Toshiba THL Series Instruction Manual page 62

5) Directly apply the grease to the exposed shaft area by brash.
Apply the grease to such an extent that the shaft groove can be filled.
Ball screw spline shaft
Apply the grease to this area.
Fig. 2.40 Greasing lower side of ball screw spline unit (THL300, THL400)
6) Push up the shaft up to the upper limit while pressing the axis 3 brake release
switch.
7) Directly apply the grease by brash to the shaft area sticking up from the cover.
Apply the grease to such an extent that the shaft groove can be filled. For the
portions (two positions) to be coated with grease, see Figure 2.39.
Table 2.8 Recommended grease (THL300, THL400)
Recommended grease
AFF grease
Maker
THK
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MAINTENANCE MANUAL
Axis 3 brake release switch
STE 85357