High Quality NSK pillow block bearing UC206 UCP206 P206
|Cr||20700 N||Basic dynamic load rating, radial|
|C0r||11300 N||Basic static load rating, radial|
|Cur||590 N||Fatigue limit load, radial|
Pillow blocks are usually referred to the housings which have a
bearing fitted into them and thus the user need not purchase the
bearings separately. Pillow blocks are usually mounted in cleaner
environments and generally are meant for lesser loads of general
The fundamental application of both types is the same which is to
mount bearings safely enabling their outer ring to be stationary
while allowing rotation of the inner ring. The housing is bolted to
a foundation through the holes in the base. Bearing housings are
either split type or unsplit type. Split type housings are usually
two piece housings where the cap and base can be detached, while
certain series are one single piece housings. Various seals are
provided to prevent dust and other contaminants from entering the
housing. Thus the housing provides a clean environment for the
expensive bearings to freely rotate, hence increasing their
performance and duty cycle.
Bearing housings are usually made of grey cast iron. However
various grades of metals can be used to manufacture the same.
ISO 113 specifies internationally accepted dimensions for plummer
Different types of bearing housings
1)Pillow blocks – these include UCP, HCP, UCLP, UKP, UCPX, and
These mounted bearings are used when support for a rotating shaft
axis is required. Their design enables them to support the shaft in
operations where the mounting surface is parallel to the shaft
2)Flange type– includes UCF, HCF, UKF, UCFX, UKFX, UCFU, UCFC,
UKFC, UCFS, UCFL, UKFL, UCFT.
The flange type bearing housing comes in various shapes and styles
such as square, round, and rhombus flange types.
3)Take-up units type - UCT, HCT, and UKT.
These bearing housings have an inner surface which is concave
sphered hence the bearing used has a convex sphered outer surface.
They are designed to permit moderate initial misplacement. Widely
used in conveyor chains and conveyor belts. A sliding slot at the
side of the housing facilitates the free movement of the unit.
4)Cartridge type – UCC, HCC, and UKC.
This type of bearing housing has a cylindrical outer perimeter
hence the bearing outer bore is spherical. The entire unit allows
free movement in the axial direction and is self-aligning. This
type can be used as free side bearings for long shafts because they
are capable of accommodating shaft expansion or contraction due to
temperature differences. Also suitable where there is adjustment of
the axial direction is required.
5)Light duty types SAFD, SBFD, SAFW, SBFW, SALF, and SBLF.
Pillow block application:
Pillow block used for agricultural machinery , transportation
systems or construction machinery , textile machinery , ceramics