NNG has become North Americas leading experts in Mori Seiki Ball Screw Repair; after all it's one of the best made and most common machines in the industry. Some of the problems we see in Mori Seiki Ball Screws is that they get pitted and loose in one section from the most used area in your production runs yet when you go further down the tail stock, tolerances get back to normal. Or after the years its develop rust and corrosion from sitting in coolant.
Do not order a new Mori Seiki Ball Screw, let NNG repair or exchange your unit in the Same or 3 days. NNG can and save you 50-70% possibly more from buying a new unit. Plus, you'll have a 4-year full service warranty on your Mori Seiki ballscrew covering all parts and labor.
Our Procedure:
NNG starts with a complete disassembly of your Mori Seiki ballscrew then the we check for straightness and repair as needed we will then precision grind your Mori Seiki Ball Screw till 100% clean to eliminate all uneven wear, in some cases others it may be perfectly fine and just need electro polishing. The correct method to servicing unit is to fully grind the raceways and let them spark out measure with our optical indicators to make sure all low and uneven spots are ground correctly. Now that your Mori Seiki Ballscrew is Straightened, and Correctly Ground we can re-harden screw back to spec and electro polish screw for smoothness. Also if bearing areas are worn the affected areas will be ground sprayed and ground back to ABEC specifications
Next step is to grind ballnut to match your screw NNG will grind (+/- .0002) till true clean up is reached now that both components are prepared for assembly the returns tubes will be inspected for any corrections repairs or replacement. Replacement will be done in house or we just might have them on our shelf. After that we can reassemble and install the unit with the correct oversize balls to compensate for what was ground off screw and nut assembly. Following the assembly NNG WILL lap the entire Mori Seiki ballscrew unit in with special compounds disassemble and clean after corrections are made and reinstall a fresh set of correct size grade 10 chrome steel balls.
The point of choosing NNG to service your Mori Seiki Ball Screw is that it will perform just like new in a reasonable time frame and all work is backed by a tier 1 warranty plan in the industry.
Make the right choice and choose NNG you and your machine will be glad you did
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