: ±0.1°F (±0.5°C)
Refrigeration: air cooled mechanical cascade hermetic system
Cabinet: floor-mount, polished stainless steel exterior, rides on swivel casters
The following link provides additional information from the instruction manual or original manufacturer's brochure. Right-click to open the PDF in a new window or download it: Koehler K18860 Low Temperature Torque Tester