BORING MACHINE RAM, BORING MACHINE AND METHOD FOR COOLING THE BEARINGS OF A RAM IN A BORING MACHINE

摘要

The ram comprisesa ram body (14),a jacket (16) mounted in a rotary manner in the ram body (14) by means of a plurality of bearings (17, 18) each comprising, a radially inner portion (17a, 18a) coupled to the jacket (16) in such a way that it turns with the jacket (16), and a fixed radially outer portion (17b, 18b),and a bar (15) mounted in the jacket (16) in such a way that it rotates with the jacket (16).;Furthermore, the ram comprises a circuit for a cooling fluid.;This circuit has at least one section configured so the cooling fluid enters into direct contact with the radially inner portion (17a, 18a) of at least one of the bearings (17, 18). In this way, this radially inner portion can be cooled efficiently.