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Home / Product / SF-1 Oilless Bearing / SF-TEX Woven Fiber Self-lubricating Bushing, Fabric Wrapped Plain Bearing
Wholesale SF-TEX Woven Fiber Self-lubricating Bushing, Fabric Wrapped Plain Bearing
SF-TEX Woven Fiber Self-lubricating Bushing, Fabric Wrapped Plain Bearing
  • SF-TEX Woven Fiber Self-lubricating Bushing, Fabric Wrapped Plain Bearing

SF-TEX Woven Fiber Self-lubricating Bushing, Fabric Wrapped Plain Bearing

Product Description:

Steel with PTFE fbre fabric.This new material uses the PTFE fibers fabric overlay on metal backings, the fabric has a very high load capacity and much longer operating life compared with conventional 3-layer bushes. the metal can be carbon steel(SF-TEX), stainless steel(SF-TEX3), bronze(SF-TEXB) etc. Suitable for rotary and oscillating movement, lower maintenance requirements due to the long re-lubrication intervals, lower wear, lower susceptibility to edge loading, no absorption of water and therefore no swelling, good damping behaviors, and good resistance to shock loads. much longer service life under lower speed with high load.

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SF-TEX

SF-TEX Woven Fiber Self-lubricating Bushing, PTFE Aramid Fabric Lined Plain Bearing for Heavy Load & High Temperature Swing Joints

Woven PTFE aramid lining Heavy load swing joints High temperature duty Drawing based supply
200 N/mm² dynamic
170 °C continuous
0.05-0.15 Friction range
Product Overview

The SF-TEX bushing is a self-lubricating plain bearing with a woven PTFE and aramid fabric lining bonded to a metallic backing, developed for swing joints that combine high static load with elevated temperature and low sliding velocity. Where conventional PTFE film linings thin out under high contact pressure, the woven fabric structure distributes the load across interlocking fiber bundles and retains a lubricant reservoir within the weave. The aramid component raises the compressive strength and thermal resistance of the lining, so the bearing sustains dynamic loads up to 200 N/mm² and continuous operating temperatures up to 170°C. The fabric lining is appropriate for oscillating and swing motion in which the bearing does not complete a full revolution. Bushings are produced to drawing for inner diameter, outer diameter, wall thickness, length, chamfer, and lubrication provisions, with lining adhesion and dimensional records supplied per batch.

W1 PTFE Fiber Component Provides low friction and dry running capability. Fibers exposed at the sliding face transfer to the mating surface and form a transfer film.
W2 Aramid Fiber Component Raises compressive strength and thermal resistance. Carries contact pressure that would otherwise thin a plain PTFE film lining.
W3 Interlocking Weave Structure Distributes load across fiber bundles rather than a continuous film. Retains lubricant within the weave during oscillating motion.
W4 Metallic Backing and Bond Metallic shell provides structural rigidity and press fit stability. Fabric is bonded to the backing with a controlled adhesive layer.
Core Advantages
Woven fabric structure maintains the lining under high contact pressure Aramid content raises compressive strength and thermal resistance Dry running capability removes grease from swing joint assemblies Suitable for oscillating motion where full revolution does not occur Stable friction across the swing motion angle range Batch adhesion records support assembly quality control
Product Characteristics
Lining: woven PTFE and aramid fabric, bonded Friction coefficient: 0.05 to 0.15 Dynamic load capacity: up to 200 N/mm² Continuous operating temperature: up to 170°C Motion suitability: oscillating and swing motion Bore tolerance: ISO H7 to H8 by size class
Application Scenarios
Heavy Machinery Swing Joints Excavator boom pivots, loader linkage pins, and crane articulation points where load is high and motion is oscillating.
Elevated Temperature Joints Hot forming equipment, kiln car linkages, and furnace door pivots where continuous temperature exceeds standard PTFE lining limits.
Steel and Metallurgical Plant Rolling mill guides, ladle pivot bushings, and conveyor swing points exposed to radiant heat and heavy load.
Marine and Offshore Cranes Deck crane hinges and mooring system pivot joints where maintenance access is limited and load is concentrated.
Supply and Customization Bushings are produced to drawing for inner diameter, outer diameter, wall thickness, length, chamfer, and lubrication provisions. Production batches are supported with dimensional inspection records covering bore tolerance, wall thickness variation, and lining adhesion, together with lining composition records. Swing angle, contact pressure, and temperature should be provided at selection so that lining grade and wall thickness are matched to the application. Prototype quantities and volume orders are both accepted.
ID: 10-300mm Lining: PTFE and Aramid Fabric Grooves or Holes: Optional Documents: On Request
Frequently Asked Questions

