Rotary Seals - Dilanda.it

Radial Oil Seal
n Busak+Shamban type TRB and STEFA type DB (DIN 3761 type C)
b
Medium
d2 H8
d1 h11
Figure 20
Installation drawing
General description
B+S type TRB and STEFA type DB are reinforced metal cased
radial lip seals. The supplementary metal inner ring
provides a superior stiffness. This type is not
recommended for use in heavy polluted environments. 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.
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)
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)
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
79