Patent Number: 7,086,938

Title: Grinding segment and grinder stone

Abstract: The invention relates to a grinding segment comprising a ceramic part manufactured of grinding ceramic material and provided with a fastening hole, through which the grinding segment is attached to a frame of a grinder stone by means of a fastening bolt. A fastening sleeve is arranged in the fastening hole, and the fastening bolt is supplied through the sleeve. The fastening sleeve is pressed against the frame of the grinder stone due to the fastening force. A space filled with bonding agent is formed between the ceramic part of the fastening sleeve to join them together. The invention further relates to a grinder stone comprising a cylindrical frame and grinding segments according to the invention.

Inventors: Tuovinen; Olli (Tampere, FI)

Assignee: Metso Paper Inc.

International Classification: B23F 21/03 (20060101)

Expiration Date: 8/08/02018