Polymer Journal Bearings

Thordon XL

• maximum dynamic working pressure to 5.5 MPa (800 psi) in limited motion
• low co-efficient of friction (typically 0.13-0.20)
• high (dry) and good (wet) resistance to abrasion
• high resistance to shock loading and vibration

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Thordon SXL

• maximum dynamic working pressure to 10.0 MPa (1450 psi) in limited motion
• lower coefficient of friction (typically 0.08-0.15) than XL
• higher dry PV (Pressure Velocity) rating than XL
• lower dry and higher wet resistance to abrasion than XL
• dry start-up capability as a vertical pump bearing
• high resistance to shock loading and vibration

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Thordon COMPAC

• low coefficient of friction (typically 0.08-0.15)
• used in a range of "open" water lubricated propeller shaft bearing systems
• to promote early formation of a hydrodynamic film between the shaft and bearing, the lower (loaded) portion of the bearing is smooth, while the upper half of the bearing incorporates grooves for flow of the water lubricant/coolant.
• approved by all Classification Societies for 2:1 L/D ratios

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Thordon HPSXL

• maximum dynamic working pressure to 15.0 MPa (2175 psi) in limited motion
• lowest coefficient of friction (typically 0.06-0.12)
• moderately abrasion resistant (lower abrasion resistance than XL or SXL)
• high resistance to shock loading and vibration
• HPSXL may be polymerized into a bronze shell (HPSXL TRAXL)

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Thordon GM2401/Composite

• maximum dynamic working pressure to 3.0 MPa (500 psi) in limited motion
• commonly used for rotating applications in abrasive water conditions such as pump and dredge bearings up to maximum working pressure of 1.4 MPa (200 psi)
• outstanding abrasion resistance - two or more times that of rubber
• significantly lower coefficient of friction than rubber
• higher resilience and stiffness than rubber
• available with either polymer or metal bearing shells

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ThorPlas^®

• engineered thermoplastic (non-elastomer) bearing grade
• maximum dynamic working pressure to 31.0 MPa (4500 psi)
• low coefficient of friction (typically 0.10-0.17)
• very low wear in non-abrasive environments
• reasonable abrasion resistance - less than Thordon elastomer grades, but better than bronze, epoxy phenolics and many other non-metallic bearing materials

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