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CAT NO: DIDACTICNLE-Export-031018
Study Of Rotary Bearings.
Study Of Rotary Bearings
The study is conducted with radial or axial loading, with or without preloading of the assembly.
Specially written simulation software is used to compare the theoretical and the actual performance (only in French version).
Teaching objectives
Axial studies with the basic system.
Measurement of the axial deflection of a bearing.
Determination of the laws governing axial bearing performance.
Experimental determination of the axial rigidity using two bearings.
Evaluation of the effect of preloading on axial rigidity.
The effect of bearing play on the accuracy of rotation.
Multi-axial studies with the optional shaft instrumentation.
Allowance for and measurement of shaft deformation.
Characterisation of roller bearings, measurement of the entrainment couple and comparison with ball bearings of different types.
Review of the methods of calculation.
Technical specifications
The test bench consists of a shaft and
pair of bearings mounted within a rigid bed plate. A preload can be
applied to the shaft by a hydraulic jack mounted on its axis.
Measurement of the hydraulic pressure in the jack gives the value of the
force applied. Another jack applies a radial load to the shaft and the
displacement is measured with a micrometer. Both jacks are powered by a
manual pump.
The optional shaft fitted with strain
gauges allows measurement of the loading of the assembly and the
deformation of the axle under axial or radial loading.
An extensometer bridge is necessary to carry out the experiments.
Composition :
Shaft diameter: 25 mm
Displacement between bearings: 85 mm
Maximum loading: 10 kN
Maximum preloading: 5 kN
Bearings supplied:
1: ball bearing 6305
2: ball bearing oblique contact 7305
3: tapered roller 30305 ((x = 11,180)
4: tapered roller 31305 ((x = 28,480)
Shaft loading at 00 (axial), 45′ and 90′
Equipment Package :
Standard equipment
consisting of:
Test bench for the study of rotary bearings
Four pairs of bearings
Special tools for assembly and disassembly
AGUIR software for bearing performance simulation and for display of results under MS EXCEL
Optional equipment package consisting of :
Shaft fitted with strain gauges for
study of multiaxial loading with software for analysis of the
extensometry results under MS EXCEL .`
Strain bridge.
Dimensions and weight.
70 x 42 x 30 cm.
Weight : 40 kg.
Essential requirements.
PC computer with MS EXCEL installed
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