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Housing designs

SKF take-up housings for Y-bearings are available as standard in different designs and two materials. The standard assortment includes housings made of:
Cast iron take-up housings

Cast iron take-up housings are used in Y-unit series listed in table 1.

Cast iron take-up housings, available in the TU .. M and TUJ series, enable Y-bearing units to be relubricated through a grease fitting. This makes them especially suitable for bearing arrangements that operate under any of the following conditions:

  • high levels of contamination
  • high speeds
  • high temperatures
  • relatively heavy loads
Composite take-up housings for SKF Food Line

Composite take-up housings for SKF Food Line are used in Y-unit series listed in table 2. The units incorporate stainless steel Y-bearings or Y-bearings with zinc-coated rings, either filled with a food-grade grease.

Composite take-up housings for SKF Food Line are made of a leightweight thermoplastic composite material and do not have any relubrication feature as standard. They are designed for Y-bearing take-up units that need to resist a wide range of chemicals and other treatments used during washdown processes of food and beverage applications (table 3).

End covers

To protect the bearing arrangement at the end of a shaft, and to avoid the possibility of an accident caused by an exposed shaft end, depending on their design take-up housings are able to accommodate one of the following end cover designs:

  • TU .. M series
    → ECY end cover (fig. 3)
  • TUWK .. L series
    → ECL end cover (fig. 4)

End covers are accessories and must be ordered separately. The designations together with the distance A5 that the end cover protrudes from the housing (fig. 5, fig. 6) are listed in the product tables (→ Take-up housings for Y-bearings, Y-bearing take-up units).

The complete assortment of end covers for Y-bearing housings and units is listed in the product table.

End covers are made of polypropylene (PP), have good resistance to most chemicals and can withstand operating temperatures up to 100 °C (210 °F). They are mounted by snapping them into the recess of the housing.

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