You need a high-viscosity grease with solid lubricants for that. SKF LGEV 2 contains molybdenum disulphide and graphite in an extremely high-viscosity base oil and is specifically intended for large trunnion bearings under high load at low speeds, where micro-slip occurs. LGEM 2 is the slightly more broadly applicable variant. For system use, we validate the choice in advance, because solid lubricants in a central system require technical consultation with SKF.