The FRICTION range enables clear and comprehensive learning of FRICTION and TRIBOLOGY covering a variety of theories and topics. An understanding of the way in which Friction acts is  fundamental when studying the application of loads on a variety of surfaces. The FRICTION range forms a comprehensive set of equipment, from simple inclined planes to complete Tribology Trainers suitable for demonstration and experimental work.

HFN1 Friction on an Inclined Plane

The compact bench top unit has a sturdy base plate, non-slip feet and centravertical pillar.

HFN1c Tray mounted on bearing for HFN1

HFN1c Tray mounted on bearing for HFN1 

HFN3 Clutch Plate Friction Apparatus

The wall mounted apparatus comprises a lower stationary plate attached to a sturdy wall mounting bracket. On top of this stationary plate sits an upper plate whose shaft rotates in ball bearings. Sandwiched between the lower and upper plates are three interchangeable friction discs of different diameters. Each one sits onto location pins in the lower plate. The minimum force on the friction disc is the self weight of the upper plate, but the contact pressure can be increased by adding weights to the upper plate. Pure torque is applied to the upper plate through two loaded cords and pulleys. The cords wrap around a groove in the upper plate. A set of calibrated weights and load hangers are supplied which enable the loading force to be varied and applied torque to be adjusted also.

HFN4 Pivot Friction Apparatus

The wall mounted apparatus consists of a rotating circular table on a vertical shaft at the bottom of which a variety of end pivots can be attached. The table rotates on an interchangeable seating selected to match the conical angle of the pivot. Pure torsion is applied to the table by a pair of cords diametrically opposite on its periphery and passing over pulleys to load hangers. The standard apparatus is supplied with four sets of pivots with vertex angles of 60° 90° 120°and 180° (flat). The seating is in mild steel and the pivot is in brass. In addition a ball thrust bearing is included to show the difference in performance. Students can study the effect of the conical angle of a pivot bearing and obtain the coefficients of friction for bearings of different design. All load hangers and calibrated weights are supplied.

HFN6 Bearing Friction Apparatus

This experiment provides an opportunity to study the efficiency of journal bearing friction over a range of commonly used materials. The wall mounted apparatus consists of a flywheel on a horizontal shaft carried in a pair of similar bearings, the flywheel being used to even out small variations in friction. The shaft is of mild steel, and interchangeable bearings in a range of materials are provided. For comparison a ball or roller bearing is available to demonstrate the advantages of rolling rather than sliding contact. Torque is applied by a loaded cord wrapped round the flywheel shaft. A set of calibrated weights and load hanger is supplied for loading the flywheel.

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