Recently, Luoyang LYC bearing co., LTD. and China railway tunnel group jointly held Tunnel Boring Machine remanufacturing main bearing usage assessment meeting in Guangzhou. Luoyang LYC bearing co., LTD. successfully passed the expert group evaluation for Guangzhou metro line No. 4 south 5 standard items project of Tunnel Boring Machine remanufacturing assort main bearing, which makes LYC bearing co., LTD. become the first domestic through industry evaluation enterprise of Tunnel Boring Machine remanufacturing main bearing. It marks that firstly break Tunnel Boring Machine main bearing remanufacturing technology.

Since last year's computer use the complete set of Tunnel Boring Machine remanufacturing main bearing which the enterpriseassort for the project, so far it has been tunnelling 1.5 kilometers on the complex condition of Guangzhou metro line No. 4 south 5 standard items.

After that Nine industry leading experts argue the bearing usage and inspection condition, they think Clearance design and craft indicators planning have the advancement, the technology indicators reach world standard.