Rotary Seals - Dilanda.it

Radial Oil Seal
n STEFA 1B/APJ and 2B/APJ types - housing as per DIN 3760-3761
The design of the radial seal corresponds to STEFA Type
1B/CC and 2B/CC.
The sleeve remains the same for all kind of radial seal
design.
b
b
Medium
2B/APJ
1B/APJ
d2 H8
d1 h11
Figure 35
Installation drawing
Product description
STEFA 1B/APJ and 2B/APJ types are radial lip seals with
partially rubber covered outer diameter.
1B/APJ type recommended for use in heavy polluted
environments and where a good axial retention force is
required with a good heat transfer as well. The type 2B/APJ
is recommended for aluminium or soft metal housings that
may be scratched at assembly by metal frame of the seal.
Applications examples
- Transmission systems (e.g. gearboxes)
- Pumps
- Machinery industry (e.g. tool machines weaving
machinery)
- Axle Hubs and axle for heavy-duty applications
Advantages
- Good static sealing
- Compensation of different thermal expansion
- Higher bore surface roughness is allowed
- Do not require shaft treatment (hardening and grinding)
- Modern lip design provides low power loss
- Good heat transfer to outside
Technical data
Pressure:
Temperature:
Speed:
Media:
up to 0.05 MPa
-40°C to +200°C
(depending on material)
up to 10 m/s
(depending on material)
mineral and synthetic oils
(CLP, HLP, APGL etc.)
- Quick servicing (No shaft rework required)
B+S/STEFA have carried out several thousand compatibility
tests. 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
117