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Hi, Kevin here with an update on the Nakamura-Tome WT-300 rebuild. We got lucky—the saddle and turret head on the base didn’t need major rework to bring everything back to centerline, saving us a ton of time. The downside? This machine has no plugs; everything is hardwired, which made disassembly a nightmare. Labeling everything was a huge task, but it’s done. The machine is filthy, especially the sub-spindle and its motor. The upper X and Y axes look okay but have been neglected. The ball screw is shot, likely because it runs constantly in one area in a cell. We’ll scrape and align everything, replace ball screws and bearings, and check the motors. It’s a big job, but we’re tackling it. We’ve got the main and sub-spindles, more ball screws, motors, wipers, and slides to go through. The bed is nasty and needs to be pulled out for pressure washing and regrinding. I can grind the top sides in-house, but the bottom ways are trashed, and my rail gets in the way. We’ll send the bed to a company with a wider column base to grind it flat, positioning it on its side for precision. We’re using a gantry to support the top, but a small arm is blocking us, so we may add another gantry or extend the current one to lift the bed out safely. Some ball screws will be rebuilt, others replaced, based on the customer’s needs. We’ll also replace worn cabling and lubrication to ensure reliability, avoiding future issues under warranty. The frame is tricky to work around, so we’re opening it up for more leeway. Stay tuned for another video showing the bed removal, cleaning process, and the cleaner we use. I’ll also share how we manage the hardwired mess—no plugs anywhere! Thanks for watching! |