Reply on topic: Which brand of ball bearings the best for 17" Disc Cutters?
Hi Mike, I know this thread is almost a year old but better late than never, I answer anyway. Your best bet is Timken ball bearings. Specifically you need this for a 17"...Reply on topic: Pollutants from new Sydney tunnel to soar without stricter standards
https://www.smh.com.au/national/nsw/pollutants-from-new-sydney-tunnel-to-soar-without-stricter-standards-20200306-p547ln.htmlReply on topic: Why are all tunnels not excavated via Tunnel Boring Machines?
...Tbm, drilling should be done in other ways to complete the final cross-sectional area. Can it be said that, for each tunnel, tbm alone is not the answer in any case, there is a nee...
cover tunnel photo by: Matt Brown from London, England / CC BY
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