NEW PLUMMER BLOCKS OFFER SIMPLIFIED INSTALLATION & HIGH LEVELS OF PROTECTION IN DEMANDING OPERATING ENVIRONMENTS
11 June 2012
NSK’s new SNN and SD series of plummer blocks combine the traditional time saving and easy mounting benefits of integrated bearing units with the highest levels of sealing and mechanical protection for use in demanding industrial environments, such as quarrying and mining, cement, water treatment steel and materials handling.
Designed for easy fitment on conveyors, crushers feeders and general handling equipment, NSK’s new plummer blocks provide the continuous reliable operation demanded in quarrying and mineral extraction applications offering a robust construction that includes high rigidity cast iron housings – including webs for heat transfer, high capacity double row self aligning ball bearings or spherical roller bearings, five types of seal for the most demanding operating conditions, and a square base that facilitates alignment and also integrates supports to minimise deformation caused by possible over tightening of mounting bolts.
The SNN 500 (light) series and SNN600 (medium series) comprise a number of housing types, which, when combined the comprehensive seal options available and ball or spherical roller bearings, provide a solution for most plummer block applications with shaft diameters from 20mm to 140mm. The SD series are for heavier duty applications. They are combined with large spherical roller bearings for use on shaft sizes from 150mm to 380mm.
Both the SNN and SD series plummer blocks offer users the flexibility of either oil or grease lubrication. Each housing is equipped with two threaded holes for a grease nipple location on the cap, one drain hole in the base as standard and location dimples if positioning pins, extra mounting bolt holes, or condition monitoring equipment if required within the bearing application.
For operation in adverse environments, a range of sealing options is offered for the SNN housings. These range from the G type double lip Polyurethane to the C type Mild steel + wool and rayon seals, for shaft speeds up to 5m/s and temperatures up to 100 degrees C; to the V Type and Taconite seals which can operate up to 7m/s. The V seal also accommodates the highest level of misalignment, at 1 to 1.50 .
The Taconite seal offers the highest levels of protection against the ingress of moisture and dust. This seal arrangement combine cast iron + NBR rubber offering a high working temperatures of +120 degrees C. The labyrinth and Taconite seal options are also offered on the larger SD series of plummer blocks, which are equipped with spherical roller bearings.
FREE PLUMMER BLOCK PUBLICATION
NSK has produced a new publication covering the SNN and SD series of plummer blocks. Free copies of the publication, entitled: “Plummer Blocks and Accessories” are available from NSK: Freephone 0500 2327464. Callers should quote the publication reference: PLU/A/E/02.12 and also the title of the publication.
For further information, please contact Mary Fletcher:
NSK UK Ltd, Northern Road, Newark, Nottinghamshire, NG24 2JF Tel: 0500 2327464 Fax: 01636 643075 Web: www.nskeurope.com Email: email@example.com