Page 118 - Y-bearing-units

Y-bearing plummer block units

Y-bearing plummer block Fig. 7
units with a pressed steel
housing
Y-bearing plummer block units († fig. 7) with
a pressed steel housing are designed for simple
applications with limited loads and speeds. The
two-part housing, which has no provision for
relubrication, is ordered separately from the
insert bearing. The individual items that make
up a Y-bearing unit are:
• the two-part housing
• the Y-bearing
• the rubber seating ring, if needed

The advantage of ordering individual compon-
ents is that a large number of combinations are Fig. 8
possible.
Rubber seating rings made of acrylonitrile-
butadiene rubber in the RIS 2 series († fig. 8)
are available for these Y-bearing plummer
blocks and are meant to reduce running noise
and dampen vibration. The rubber seating rings
also enable the bearings to be displaced slightly
in their housings, for example, to accommodate
shaft elongation.
Y-bearing units with a rubber seating ring are
also listed in the product tables. Detailed infor-
mation about rubber seating rings can be found
in the section Design of Y-bearing arrangements
on pages 45 and 46.

Data – general
• Housings in the SYJ series are in accordance
Dimensions with JIS B 1559-1995.
The boundary dimensions of most Y-bearing • Housings in the P series are in accordance
plummer block housings are in accordance with with ISO 3228:1993, except the centre height
the following standards: H 1 , which deviates slightly.
• Housings in the SY 5(00) M series are in
accordance with ISO 3228:1993. Y-bearing plummer block housings in the SYF,
• Housings in the SY 5(00) U series are in SYFJ and SYM series have not been standardized
accordance with ISO 3228:1993, except the either nationally or internationally, but are com-
centre height H 1 , which deviates for several mon in the marketplace.
housing sizes.
• Housings in the SYH series are in accordance
with ISO 3228:1993, except the centre height
H 1 , which is lower than the standard.

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