To ensure effective sealing, plummer blocks are available with a variety of special sealing options and end covers. Benefits include a facility for easy mounting and dismounting of pre-assembled shafts.
Plummer block housings can beused with high-capacity spherical roller bearings or self-aligning ball bearings. They are manufactured from high-strength cast iron as standard but are also available in cast steel or spheroidal graphite cast iron. The housings have a re-lubrication facility and can be used with either oil or grease re-lubricationion.
Split plummer block design allows for easy mounting and dismounting of pre-assembled shafts.
Sealing options — NSK offers a range of sealing options including oil seals, labyrinth seals, or heavy-duty taconite seals.
Multi-relubrication points are provided to ensure relubrication of the bearing depending on orientation
Housing are supplied with spacer rings in order to provide axial location. Those can be omitted for "free end" axial front.
Ball Bearing Units
The NSK bearing unit is a combination of a radial ball bearing, seal, and a housing of high-grade cast iron or pressed steel, which comes in various shapes. The outer surface of the bearing and the internal surface of the housing are spherical, so that the unit is self-aligning. The inside construction of the ball bearing for the unit is such that steel balls and retainers of the same type as in series 62 and 63 of the deep groove ball bearing are used. A duplex seal consisting of a combination of an oil-proof synthetic rubber seal and a slinger is provided on both sides.