Rollon PTFE Slide Bearings

Introduction

Pipe supports are used to eliminate damage at the pipe crossings caused due to lateral or linear movement of pipes and are ideal for use between pipe & pipe supporting structures or at pipe crossings. They also find usage as structural supports / expansion plates for boilers, pressure vessels, air pre-heaters, electro static precipitators etc. These sliding bearing supports permit unrestricted movement at free end, owing to the changes in temperature or during loading / unloading or due to seismic effect. If the supports are rigid, stress will be developed at the supports & causing major damages to the structure.

Pipe / structural supports are generally designed to meet the requirements of BS 5400 standard section 9.1. Rollon bearings design & manufacture the pipe supports / structural supports with ROLLON SLIDEWAY material as the interface material. ROLLON SLIDEWAY is a composite material consisting of PTFE & sintered bronze along with special wear resistant additives. It is a self-lubricating, wear resistant material suitable for temperatures up to 260° c and not effected by weather & most chemicals.

We can also supply the sliding supports with interface material in virgin PTFE, graphite or any filled PTFE to suit the customers specification.

Typical Bearing Design

The pipe / structural supports consist of lower plate & upper plate. The lower plate shall be of ROLLON SLIDEWAY material suitably bonded on to the carbon steel plate, the upper plate shall be made of 1.5MM thick stainless steel (SS 304) tack welded to the backing carbon steel plates. The assembly is so designed that upper plate is larger than the lower plate by an amount in excess of the expected movement, so keeping the contact area constant throughout the cycle of motion.

The bearings are designed to accommodate the lateral & longitudinal movements anticipated in the structure. We can also design the bearings to accommodate any rotational movements or bearings with capacity to self align during erection. Such bearings can be designed up to maximum vertical load of 250mt & horizontal load of 50mt.

We can also manufacture bearings with elastomeric backing, this will accommodate small angular misalignments.

Features & Benifits

  • ROLLON SLIDEWAY has the lowest coefficient of friction, less than 0.03µ
  • Load bearing capacity of ROLLON SLIDEWAY is higher than any other polymers used for such applications.
  • It compensates for surface irregularities & reduces transmission of impact shock.
  • Chemicals & weather has no effect on ROLLON SLIDEWAY. Moisture absorption is less than 0.01% even under icing condition or immersion.
  • Vibration is damped & allows even distribution of loads.
  • ROLLON SLIDEWAY is abrasion resistant & tend to embed foreign particles without any apparent affect on function or life.
  • There is no stick-slip action
  • The slide bearing can accommodate some misalignment in construction.
  • Bearings are simple in construction & can be installed at site.

Manufacturing & Testing Facilities

SKIVING

: Billets are skived to the required thickness in the state of the art, CNC SKIVING MACHINE which ensures uniform & consistent thickness with very close tolerances.

ETCHING PLANT

: In order to achieve perfect bonding of the skived material , the interface materials is chemically etched on one surface of the material. The chemical etching on one surface ensures perfect bonding. Rollon provides the Industry's highest quality etched surface for superior bonding characteristics.

TENSILE STRENGTH

: We also have in our inspection lab, tensile testing machine enabling us to conduct necessary test for every skived sheet. These tests are conducted as per ASTM D1457

MACHINING

: Rollon has various other machining facilities like centreless grinder, vertical surface grinder, universal cylindrical grinder, lathes, drilling machines, etc,. Enabling us to have control over the entire manufacturing.

TESTING

: Rollon has the in-house facility to conduct the load, both vertical & horizontal & friction test on the structural supports manufactured. The test rigs are calibrated regularly.

Applications

  • PIPE SLIDING SUPPORTS
  • HEAT EXCHANGERS
  • PRESSURE VESSELS
  • HRSG DUCTINGS
  • HP / LP DRUMS
  • ELECTROSTATIC PRECIPITATORS
  • OFF SHORE PLATFORMS
  • REFORMER PLANTS
  • DAMPERS
  • AIR PRE-HEATERS
  • ARCHITECTURAL APPLICATIONS

Slective Experiences

CUSTOMER
CONSULTANT
PROJECT
APPLICATION
ISPAT INDUSTRIES LTD, MUMBAI
HUMPREY & GLASGOW, MUMBAI
SPONZE IRON PLANT, RAIGAD
SUPPORTS FOR REFORMER PLANT
PUNJ LLOYD LTD,NEW DELHI
ENGINEERS INDIALTD, NEW DELHI
OIL&NATURAL GAS CORPORATION,
HAZIRA
PIPE SADDLES
ESSAR OIL LTD, MUMBAI
JOHN BROWN
OIL & NATURAL GAS CORPORATION
OFFSHORE PLATFORM
LARSEN & TOUBRO LTD, MUMBAI
L&T - SARGENT & LUNDY, BARODA
RELIANCE INDUSTRIES JAMNAGAR
SUPPORTS FOR FIRED HEATERS
LARSEN & TOUBRO LTD, MUMBAI
L&T - SARGENT & LUNDY, BARODA
HALDIA PETROCHEMICALS
HRSG DUCTING
PHILS ENGINEERING CORPN., MUMBAI
TOYO ENGINEERING
CHAMBAL FERTILISERS & CHEMICALS LTD., GADEPAN
SUPPORTS FOR PRESSURE VESSELS
RELIANCE PETROLEUM LTD.,JAMNAGAR
BECHTEL, FRANCE
SELF
PIPE SUPPORTS
TOYO ENGINEERING CORPORATION, JAPAN
TOYO ENGINEERING
CHAMBAL FERT & CHEM LTD., GADEPAN
PIPE SUPPORTS
TECNIMONT SPA, MILANO
TECNIMONT
SAFCO, AL-JUBAIL
HEAT EXCHANGER SUPPORTS
TECNIMONT ICB LTD, MUMBAI
TECNIMONT SPA
HALDIA PETROCHEMICALS
HEAT EXCHANGER SUPPORTS
MUKAND LIMITED, THANE
ENGINEERS INDIA LTD
NUMLIGARH REFINERY
DUCTING SUPPORTS
G. B. ENGINEERINGS ENTERPRISES, TRICHY
ANSALDO
NEYVELI POWER PROJECT
STRUCTURAL SUPPORTS
MITSUI BABCOCK ENERGY (I), CALCUTTA
DESEIN
GODAVARI SUGARS
ELECTROSTATIC PRECIPITATORS
ANSALDO SERVICES PVT LTD., CHENNAI
IDEA
NEYVELI THERMAL POWER STATION
STRUCTURAL SUPPORTS
LARSEN & TOUBRO LTDMUMBAI
DEVELOPMENT CONSULTANTS LTD, CALCUTTA
AES - KELANTISSIA SRI LANKA
HRSG DUCTING SUPPORTS
OCTAMEC ENGINEERING LTD., MUMBAI
CENTRAL PUBLIC WORKS DEPARTMENT
INDIAN TRADE PROMOTION ORG., BANGALORE
ROOF FRAME SUPPORTS
LARSEN & TOUBRO LTD., MUMBAI
PROJECTS & DEVELOPMENTS INDIA LTD
HFCL - NAMRUP
BOILER SUPPORTS
CHENG CHEN MACHINERY CO. LTD, TAIWAN
MITSUI BABCOCK
CAPCO 2C 90 TPH, TAIWAN
BOILER SUPPORTS