Pivot Friction Simulator
(DN - 004)

1 Circular turntable with vertical shaft 2 Opposite pulleys for torsional loading with strings 3 A special fixing is present to accept a variety of end pivots 4 Mating key used for mating pivots with the apparatus 5 Two weight hangers 6 Pivot bearings

  • Investigation of the relationship between frictional torque and axial thrust.
  • Determination of the influence of the bearing cone angle.
  • Obtaining the coefficient of friction for different bearings.
  • pivot bearing
  • main diameter : 20 mm
  • Flat pivot (180-degree angle)
  • Conical pivot (120-degree angle)
  • Conical pivot (90-degree angle)
  • Conical pivot (60-degree angle)
  • Pivot Friction Simulator (DN - 004)
  • Hard copy user manual
  • Pivots brass, and the seating mild steel.

The Pivot Friction apparatus (DN – 004) tends to demonstrate the relationship between friction torque & axial thrust. The unit also determines the influence of bearing cone angle.

  • The apparatus consists of a rotating circular turntable attached onto the end of a vertical shaft.
  • The shaft is held vertical within a sturdy wall bracket that must be attached to a rigid vertical surface, i.e. a wall.
  • At the lower tip of the shaft a special fixing is present to accept a variety of end pivots.
  • The seatings are made from different materials and with different internal cone angles.
  • Pure torsion is applied to the table through a pair of diametrically opposite loaded cords and pulleys.
  • The unit is supplied with mating Seatings used for the end pivots, The seatings positively locate at the bottom of the wall bracket so that they mate with their respective seatings but do not rotate under testing.
  • The unit is provided with a set of calibrated weights and the hangers, that are used to vary the thrust on the end pivot.
  • Weights are then added to the load hangers to calculate the necessary parameters.