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GuideDiode Trading EST · 6 min read
31 October, 2026 | 
AdminShort answer: A PTFE sliding bearing lets a bridge or structure move horizontally with very little friction, using a PTFE layer sliding on polished stainless steel. It is used where movement is larger than a rubber bearing can absorb. In Saudi Arabia, buyers choose between plain PTFE sheets, dimpled lubricated PTFE and complete bearing assemblies depending on the load and movement.
Long bridges, viaducts and large structures expand and contract with temperature. If that movement is blocked, stresses build up in the girders and piers. Sliding bearings release the movement in a controlled way.
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PTFE has one of the lowest friction coefficients of any solid material. In a ptfe sliding bearing ksa projects use, a PTFE sheet is recessed or bonded into a steel plate and slides against a stainless steel plate bonded to the opposite part. Friction is low, typically a few percent of the vertical load, and falls further as contact pressure rises, though it depends on the design and the lubricant used. Always take actual friction values from the bearing designer or the PTFE manufacturer’s data.
The most common use of ptfe sliding bearings for bridges ksa is on long-span bridges where thermal movement is large. They are paired with other elements:
| Component | Typical material | Role |
|---|---|---|
| Sliding layer | Virgin PTFE, often with dimples holding silicone grease | Gives very low friction |
| Mating surface | Polished stainless steel sheet | Smooth, corrosion-resistant counterface |
| Backing plate | Structural steel | Carries load into the girder or pier |
| Lubricant | Silicone grease in dimples | Lowers friction and wear over time |
Virgin PTFE is soft and creeps under high pressure, so designers limit contact pressure and sometimes use confined or filled PTFE. The stainless steel must stay clean and smooth, because scratches and dust raise friction and wear the PTFE.
When you choose a ptfe bearing distributor ksa, ask these questions:
At Diode Trading EST we supply PTFE sheet and related bridge bearing materials from stock in Dammam. For complete engineered bearings, share the design loads and movements and we will tell you what we can supply from stock and what needs a specialist manufacturer.
The friction of a PTFE slider is not one fixed number. It falls as contact pressure goes up and rises at low temperatures and at very low speeds, and it depends on whether the PTFE is dimpled and lubricated. Designers allow for this by using conservative friction values to size the piers and guides. Wear is controlled by keeping the stainless steel smooth, using grease in the dimples, and keeping dust and sand out. In a desert environment, a dust seal or cover around the slider is a sensible detail and worth discussing with the bearing designer.
PTFE for sliding surfaces is normally supplied as virgin sheet in standard thicknesses, which can be cut to size, recessed into steel or bonded to a plate. We stock PTFE sheet and rod for industrial use in Dammam. Confirm that the sheet quality, thickness and flatness suit the bearing drawing before ordering, and ask us for the material datasheet.
PTFE sliders are not needed for every bridge. Short spans with small movements are often well served by plain or laminated elastomeric bearings, which are cheaper and have no sliding surface to maintain. Sliders earn their place where the movement is large, or where the rubber alone would be overstrained. If you are unsure which route your project needs, your bridge designer will decide, and we can supply the PTFE sheet or rubber bearing material that the drawing calls for.
For related materials, we also stock laminated and plain rubber bearing pads, so a project that needs both sliding and elastomeric bearings can be sourced together.
Rubber moves by shearing, which has limits. PTFE sliding allows much larger movements with low resistance, so it suits long spans.
PTFE tolerates a wide temperature range, well above Gulf ambient levels, but creep under load matters more than heat for bearing design.
Sheet and cut pieces are available. Send your dimensions and thickness and we will quote.
Diode Trading EST keeps PTFE sheet and bridge bearing materials in stock and ships from our Dammam warehouse across Saudi Arabia and the GCC. Send your drawings, sizes or application details through our request a quote page, message us on WhatsApp at +966 56 838 3649, or email sales@diode.sa.
Diode Trading EST is a ptfe sliding bridge bearings supplier Saudi Arabia buyers can contact from Al Khobar. We supply from stock as a trader and do not manufacture the products.
Yes. Customers asking for ptfe sliding bearings Riyadh projects need can send us dimensions, load and movement requirements on WhatsApp +966 56 838 3649, and we will confirm the stocked options and delivery.
Share the bearing size, the expected movement direction, the support surface and the quantity. This helps us check availability quickly and avoids ordering the wrong sliding surface.
Everything we list is kept in stock, so confirm the current quantity with our team before you plan your installation schedule.
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Read moreDiode Trading EST supplies these PTFE (Teflon) Products from stock in Dammam, with delivery across Saudi Arabia and the GCC.
Stock in Dammam · MTC with every order
Need a price or lead time? Talk to our sales team.