Page 359 - SKF-bearing-housings

Standard housing design

Caps and bases individually marked Fig. 5
The housing cap and base are matched during
manufacture and are not interchangeable with
the caps and bases of other housings. To pre-
vent any mismatches, a unique serial number
is marked on both the housing cap and the
base († fig. 5).

Housing material
SONL plummer block housings are made of
grey cast iron.
Paint, corrosion protection
SONL plummer block housings are painted
black (RAL 9005) using a water based alkyd/
acryl paint. The paint protects the housing in 7
accordance with ISO 12944-2, corrosivity cat-
egory C2 (i.e. exterior atmospheres with low
level of pollution, interior atmospheres where
condensation may occur). The paint is not
affected by most lubricating or engine oils,
cutting fluids or alkalescent washing chemi-
cals. Housings can be repainted with most
water or solvent based 1- or 2-component
paints.
Unpainted surfaces are protected by a
solventless rust inhibitor.

Dimension standards
The dimensions of SONL plummer block hous-
ings are not standardized either nationally or
internationally.

Interchangeability
SONL plummer block housings are dimension-
ally interchangeable with the earlier SOFN
housings in the 2(00) and 5(00) series.
3(00) and 6(00) series SOFN housings are still
available. For additional information, contact
the SKF application engineering service.

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