TH Self Lubricating Bushings (Click here for sizes)

TH Self Lubricating Bushings (Click here for sizes)

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TH – Steel Bronze Powder with PTFE/Fiber Dry Bearings


  • Suitable for dry running with a low coefficient of friction
  • Low wear rate
  • Good sliding characteristics
  • Transfer film created which will protect the mating metal surface
  • Suitable for rotary and oscillating movement
  • High chemical resistance and lower absorption of water
  • Also performs well with lubrication


  1. PTFE/Fiber mixture thickness 0.01~0.03mm, Lead-free bearing layer provides an excellent initial transfer film,which effectively coats the mating surfaces of the bearing assembly,forming an oxide type solid lubricant film.

  2. Sintered bronze powder thickness 0.20-0.35mm, provides max. thermal conductivity away from the bearing surface, also serves as a reservoir for the PTFE-Fiber mixture.

  3. Low-Carbon Steel, provides high load carrying capacity, excellent heat dissipation.

  4. Copper/Tin plating thickness 0.002mm, provides good corrosion resistance.


Max. load
Static 250 N/mm2 (36,000 psi)
Very low speed 140 N/mm2 (20,000 psi) 
Rotating oscillating 60 N/mm2 (8,400 psi)

Max. speed
Dry Running 2 m/s (400 fpm)
Hydrodynamic operation > 2 m/s (> 400 fpm)

Temp. limit
-195°C~+280°C (-319°F~+536°F)

Max. PV dry running
Short-term operation 3.6 N/mm2*m/s (102,000 psi-fpm)
Continuous operation 1.8 N/mm2*m/s (51,000 psi-fpm)

PV max. hydrodynamic
30 N/mm2*m/s (850,000 psi-fpm)

Thermal conductivity
42 W(m*K)-1
(291 BTU in /(hr)(ft2)(°F))

Coefficient of thermal expansion

Friction Coefficient
Dry 0.08~0.20
Hydrodynamic 0.03~0.08