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Mechanical seals completely is very strictly precise parts, manufacturing and gearing accuracy to all request, if assemble not appropriate will influence to seal completely function, so have to notice a following request:1. the gearing machine seal completely the technique request of the stalk(or stalk set) of part and should press form provision: |
Type |
Shaft£¨mm) |
Radial runout£¨mm) |
Surface Roughness£¨Ra) |
|
Shaft beating axial£¨mm) |
Pump |
10-50 |
¡Ü0.04 |
¡Ü1.6 |
h6 |
¡Ü0.1 |
>50-120 |
¡Ü0.06 |
Kettle |
20-80 |
¡Ü0.4 |
¡Ü1.6 |
h6 |
¡Ü0.5 |
>80-130 |
¡Ü0.6 |
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2.Installation of the rotating shaft sealing ring auxiliary (or hub) at the tip of the map should be Chamfer£º |
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3.Static seal ring installation of auxiliary cover (or shell) the end of the hole and the surface roughness and plans should be under the provisions of Table£º |
Type |
Shaft£¨mm) |
C(mm) |
¦Á |
Pump |
10-16 |
1.5 |
20¡ã |
>16-48 |
2 |
48-75 |
2.5 |
>75-120 |
3 |
Kettle |
20-80 |
2 |
10¡ã |
>80-130 |
3 |
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Type |
Shaft(mm) |
|
Pump |
16-50 |
¡Ü0.04 |
55-120 |
¡Ü0.06 |
Kettle |
20-130 |
¡Ü0.1 |
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4. sealing parts, the surface shaft sealed cavity must be cleaned, sealed liquid pipeline and ensure unimpeded.
5. sealed before installing axis surface friction End of the work should be covered with water or low-viscosity lubricants.
6. the installation should be sealed check the installation size, generally single-sealed axial spring to install the largest size for Tolerance ¡À 1.0mm spring for more than ¡À 0.5mm.
7. after the installation of hand-moving rotating ring and ensure a flexible rotation, and certain volatile. Hydrostatic testing and then proceed to the dynamic pressure test, before put into use. |
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