Ross CNC specializes in Mori Seiki ball screw repair. Most Mori Seiki ball screws are not on the shelf and can take 3 weeks (or more) to order a new one. Other companies can easily duplicate it, but they are 6 weeks out. The most common problem we see with Mori Seiki is the ball return tubes have broken or flared out. These return tubes are not sold by the OEM. We can manufacture brand new return tubes and restore your ball screw to work like brand new.

Ross CNC can rebuild your existing Mori Seiki ball screw in just 3 to 5 days! Need it sooner? We offer 24/48 hour emergency delivery. We offer the highest quality rebuild by precision grinding your ball screw to .0003 per linear foot lead accuracy. Your ball screw and nut are precision lapped together. Repeatability, tolerance, performance are all guaranteed to work like new for up to 24 months. Your Mori Seiki ball screw will have the same preload and accuracy as a brand new screw.

What will it cost to repair my ball screw? Cost depends on the amount of work your ball screw needs. Our typical savings is over 50% from purchasing a new screw. Call us with the approximate dimensions of your ball screw and let us know exactly what’s wrong with it (excessive backlash, noise in one direction, etc.) and we’ll get you a price right over the phone. We can also arrange for pickup & crating if needed.

How long will my Mori ball screw take to repair? Our normal delivery is just 3 to 5 days. Need it faster? We offer 24/48 hour expedite service. Our goal is to deliver on your schedule.

  • Need a quote for ball screw repair?
    We'll need the approximate length & diameter of your ball screw along with details on the problems you're having.

Need a price for ball screw repair service? Call or email us with the following information:

Approximate overall length & diameter of your Mori Seiki ball screw

Is your ball screw a single or double nut?

What problems are you having with your ball screw? Noisy? Loss of tolerance? Be specific.

When do you want your Mori Seiki ball screw back in production?

Call us with the information and we’ll get you an immediate price & delivery time right over the phone.
Even if your Mori Seiki ball screw is obsolete, we can manufacture and reverse engineer any parts needed to get your ball screw working like new. Even if another company said it can’t be repaired, Ross CNC can do what other repair shops can’t.


Why choose Ross CNC to repair your ball screw?

The best warranty in the industry. All work is guaranteed up to 24 months covering all parts & labor.
Save 50% or more from buying a brand new ball screw. Call with your sizes for an estimate over the phone.

Normal delivery time is just 3 to 5 days. Expedite 24/48 hour delivery is also available.

High precision grinding up to .0002 per foot lead accuracy.

Zero backlash for the highest productivity and repeatability.

Brand new ball screws manufactured in 14 days or less.


Weekend ball screw repair service! If we receive your ball screw by Thursday or Friday, we can perform all necessary repairs, adjustments and testing to get you shipped and in your shop by Monday. This service needs to be set up in advance, just tell the technician that this is a weekend repair. This is a 25% expedite fee additional to our normal charges.