THK KRF - Introduction of the Grease

9.
Appendix
9-3
KRF
9. Appendix
9-6
Introduction of the grease
THK original grease
AFF Grease
Using high-class synthetic oil and lithium-based consistency enhancer and additive, this grease
has a stable rolling resistance that has not been achieved with conventional vacuum grease or low
particle-generative grease.

Characteristics
· Excels in conformability at low speed operation with a small uctuation in rolling resistance due
to a low viscose resistance.
· Optimal for use in a clean room due to excellently low particle-generative characteristics.
· Allows the greasing interval to be extended due to excellent wear resistance in micro vibrations.

Representative properties
Test items Representative property values
Consistency enhancer Lithium-based grease
Base oil High-class synthetic oil
Base oil kinetic viscosity: mm
2
/s (40°C) 100
Worked penetration (25°C, 60 W) 315
Mixing stability (100,000 W) 345
Dropping point: °C 220
Evaporation: mass% (99°C, 22 h) 0.7
Oil separation rate: mass% (100°C, 24 h) 2.6
Copper plate corrosion (B method, 100°C, 24 h) Accepted
Low temperature torque: mN·m
(-20°C)
Startup 220
Rotation 60
4-ball test (fusion load): N 1236
Service temperature range (°C) -40 to 120
Appearance color Reddish brown
Fig. 7 Appearance of the grease tube and the product box