Different style rubber products rubber supplier for metallurgical

Curved bearings for bridges are available in three standard configurations.

Installation details of Fixed Spherical Bearings:
1. Fixed Spherical Bearings shall not be used on bridges where the concrete for the beam, pier and platform is
lower than C35, unless specially approved by the designer.
2. Install Fixed Spherical Bearings: To adjust bearing level putting wedges under bearing base plate, and to
make sure (real factory) QZ Spherical Bearing for Bridge base plate above the pier and platform top
20 ~ 50mm.Center the QZ Spherical bridge bearing to the right place. Filling in bolt holes and bearing bottom cushion withepoxy mortar.
3. The Fixed Spherical Bearings shall connect with the beam, pier and platform with the embedded bolts. If
necessary, welding to the embedded steel plate is allowed, but cautions shall be taken to bearing and
concrete being damaged by the high heat from the steel bearing being welded.
4. When installation, the level of the Fixed Spherical Bearings shall accord with the design, and the supporting
face shall be horizontal and smooth. The difference in height of the four corners of bearing shall not exceed 2mm.

Conservation of Fixed Spherical Bearings:
Regular inspection and maintenance shall be carried out to the Fixed Spherical Bearings after it is put into
use, usually once a year, whichinclude:
A. Inspect whether the anchor bolt of QZ Spherical bridge bearing is broken, and whether there is any
cracking or aging in the sealing rubber.
B. Check the QZ Spherical bridge bearing relative displacement whether uniform, record bearing displacement
one by one.
C. Remove the garbage or dust around the QZ Spherical bridge bearing and carefully clean the surface of the
stainless steel with cotton waste.
D. Loosen the anchor bolt nut once, clean and oil it to prevent rusting, and then fix it again.
E. Check at a regular point the variation in the QZ Spherical bridge bearing height to see the abrasion of the
PTFE plate inside the bearing.If the variation is greater than 3mm, remove the rubber sealing ring to
examine the condition of the PTFE plate.
F. Paint regularly the parts of the QZ Spherical bridge bearing against rusting except the sliding surface of stainless steel.

Fig.4: Pin Bearing for Bridges