Presentation on theme: "Informações Técnicas Engenharia de Aplicação - BGL 1 Preparation before assembling Keep the assembling area dry and dust free. Check the shaft, housing."— Presentation transcript:
Informações Técnicas Engenharia de Aplicação - BGL 1 Preparation before assembling Keep the assembling area dry and dust free. Check the shaft, housing and tools cleaning. Organize working place. Select the correct tools for assembling. Check the indication on the package and your necessity. The dimensional accuracy and shaft shape accuracy which will be in contact with the bushing must be analyzed. The shaft diameter must be verified with a micrometer in four positions and in two or three plans.
Informações Técnicas Engenharia de Aplicação - BGL 2 It is recommended the IT5 Cylindrical tolerance and in lighter applications (low rotation) we can use IT7. About the shaft tolerance, maximum h10. Shaft Tolerance General Rule: The cylindricity can not be higher than half of the diameter tolerance. This refers to the measurement system in two stages.
Informações Técnicas Engenharia de Aplicação - BGL 3 Adapter Sleeve Assembling 1)Clean the sleeve using solvent, dry it and make sure it is completely dirt free, as well as the shaft in which it will be assembled. Spread a thin oil layer over the external and internal sleeve surface. (it makes the set disassembling easier). 2)To make the sleeve placement in the shaft easier, it is allowed to place a screw driver in the tear and then move it to its correct position. 3) New bearings do not need to be washed, so they must be taken out from the package at the moment of assembling to avoid contamination. Remove the roller bearing protection oil from the bore and from the bearing external diameter and place it on the sleeve. Self-aligning ball bearing with tapered bore : Hydraulic Nut
Informações Técnicas Engenharia de Aplicação - BGL 4 Adapter Sleeve Assembling 4) The Adapter Sleeve assembling on Self-aligning ball bearing with tapered bore, with a diameter bore of 50mm, is extremely easy when using a *Hydraulic Nut and Comparison Clock. *Order a HMV Hydraulic Nut... With the same suffix of the adapter sleeve. Example: For H320 Sleeve, order the HMV 20E Hydraulic Nut. –All the Hydraulic Nuts with the E suffix, with the number are already adapted to the comparison clock use. 5)Tap the Hydraulic Nut on the sleeve, with the piston turned to the bearing, with the use of a flat pin spanner (CPR), to get an adequate contact among the bearing, the sleeve and the shaft. Next, insert the comparative counter in the hydraulic nut and tighten with the nylon screw. Set the display at zero, check the axial displacement table to find the size to be displaced. Self-aligning ball bearing with tapered bore : Hydraulic Nut
Informações Técnicas Engenharia de Aplicação - BGL 5 Adapter Sleeve Assembling 6) From this moment on pump oil to the hydraulic nut, displacing the piston, observing the gap reduction by axial displacement. 7) To reduce the radial gap use the axial displacement value, displayed on the table beside. After the reduction with the axial displacement, in a bearing with a normal gap, the outside ring spins easily but resists to swing. Self-aligning ball bearing with tapered bore : Hydraulic Nut: Axial Displacement Shaft Bore Diameter d Axial Displacem ent s mm 20 a 300,22 35 a 400,30 45 a 500,35 55 a 700,40 75 a 800,45 85 a 1000, a 1200,70 s
Informações Técnicas Engenharia de Aplicação - BGL 6 Adapter Sleeve Assembling 8)When you reach the axial gap wanted, reduce the pump pressure. With the pin spanner (CPR) tighten the hydraulic nut moving the piston back, so the oil returns to the pump, disconnect the pump and remove the hydraulic nut. Make sure the bearing has not moved. 9)Only then you will place the MB Lock Washer. Tighten the Locknut well using a HN Hook Spanner. Align the nut closest tear with the washer tooth and aided by a punch lock the catch. Self-aligning ball bearing with tapered bore : Hydraulic Nut:
Informações Técnicas Engenharia de Aplicação - BGL 7 Adapter Sleeve Assembling 10) Finally, make sure you can spin the bearing easily with your hands, presenting slight resistance when misaligned. Self-aligning ball bearing with tapered bore : Hydraulic Nut: