4�4

MEDIA

For the system to operate correctly, it is necessary to lubricate the seal at the sealing gaps. We recommend using oil

lubrication rather than grease lubrication.

•

For an oil lubrication that is permanent and does not require upkeep, the oil level must be between the 2/3 of the

inside diameter of the seal and the middle of the axis. We recommend using SAE 80 and SAE 90 gearbox oils

for a better operation.

•

Grease lubrication requires particular attention. It is avoided due to the hydrodynamic conditions of lubrication

that cannot be met, which could lead to significant wear and therefore a premature deterioration of the seal. If

grease lubrication is used, the grease must not be inserted between the friction surfaces of the seal.

4�5

DETERMINING THE FRICTION POWER

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8

1.9

2.0

20

40

80

60

100 120 140 160 180

200 220 240 260 280 300 320

PS

KW

0.074

0.147

0.220

0.294

0.368

0.441

0.515

0.590

0.660

0.734

0.810

0.882

0.955

1.030

1.180

1.250

1.320

1.400

1.470

1.100

200 r.p.m

250 r.p.m

320 r.p.m

400 r.p.m

500 r.p.m

630 r.p.m

780 r.p.m

1230 r.p.m

980 r.p.m

Outside diameter of seal face (mm)

5.

Design recommendations

5�1

DETERMINING

THE INSTALLATION

DIMENSION "I"

The installation dimension "I" affects the floating seal

position, O'Ring compression and axial force. For

standard applications using the BECA 830 profiles, a

value of 3 mm (+/-0.5) must be taken into consideration

for the installation dimension

We recommend increasing the assembly dimension to

prevent a load on the seal surfaces that is too large,

which leads to heating during significant peripheral

speeds (5 to 10 m/sec).

3

4

5

6

7

8

9

10

1

2

3

4

5

6

7

8

9 10

Installation dimension l (mm)

O’Ring cross-section Ød2 =6.5 - 7.5 mm

O’Ring cross-section Ød2 = 12.7 mm

O’Ring cross-section Ød2 = 16 mm

O’Ring cross-section Ød2 = 8 - 10 mm

EN-TETE CONTINU

QUALITY & EXPERTISE FOR YOUR SEALING NEEDS

FACE SEALS - FLOATING SEALS

12