We manufacture self lubricated high performance RYDON PTFE Structural load bearings such as Slide bearings, Support bearings, Expansion plates, Skidway plates and other related products and services. Our bearings are designed to accommodate unidirectional and omni directional sliding movement in a single plane and to a limited angular misalignment caused by the thermal expansion, Seismic or differential forces encountered by high winds.

PTFE slide bearings are superior to conventional expansion plates, rollers and rocker arm type supports in many ways.

 

 

ADVANTAGES OF RYDON SLIDE BEARINGS

A. Low friction and no stick slip action
B. Less bulky than alternative assemblies
C. Minimize transmission of seismic forces
D. Easy to install, either pre-assemblies or onsite
E. All-weather capability indefinite life
F. No lubrication no maintanance
G. Vibrations are damped
H. Simplicity and flexibility of design
I. Self aligning
J. No fatigue failure
K. Abrasion resistant
L. Uniform load distribution

CHOICE OF BEARING MATERIALS

PTFE is used as a prime bearing materials for its exceptional all-round qualities.

 

 

 

 

 

 

 

We provide the following varieties in PTFE formulations to the choice of the design engineer.

I. PTFE 100% virgin (not reprocessed) - For bearing pressure upto 70 kg /cm
II. PTFE 100% virgin Dimpled - For bearing pressure upto 70 kg /cm
III. *TURCITE B (Bronze with spl additives) or RYDITE - For bearing pressure upto 140 kg /cm
IV. *FLUORINOID OR *FLUOROGOLD (glass with spl additives) or RYDOGOLD - For bearing pressure upto 140kg /cm
V. Alternate self lubricating materials to the choice of design requirements

TURCITE is trademark of TRELLEBORG SEALING SOLUTIONS AB -BUSAK + SHAMBAN
FLUORINOID is trademark of FLUOROCARBON CO LTD – UK
FLUOROGOLD is trademark of SAINTGOBAIN PERFORMANCE PLASTICS

 

THE SLIDE BEARINGS

RYDON SLIDE consists of a load carrying pad in sliding contact with a fixed pad. The load pad is attached to the upper (sole) plate which is the sliding part of the structure and the fixed pad to the lower baking plate or foundation member. These plates are available in set of PTFE / PTFE and SS/PTFE combinations for unguided or guided designs in case of EXPANSION PLATE BEARINGS / SUPPORT BEARINGS BS5400 Sec 9.1 procedures will be followed for the Design, Materials selection, Manufacturing, Testing and inspection of the Expansion plates.

SOLE PLATE
The upper plate is carbon steel of 3 mm thickness which retains either a PTFE bearing pad of 2.5mm thickness or 3mm stainless steel AISI 304 bright annealed finish flat and mirror polished to surface roughness Ra. 0.15. To ensure SS sheet Remaining flat on the plate full area bonding supplemented with fasteners are also provided. The sole plate should always be larger than the bottoms fixed plate and or can be supplied either square or rectangular to cater for co-ordinate direction movement. Alternate thickness is available in sole plate.

LOWER FIXED PLATE
2.5mm thick PTFE pad is either directly bonded to a 3 mm thickness lower backing plate or 6mm PTFE pad is recess boned to a 10 mm backing plate. Alternative thickness of steel material is available. Wherever possible some sources form of seal will be provided to prevent the PTFE from contaminations which will drastically reduce bearings life. Dimpled PTFE is used to retain additional lubrication.

SKIDWAY PLATES

We offer RYDON skidway plates to suit the customer requirements. A Typical skidway plate comprises of 2.5mm PTFE hot bonded to a 3mm carbon steel plate with a 22mm welding lip, For onsite tackwelding. All exposed metallic surfaces should be protected against corrosion. Skidway plates are used many construction yards throughout world to assist in skidding jackets, Desks, and Bridges. Heavy structure weighing several tons can be loaded over these plates.

 

TYPICAL APPLICATIONS

 

 

 

 

 

 

 

 

 

Expansion bearings have been successfully used to support buildings, Bridges, and heavy industrial equipments.

The followings are the typical applications of the slide bearings:
1. Pipeline constructions - Pipe supports
2. Steel and concrete buildings
3. Bridges and highway construction
4. Offshore drilling rigs
5. Transmission towers.
6. Industrial
         Pressure and storage vessels - Boilers
         Heat exchangers
         Dust collectors - Electro Static Precipitator
         Heavy machinery
         Petrochemical plants
         Wind tunnels
         Air heaters

RECOMMENDED DESIGNS

Tack welding
6.0mm PTFE pad contained in a recessed
backing plate, finished for tack welding, full welding or
bolting,Counterfaced by a larger, mirror finished stainless
steel plate
Load capacity : 140kg/cm
Temperature Range : -30 C to + 120 C

Full Weld bearing
2.5 mm PTFE top pad bonded to 12mm
backing plate for full welding to substrate . 2.5 mm PTFE
bottom pad bonded to 12mm backing plate for full
welding to substrate
Temperature Range : -30 C to + 120 C

Bolted Bearing
2.5 mm PTFE top pad bonded to 6mm
backing plate with countersunk holes for bolding
Load Capacity : 70 kg/cm
Temperature Range : -30 C to + 120 C

Elastomeric backed bearing
2.5 mm PTFE top pad bonded to 3mm
backing plate tack welding 2.5 mm PTFE top pad bonded
to 6mm elastomer to accommodate small angular
misalignments and 3mm mounting backing plate for
tack welding or bolting
Load Capacity : 70 kg/cm
Temperature Range : -30 C to + 120 C

Guided expansion bearings
The top and bottom plate thickness is selected as per the design load side stoppers are provided for guided movements The bearing pad is combination can be PTFE to PTFE or PTFE to SS
Load capacity : 70 kg/cm, 140 kg/cm
Temperature Range : -30 C to + 120 C

 

Recessed bearing
6.0mm PTFE pad contained in a recessed
backing plate, finished for tack welding, full welding or
bolting, Counter faced by a larger, mirror finished stainless
steel plate
Load capacity : 140kg/cm
Temperature Range : -30 C to + 120 C

Anti - Vibration Bearing
2.5 mm PTFE top pad bonded to 3mm
backing plate for tack welding . 2.5 mm PTFE
bottom pad bonded to 12.5mm anti - vibration pad.
held in place by mechanical friction
Load capacity : 70kg/cm
Temperature Range : -30 C to + 120 C

Thermal insulation Bearing
Used when the PTFE temperature could exceed + 180 C
2.5 mm PTFE top pad bonded to 3mm
backing plate 25mm thermal insulator and 3mm mounting
plate for tack welding or bolding. 2.5mm PTFE bottom pad
bonded to 3mm backing plate for welding or bolding
Load Capacity : 70 kg/cm
Temperature Range : -30 C to + 180 C

Counter faced bearing
2.5 mm PTFE top pad bonded to 3mm
backing plate for tack welding, full welding or bolting,
Counter faced by a larger, mirror finished stainless steel plate
Load Capacity : 70 kg/cm
Temperature Range : -30 C to + 120 C

Skidway plate
2.5mm Dimpled PTFE pad bonded to 3mm Carbon steel with 25mm welding lip and central welding holes.
Typical size :
Carbon steel 1200 x 2000
PTFE 500 x 1950 2 pads