Hydraulic bearing pushers optimise plant maintenance tasks

When servicing large machinery, the importance of correct bearing installation is paramount. According to bearing manufacturers, incorrect installation is directly the cause of 16 percent of all failures.

The use of hydraulic bearing pushers provides a precise, safe and time-saving method of removing and replacing bearings in plants widespread in the mining and energy, materials handling and ports facilities, oil and gas and manufacturing and primary processing sectors.

Technofast’s new EziTite bearing pushers – in stock sizes from M60 to M400 and with capacities from 230kN to 1800kN – offer an ideal means of mounting or dismounting rolling element bearings and other components which are widely employed in machinery such as conveyor drives, crushers, ball mills, milling and rolling equipment, gearboxes, turbines, drilling equipment, and pumps, fans, blowers and marine applications.

Rather than relying on heat or oil injection processes, the EziTite Bearing Pusher uses high-pressure hydraulic oil (typically at 700 bar) to precisely drive the bearing onto the shaft’s bearing seat.

Use of the EziTite Bearing Pusher is simple, with the assembly screwed into place and energised with a suitable pressure pump. The internal pressure acts upon an annular piston to press against the bearing’s inner race, driving the bearing onto the shaft.

Once the bearing has been driven into place, the pressure is released and the Bearing Pusher is then removed. A standard locking nut and washer are then used to prevent the bearing from moving from its seat during operation and maintain correct operating preload.