Page 254 - Y-bearing-units

SKF Food Line Y-bearing units

To meet the requirements of the food, beverage The sealing arrangement, proven to be highly
and pharmaceutical processing industries, SKF effective during washdowns, consists of a stain-
has developed a special range of Y-bearing units. less steel supported, grease filled, multi-lip FDA
The housings for SKF Food Line Y-bearing approved synthetic rubber contacting and laby-
units are made of three different materials: rinth seal with a stainless steel flinger. († fig. 1).
The SKF Food Line Y-bearing units are
• Composite with dedicated rugged design pre-lubricated for life with a non-toxic food-
• Cast stainless steel for heavy-duty grade grease, based on a PAO oil and an
applications aluminium-complex soap as a thickener (food
• Zinc-coated cast iron for a cost-effective solution industry approved NSF H1).

The units are equipped with Y-bearings made of
stainless steel (YAR 2-2RF/HV series) or of high Designs
quality, carbon chromium steel with zinc coated
inner and outer rings (YAR 2-2RF/VE495 series). SKF Food Line Y-bearing units with
The bearing inner rings are extended on both composite housings
sides and are locked on the shaft with grub screws.
Strong, lightweight, chemical resistant
Fig. 1 Capable of resisting citric acids, cooking fats and
most food and beverage processing chemicals,
composite SKF Food Line Y-bearing housings
are made from a thermoplastic material that is
lighter than cast iron housings. The housing’s
spherical bore accommodates the insert bear-
ing’s spherical outer surface, enabling the unit
to compensate for initial misalignment.
Other performance advantages include:
• High fracture strength – dedicated rugged
design contributes to its fracture strength.
Radial breaking load is far greater than the
static load rating of the bearing. SKF Food
Line Y-bearing units are estimated to have the
highest fracture strength of any composite
unit on the market.
• Flush mounting – A polyamide filled housing
Fig. 2 base or a solid base allow the units to seat
flush with the mounting surface. This surface-
to-surface mounting eliminates gaps where
contaminants could potentially collect.
• Stability – Stainless steel bolt-hole inserts
provide added strength and stability to each
housing foot.

Housing designs
SKF Food Line Y-bearing unit composite housings
are available in the following designs († fig. 2):
• plummer block
• two- and four-bolt flange (oval or square shape)
• tapped base
• three-bolt bracket flange
• take-up

252