bearing assemblies for downhole tools include a compensator member operatively associated with a slidable member and a bearing member . the slidable member is movable longitudinally relative to the bearing member . such movement of slidable member occurs when a force acts upwardly on the downhole tool . thus , the slidable member facilitates absorption of the upward force acting on the downhole tool . during movement of the slidable member , the compensator member is moved from its expanded position to one of its plurality of compressed positions . as a result , the compensator member becomes biased or further biased toward the expanded position . after the upward force dissipates , the compensator member releases some of its stored energy to move from a compressed position toward the expanded position . longitudinal movement of the slidable member facilitates maintaining engagement of the downhole tool in its working position so that interruptions of operations are minimized .