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3.2 Seal attachment assembly
(1) Door adapter
It is screwed in the door of the ultracentrifuge, and supports the entire seal attachment
(see Fig. 7).
(2) Bearing housing
The bearing housing holds the bearing made of white metal, and is engaged with the rotor
shaft (D). It is supplied with lubricant and cooling water from the peripheral connector (see
Fig. 8).
Fig. 7 Door adapter
(3) Seal body assembly, collar and screw sockets
The seal body assembly consists of seal piece which is in contact with the rotor seal and
transfers sample, etc., pipe, spring, manifold and connector. The seal body assembly is
pushed against the seal by the spring. As for materials, the seal piece is made of tungsten
carbide and others are made of stainless steel.
The collar which is made of stainless steel is put on the outside of the seal body assembly,
and seals the cooling water which cools the seal body assembly.
The screw sockets (A) and (B) fasten the seal body assembly and collar (see Fig. 9 and
10).
Fig. 8 Bearing housing
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