Non-Contact Seals - Vikram machine spindles

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GMN Labyrinth Metal Seals
Specials
øID øe
øOD
W
Mounting tolerances
(mating parts)
In addition to our standard products, GMN offers many special solutions.
Reduced width
Series DL is engineered specifically for limited space designs.
For shaft diameters up to 65mm, the seal width is only 4 mm.
This small seal could protect existing Contact Seals against chips
and abrasive particles reliably and the lifetime of the complete
sealing system increases greatly.
Different material
In applications against aggressive and corrosive media, GMN
produces Labyrinth Seals Type L and M made from alternative
material:
- Inner ring made of stainless steel
- Outer ring made of aluminium or zinc
Special sizes
On request, GMN can also produce customized dimensions.
W
Tolerances
Surrounding constructions (mating component)
Fits
Housing: K7
Shaft: h6
Surface: Rz < – 16 µm; Ra < – 3.2 µm
Assembly
“l” Length (chamfer of housing and shaft) depending on the width
“W”: l = 0.1 x W
W
< 4mm >
0.1 xW
15°
øID
h6
øOD
K7
Aluminium outer ring
The softer aluminium outer ring may be deformed during transport
and arrive out of roundness. When the seal is then pressed
into the housing, the outer ring easily re-forms to the circular
housing.
The outer ring could also be wider by max. 0.1mm than the inner ring.
GMN Non-Contact Seals with reduced width
Type DL
ID OD W e S ax
max. speed Weight Type Part no. Part name
0.1 xW
15°
GMN Metal Seals are pressed through a round steel ring to calibrate
the outer ring. After this process the outer ring widens again a little
bit due to its elasticity.
15 26 4 24 0.35 53,000 0.010 DL 306347 DL 15 x 26 x 4
20 28 4 26 0.38 60,000 0.010 DL 306354 DL 20 x 28 x 4
25 37 4 34 0.38 41,000 0.020 DL 306364 DL 25 x 37 x 4
Outer ring after calibrating
30 42 4 39 0.38 39,000 0.020 DL 306188 DL 30 x 42 x 4
35 47 4 44 0.40 32,000 0.025 DL 306190 DL 35 x 47 x 4
40 52 4 49 0.40 27,000 0.030 DL 306365 DL 40 x 52 x 4
45 62 4 59 0.40 22,000 0.045 DL 306366 DL 45 x 62 x 4
50 62 4 59 0.40 20,000 0.030 DL 306367 DL 50 x 62 x 4
55 68 4 65 0.40 20,500 0.040 DL 306368 DL 55 x 68 x 4
60 72 4 68.5 0.40 18,500 0.040 DL 306192 DL 60 x 72 x 4
63 80 4 76 0.40 14,000 0.060 DL 306186 DL 63 x 80 x 4
65 80 4 76 0.40 14,000 0.055 DL 306194 DL 65 x 80 x 4
Plus-tolerance OR (mm)
0.30
0.25
0.20
0.15
0.10
0.05
110 130 10 125 0.70 9,900 0.300 DL 306196 DL 110 x 130 x 10
0
120 140 10 135 0.70 8,800 0.320 DL 306198 DL 120 x 140 x 10
0 20.00 40.00 60.00 80.00 100.00 120.00 140.00 160.00 180.00 200.00
Inner diameter [mm]
ID = Inner diameter [mm] W = Width
c = Groove width
S ax
= Axial clearance [mm]
OD = Outer diameter [mm] e = Gap diameter [mm]
Max. speed [rpm]
Weight [kg]
18 19