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Rotary Seals - Dilanda.it

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GAMMA Seal<br />

n GAMMA-seal type TBP/RB<br />

b<br />

Medium<br />

(Dirt)<br />

d max<br />

B 1<br />

d 1<br />

d 2<br />

Figure 72<br />

Installation drawing<br />

General description<br />

The design of mainly used GAMMA seal TBP/RB is based on<br />

many years of experience in such applications. The total<br />

axial force of the sealing lip is given by elastomer<br />

pre-stretching together w<strong>it</strong>h lip deformation force which<br />

depends on the elastic<strong>it</strong>y of the rubber material, geometry<br />

of the sealing lip and assembly pos<strong>it</strong>ioning against the<br />

counter-face. The metal shell is protecting the seal from<br />

solids and contributes to exclude other pollution media by<br />

centrifugation, allowing a good drainage after immersion<br />

in liquids.<br />

Advantages<br />

- Good dynamic sealing<br />

- Very good protection against solid pollution particles<br />

- Modern lip design provides low axial forces<br />

(low power loss)<br />

- Small f<strong>it</strong>ting width<br />

- No supplementary retention’s needed<br />

Application examples<br />

- Transmission systems (e.g. gearboxes)<br />

Technical data<br />

Pressure: No pressure<br />

Temperature:<br />

Speed:<br />

Media:<br />

-40°C to +200°C<br />

(depending on material)<br />

up to 20 m/s<br />

mineral and synthetic lubricants<br />

(CLP, HLP, APGL etc.)<br />

B+S/STEFA have carried out several thousand compatibil<strong>it</strong>y<br />

tests. Please ask for details.<br />

Housing :<br />

Carbon steel - chromate treated<br />

(N7MM) or zinc plated (4N04, 4V04)<br />

Stainless and acid-proof<br />

steel on request<br />

Important Note:<br />

The above data are maximum values and cannot<br />

be used at the same time, e. g. the maximum<br />

operating speed depends on material type,<br />

pressure and temperature.<br />

- Pumps<br />

- Electrical motors<br />

- Machinery industry (e.g. tool machines)<br />

- Wheels and heavy-duty axles<br />

172<br />

Latest information available at www.busakshamban.com<br />

Ed<strong>it</strong>ion April 2006

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