Insert ball bearing unit is consisted of a double sealed,
single row bearing and one of various types of housings (cast iron
or stamping steel housing).
Type:
1.Rational
self-alignment:
The outside
diameter of the self-contained bearing is spherical to match
corresponding spherical inside diameter of the housing providing
self-aligning between these two members, which compensates for
misalignments of the units resulted from errors in mounting and
distorting of the foundation.
2.Large load carrying
capacity
Being the same as ***0 and ***0 series single row deep groove
ball bearings in internal construction of the self-contained
bearings, Insert Ball Bearing Units can substain radial loads and
substain thrust loads as well. And they are low noise during
operating.
3.Longer service
life
Insert Ball Bearing Units are
often used in severe operating conditions where they are exposed to
dirts, moisture and high temperature, and in such applications, the
grease inside the set-contained bearing deteriorates in a short
time. It is required that relubricate the units at suitable
intervals so as to replace deteriorating grease with fresh grease.
Insert ball bearing units with cast iron housings are all
relubricable types equipped with grease fittings to secure full
performance and longer service lift of the units under any
operating conditions.
4.Efficent
sealing:
1, RS+SLINGER type
2, Tripe-lips type
3,RST type
5.Solid
housing:
The cast iron horsing is of
solid one-piece construction to provide maximum rigidity against
deformation at mounting and wear resistance to any operating
conditions.
6.Bearing can be locked
on the shaft easily:
There are three methods of
locking bearing to the shafts. Locking with two set-screws in the
extended inner ring is the most common method. Adopting sleeve
locking or an eccentric locking collar is also available. All these
locking methods and lock the bearing on the shaft easily.
7.Special
heat-treatment on bearing inner ring:
As shown in the figure 4, the
inner ring of the self-contained bearing is hardened in the
race-way and surroundings part where hardening is necessary, the
area of set screw hole of the inner ring has been templed by high
temperature after hardened,it has higher toughness and impact
clasticity. This special heat-treatment ensures full bearing
performance and prevents the set screws from loosening during
operation as the set screws can be tightened hard enough without
causing broken inner ring set screw hole.
8.Unique device to
prevent bearing’s outer ring rotation:
The bearing outer ring is
equipped with a unique locking-pin (or ball) which permits
automatic selfaligning of the bearing, and also prevent outer ring
from rotating. This can prolong bearing's service life.
9.Complete
interchangeability between bearing and housing:
Skilled precision workmanship
on the self-contained bearing and the housing provides complete
interchangeability between them and the bearing can be easily
replaced whenever required.
*0.Easy
installation:
The self-contained bearing is
prelubricated with an adequate quantity of high quality grease.
Bearing units can be mounted on the shaft immediately. The units
are, therefore, free from ingress of harmful contaminants into the
bearing chamber during mounting procedures.
The desiring installation
method of installing insert ball bearing unit is: first install the
housing at support base firmly, then tighten the bearing to the
shaft. The method which the bearing is tightened to the shaft is :
for set screws locking type bearing, tightening the two set screws
located at two places on one side of the wide inner ring to the
shaft. For eccentric locking collar type bearing, rotating the
eccentric locking collar to lock the shaft by hand in direction of
the rotation. Then tighten the set screw which located at the
eccentric locking collar.
Bearing units
structure:
The outer ring of the
selfcontained ball bearing in ground to a sphere, and the bore of
housing in machined to a matching radius, This permits
self-aligning between the two members. Following figure is a view
of a Pillow Black which is the most popular type of Insert Ball
Bearing Units with set screw locking. The bearing units have
various types of perfect sealing devices and can operate
satisfactorily under hard working conditions, especially for
machines operated in dustry or muddy surroundings.
Application:
Widely used in agricultural
machinery, construction machinery, textile machinery, food stuff
machinery and conveying devices, etc.
