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ASTM Standard Spherical Rubber Bearing to France

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Basic Info

Model No.:  Diameter range 150mm-2200mm or Customized

Product Description

Model NO.: Diameter range 150mm-2200mm or Customized Material: Neoprene Size: Various Materials: Rubber with Steel Transport Package: in Pallets or Wooden Cases Origin: Hebei, China Usage: Infrastructure Construction Shape: Rectangle and Circular Certificate: ISO9000 Trademark: JianFeng Specification: As Drawing Requests HS Code: 5522233 Contact information
Sales Manager:       Miss Anna Lee
Mobile Phone:        +86-15132836877
Tel:                        86-318-5106277
Fax:                       86-0318-5106277  
Website:                www.prolianz.com
Company:             Hengshui Jianfeng Engineering Rubber co., LTD.  
 
 
ASTM Standard Spherical Rubber Bearing to France



Description of  Spherical Bearings
Spherical bearing is composed by top plate, base plate, convex middle plate and
two Teflon plates of different composition. Opposite the top plate, it is a
concave spherical in the base plate, and the PTFE plate between them. Beam
rotation through spherical surfaces and PTFE plate sliding; stainless steel plate
on the top plate and another PTFE plates on the intermediate steel plate
perform the second sliding surface, realized beam stretching displacement
produced by temperature factors.
Spherical bridge bearing transfers force reliably and rotation performance is
consistent. Spherical bridge bearing has great bearing capacity, large
displacement and large turning angles, so it is more suitable for wide bridge and 
curved bridge. No rubber is used in the Spherical bearing so it never happen
that brittle rubber caused by low temperature affecting the bearing rotation, and
Spherical bearing is especially suitable for cold areas.
 


Types of Spherical Bearings
Similar to pot bearing, spherical bridge bearings are available in fixed type,
guided type and free sliding types .
1. Fixed type bearing only allows for rotations, any longitudinal or transversal
movement is restrained.
2.Guided type has edge steel guide to accommodate unidirectional movements.
3.Free sliding type bearing can slid in all directions.




ASTM Standard Spherical Rubber Bearing to France
 


Features of Spherical Bearings
1.Allows for large displacement.
2.Accommodate larger rotations than pot bearing in excess of +/- 0.03 radians.
3.Unlimited movement capability in any directions.
4.Excellent self-alignment capability.
5.Minimum sliding friction coefficient.
6.Dimpled PTFE disc is fitted in 1/2 depth of the concave steel plate for higher 
load bearing capacity.
7.PTEF disc with cavities for containing lubricant to reduce sliding friction.
8.Complying with BS EN-1337, KS4424, AASHO, ISO or other custom
standards.
9. Easy installation.
10. Low cost maintenance.
 



Applications of Spherical Bearings
Ideal for structures with bearings of large turning angles.
Bridges with big torsions.
Bridges in low temperatures lower than -30° C.
Wide and curved bridges.
 


ASTM Standard Spherical Rubber Bearing to France


Installation details of Spherical Bearings
1. Spherical Bearings shall not be used on bridges where the concrete for the
beam, pier and platform is lower than 35° C, unless specially approved by the
designer.
2. Install Spherical Bearings: To adjust bearing level putting wedges under
bearing base plate, and to make sure (real factory) Spherical Bearing for Bridge 
base plate above the pier and platform top 20 ~ 50mm.Center the Spherical
bearing to the right place. Filling in bolt holes and bearing bottom cushion with
epoxy mortar.
3. The 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 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.

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