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Building the future

Testimonials

Building the future

What our customers say

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 Ballscrew Repairs

“One day, our production came to a halt when the X and Z-axis ballscrews and support bearings failed—throwing our schedule into chaos and creating a stressful situation for our entire team. We called NNG Industries, and within 24 hours, they had us back up and running. Their precision, reliability, and deep technical know-how gave us the confidence to tackle even our most complex parts. Since then, we’ve seen a clear boost in efficiency and productivity. NNG delivers exactly what modern manufacturing demands.”

– Kay Cobb, Contract Partner 1

Spindle Repairs

“When our EMAG spindle started showing signs of wear, we knew downtime was inevitable. NNG Industries responded immediately, diagnosing the issue and performing a full rebuild with precision and speed. The machine now runs smoother than ever, and we trust NNG to keep our operations moving without compromise.”

– Tim Martin, Tool Design Manager 

Workholding Repair

“Our Schunk 1000 series air chuck on our Mazak CNC lathe was dropping pressure, slipping and causing serious accuracy issues. NNG Industries stepped in with expert-level service, restoring the chuck to peak condition. Their attention to detail and fast turnaround saved us from costly delays. We won’t go anywhere else for critical repairs.”

– Scott Peterson, Director of Thread Line

Steady Rest Service

“We rely heavily on our SMW Autoblok steady rest for long shaft work, and when it failed, we were stuck. NNG Industries not only repaired it—they optimized its performance. Their team understands the nuances of precision workholding, and their service has become an essential part of our maintenance strategy.”

– Michael Barnes, General Manager HYCO Alabama

CNC Machine Sale

“Purchasing our MORI SEIKI SL6 CNC machine was a major investment, and NNG Industries made the process seamless. They helped us select the right model for our needs, handled logistics, and provided setup support. The machine has been a game-changer for our shop, and the post-sale service has been outstanding.”

– Mike Duty, Plant Director of Maintenance

Linear Guide RPLC

“Our THK linear guides were worn and causing vibration issues that compromised finish quality. NNG Industries replaced them with precision and care, restoring the machine’s accuracy and extending its life. Their technical expertise and responsiveness are second to none.”

– Dave Matthews, Purchasing Manager

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ballscrew

dmg mori

Mori Seiki Ball Screw Repair

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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