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Manufacturers often turn to ball screws when they require precise positioning for rotary-to-linear motion. They know this screw will provide them with unmatched performance. Machine tools often benefit from these highly efficient parts. They also appear on missiles and aircraft thanks to their outstanding reliability. However, ball screws don’t last forever.
Common Reasons for Ball Screw Failure
There are several reasons why a ball screw might fail. An electronic malfunction could bring about this failure or it might be the result of poor design. When the preload is too high, the ball screw is at a higher risk of failing, and the same holds when there is a misalignment. Environmental factors and human error often lead to a ball screw failing. The failure may also come about because of a lack of maintenance or normal wear and tear.
Warning Signs a Ball Screw is in Danger of Failing
Pitting or corrosion of a ball screw is a sign the screw is deteriorating and needs repair. Heat discoloration suggests the impending failure of the ball screw. If the screw no longer operates smoothly, it needs repair. These signs suggest the screw wasn’t properly lubricated or was misaligned.
Failure of the screw as a result of excessive vibration is easy to spot. A bent screw share or bearing housings that are no longer aligned both indicate this problem. Clicking noises from a ball screw are another cause for concern. A damaged return tube is making this noise or there is excessive buildup. If positioning accuracy has become an issue, contamination or support-bearing endplay is to blame.
Any change in the way a machine operates requires investigation. Prompt action helps to minimize the damage. It also minimizes downtime and Ball screw repair services are typically less costly than replacement of the ball screw, so a company needs to act right away to save time and money.
Repair or Replacement?
It might seem easier to just replace the screw. Thanks to the manufacturing process, most ball screws can be repaired at a much lower cost. In fact, a company might save up to 70 percent by having the ball screw repaired rather than replaced.
Choosing a Repair Provider
A company needs to find a reputable ball screw repair provider with years of experience. Ask if the provider offers a free assessment of the ball screw. In addition, ask if they offer reloading, reconditioning, and replacement services. This ensures the company has options when it comes to addressing the problem. Furthermore, learn whether the provider can replace the ball screw if it is beyond fixing.
Learn whether the provider offers emergency services. Any downtime is unacceptable in today’s competitive market. Some repair providers offer the option of temporarily fixing the screw until a replacement arrives.
Work with an ISO 9001-certified provider. Ensure they have the equipment on hand to do all tasks and employ quality assurance team members. When this provider is found, a company knows it has somewhere to turn when a ball screw fails. This provider becomes a partner who understands the importance of tolerances and performances. The peace of mind that comes with having this partner is priceless.
