DavyMarkham of Sheffield is nearing completion of two 10.3m (40ft) diameter cutterheads, which will be fitted to the front ends of tunnel boring machines being built by the Robbins Company of Ohio, for a major railroad tunnel project in China.
DavyMarkham is fabricating the cutterheads in the fastest time ever by recruiting additional contract welders, effectively doubling its skilled welding resource, and working 3 shifts, 6 days a week.
This is the latest in a series of cutterhead contracts for Robbins, including a giant 320 tonne, 12.4m diameter unit for China
Product Model | Inside Diameter | Outside Diameter | Thickness |
7602055TVP bearing | 55 | 100 | 21 |
7603050TVP bearing | 50 | 110 | 27 |