Rotary Seals - Dilanda.it

Radial Oil Seal
n Busak+Shamban type TRF and STEFA type DC (DIN 3761 type CS)
b
Medium
d2 H8
d1 h11
Figure 21
Installation drawing
General description
B+S type TRF and STEFA type DC are reinforced metal cased
radial lip seals with dust lip. The supplementary metal inner
ring provides a superior stiffness. This type is recommended
for use in heavy polluted environments. To achieve a long
lifetime a suitable lubricant between the two sealing lips
should be applied. As the static sealing between housing
and metallic shell is limited, low viscosity media can
“creep“. Better performance can be achieved with epoxy
based resin O.D. coating. This special treatment is on
request.
Advantages
- Superior radial stiffness, especially for very large
diameters
- Very good fitting stability avoiding pop-out of the seal
- Modern lip design provides low radial forces
- Cost effective for expensive elastomer materials
- Suitable for use in combination with axial seal (V—Ring
and GAMMA-seal)
Application examples
- Transmission systems (e.g. gearboxes)
- Pumps
- Electrical motors
- Machinery industry (e.g. tool machines)
- Heavy engineering applications (e.g. mills in steel
industry)
Technical data
Pressure:
Temperature:
Speed:
Media:
up to 0.05 MPa
-40°C to +200°C
(depending on material)
up to 30 m/s
(depending on material)
mineral and synthetic lubricants
(CLP, HLP, APGL etc.)
B+S/STEFA have carried out several thousand compatibility
test. Please ask for details.
Important Note:
The above data are maximum values and cannot
be used at the same time, e. g. the maximum
operating speed depends on material type,
pressure and temperature.
Latest information available at www.busakshamban.com
Edition April 2006
87