A plain PTFE film lining thins and extrudes under high contact pressure. A woven PTFE aramid fabric distributes load across interlocking fiber bundles, so the lining retains thickness under high load and keeps a lubricant reservoir within the weave.

The fabric lining performs best where the same surface area is not continuously traversed. In oscillating swing motion the load is distributed over a limited arc, and the weave retains lubricant at the contact zone. For continuous rotation, a PTFE film lined variant is normally more suitable.

Continuous operating temperature reaches 170°C. Short excursions above this level reduce lining life and should be reviewed during selection. Radiant heat from adjacent hot surfaces should be considered separately from the ambient temperature.

Recommended shaft hardness is 300 to 600 HV with surface roughness Ra 0.2 to 0.4 micrometers. A hardened and ground shaft is normally required at the rated dynamic load of 200 N/mm², because the lining transfers load directly to the mating surface.

Replace when the woven fabric is worn through and the backing or bond layer becomes visible, when radial clearance exceeds the assembly limit, or when friction and operating noise increase noticeably. Because swing joints wear unevenly across the arc, inspect the loaded sector rather than the full bore.

SF-TEX PTFE Aramid Woven Lining Heavy Load Swing Joints 200 N/mm² Dynamic Drawing Based Supply
Max. load Static   250N/mm²
Very low speed   140N/mm²
Rotating oscillating   60N/mm²
Max.PV(dry running) Short-term operation   3.6N/mm²•m/s
Continuous operation   1.8N/mm²•m/s
Temp. limit   -195℃~+280℃
Friction coefficient   0.05~0.20μ
Max. speed Dry running   2m/s
Hydrodynamic operation   >2m/s
Thermal conductivity   42 W(m•k)-1
Coefficient of thermal expansion   11×10-⁶•K-1
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Zhejiang Shuangnuo Bearing Technology Co., Ltd.
Zhejiang Shuangnuo Bearing Technology Co., Ltd.
Zhejiang Shuangnuo Bearing Technology Co., Ltd. is China SF-TEX Woven Fiber Self-lubricating Bushing, Fabric Wrapped Plain Bearing Suppliers and Wholesale SF-TEX Woven Fiber Self-lubricating Bushing, Fabric Wrapped Plain Bearing Company, we are a manufacturer specializing in producing various self-lubricating copper alloy products using centrifugal casting, continuous casting, metal mold casting, and other processes. Its main products include brass, aluminum bronze, tin bronze, and others produced according to national standard grades. It processes and produces various solid inlaid self-lubricating bearing products on this basis . At the same time, it uses sintering technology to produce bimetallic products and many other types of products. Since its establishment nearly 10 years ago, the company has focused on the research development, and production of various new self-lubricating bearings.

In the process of product production, our company has always insisted on independent casting production of raw materials to ensure the quality of products from the source; during the casting process, the whole process is monitored, and the finished product is tested by spectrometer three times before, in and after the furnace to confirm the material composition of the product. The national testing agency is regularly commissioned to test the material composition and mechanical properties of the product, and authoritative test reports can be provided to customers in need; the company implements integrated production from material to finished product processing and has more than 80 sets of advanced CNC machine tools, CNC lathes, machining centers, and other major equipment. The strong production capacity ensures that the material production is organized for customers for the first time, shortening the production cycle.
  • 0+
    Establishment

    Founded in 2014, Shuangnuo has 10 years of experience in the industry.

  • 0+
    Advanced Equipment

    Strong production capacity ensures that we can organize material production for customers as soon as possible and shorten the production cycle.

  • 0+
    Happy Clients

    There are more than 5,000 cooperative customers around the world.

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