Is the grease of the machine tool screw rod good or weak?
Thick point, not too thin, bearing high speed spin will be thrown out when the thin oil.
Screw rod bearings relatively high speed, should be diluted (low viscosity) of grease, with high viscosity grease will lead to increased friction, temperature rise, the result is easy to burn bearings.
With thick and thin does not matter, mainly with high speed high temperature grease.
