Page 669 - SKF-bearing-housings

Standard bearing unit design

Housing material
The housings used in SKF ConCentra roller
bearing units are made of grey cast iron.
Paint, corrosion protection
The housings are painted black (RAL 9005)
using a water based alkyd/acryl paint. The
paint protects the housing in accordance with
ISO 12944-2, corrosivity category C2 (i.e.
exterior atmospheres with low level of pollu-
tion, interior atmospheres where condensa-
tion may occur). The paint is not affected by
most lubricating or engine oils, cutting fluids
or alkalescent washing chemicals. 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
Boundary dimensions of SKF ConCentra roller
bearing units in the SYNT series are in accord-
ance with ISO 113. Boundary dimensions for
bearing units in the FYNT series are not stand-
ardized either nationally or internationally.
Interchangeability
SKF ConCentra roller bearing units in the
SYNT series are dimensionally interchange-
able with SNL plummer (pillow) block housings
in the 5(00) series († Split plummer block
housings SNL 2, 3, 5 and 6 series, starting on
page 55).
Bearing units in the FYNT series are dimen-
sionally interchangeable with FNL flanged
housings († Flanged housings FNL series,
starting on page 531).

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