| 摘要 |
The invention provides an apparatus for the formation of man-made vitreous fibres which comprises a housing, a non-rotatable sleeve (3) mounted in the housing, a rotor (1) by which mineral melt can be thrown radially as fibres, a drive shaft (2) within the sleeve and coaxial with the rotor and sleeve, an associated motor (4) for driving the drive shaft, at least one set (5, 6) of roller bearings between the non-rotatable sleeve on the one hand and the drive shaft or rotor or both on the other hand and in the apparatus at least one set of roller bearings is made of a ceramic material. Such materials are advantageous in that they can withstand especially high temperatures and are capable of being lubricated with water.
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