The basic tribological phenomena of journal bearings can be investigated using this unit. A lever with a sliding weight attached to it is connected to the bearing housing. This enables an external moment to be set corresponding to the friction moment generated in the bearing. The journal bearing to be investigated consists of a stainless steel bearing journal and the free-moving gunmetal bearing housing. A three-phase ac motor with a frequency converter for speed control serves as the drive. Another lever, combined with a set of weights, applies the defined load to the bearing. It is possible to view the bearing journal and the lubrication gap through the transparent cover. The continuously adjustable speed, as well as the temperature of the lubricant, is indicated digitally on the control unit. Lubricant is supplied by a drip-feed lubricator that feeds oil to the shaft via two lubrication channels. A drip tray collects the oil that leaks out.
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Frequency of oscillation of different rods supported by the pulleys enables the coefficient of friction to be determined
Set of 5 rods and tubes in mild steel, brass and aluminium alloy.
Self-contained, bench-mounted apparatus, to measure slipping friction in an oscillating system.
Two contra-rotating `V` pulleys of variable centres distance driven by a variable speed motor.
Stop watch provided
Variables to include weight of specimens.
The wall mounted apparatus consists of a rotating circular table on a vertical shaft, with a variety of interchangeable end pivots and seating.
End pivots in brass and steel seating have inclusive core angles of 60, 90, 120 and 180 (flat) degrees; additionally a ball thrust bearing may be installed.
Demonstrates the relationship between friction torque and axial thrust; determines the influence of bearing cone angle.
Pivots brass, and the seating mild steel.
Pure torque applied by loading cords and weight hangers acting over pulleys onto the rotating table.
An Instruction manual for student and lecturer supplied.
Thrust loads applied directly onto the rotating table.
Set of weights.
The wall mounted apparatus consists of a fixed pulley, a second interchangeable pulley and a loaded rope belt with 2 load hangers in a complete loop.
Four pulleys with vee grooves typically of 60, 90, 120 degrees and flat rim supplied.
Determination of the coefficient of friction between a steel pulley and cotton rope; investigate belt tensions; evaluate effects of different `V` angles in the pulley, and of different lap angles.
An Instruction manual for student and lecturer provided.
Alternative mounting positions provided to vary the lap angle.
Set of weights.
Three different bearing materials for sliding bearing shells
Stainless steel shaft
Drive by cable drum and weight set.
Base plate of anodised aluminium.
Experiment in sliding bearing friction with various material pairings and comparison with rolling bearings
Box to house the components.
Flywheel of galvanised steel.
Experiments in rotational dynamics possible.
Force gauge overload-proof, with clearly legible transparent dial.
Two friction bodies each with two different surfaces.
Two supporting friction surfaces with a total of three different surfaces.
Two cable drum driving speeds.
Fundamentals of mechanical friction.
Friction body and force gauge stationary, supporting friction surface motor driven.
Box to house the components.
Three support friction surfaces with a total of four different surfaces
Carriage driven by cable pulley and motor
Mechanical friction between two solid bodies
Friction body stationary, support friction surface in a moving carriage
Two driving speeds via a graduated cable drum
Force measuring unit: force gauge and adjustable air damper
Force measuring unit height-adjustable
Adjustable air damper - with damping: Measurement of a mean friction force adjusted by disturbances, without damping: Slip/stick effects measurable
Two friction bodies each with two different surfaces
Lines of action of friction force and tensile force always parallel
Box to house the components.
Friction body which can be set up to give 3 different surface options
Experiments relating to Hooke's Law, friction and the inclined plane
Rail from forming the inclined plane
Steel helical spring
Supplementary set for experimental unit.
Box to house the components.
Transparent tank with overflow ensures constant water inlet pressure in the pipe section for experiments with laminar flow
Investigation of the pipe friction in laminar or turbulent flow
Flow rate adjustment via valves
Twin tube manometers for measurements in laminar flow
Dial-gauge manometer for measurements in turbulent flow
Water supply via or via laboratory supply for experiments with turbulent flow.
A unit for the detailed study of fluid friction head losses which occur when an incompressible fluid flows through pipes, fittings and flow metering devices.
A substantial floor standing tubular steel frame supports test circuits comprising:
4 smooth-bore pipes of different diameters ranging from 4.5mm I.D. to 17.2mm I.D.
artificially roughened pipe
90o bends (large & small radii)
90o elbow
90o mitre
45o elbow, 45 Y, 90 T
Sudden Contraction
Sudden Enlargement
Globe Valve
Perspex Orifice Meter
Perspex Venturi
Gate Valve
Ball Valve
Inline Strainer
38 Tapping Points
Perspex Pipe Section With A Pitot Tube & Static Tapping.
