What if my ball screw is damaged?
If your ball screw is damaged beyond repair, we can manufacture a new one from prints or by reverse engineering. No Prints? Our team of engineers can reverse engineer your ball screw assembly to meet your exact specifications. Acme Screw or Lead Screws — We can repair them or replace them with a ball screw design.
How do ball screws work?
How A Ball Screw Works 1 A. The Ball Screw Assembly. The ball screw assembly consists of a screw and a nut, each with matching helical grooves, and balls which roll between these grooves providing the ... 2 B. The Ball Nut Assembly. ... 3 C. Ball Nuts Are Manufactured With Two Types of Ball Return Systems. ... 4 D. Rotating Ball Nut Assembly. ...
What to do if the ball screw is bent?
Check the ball screw alignment. The alignment should be within a few ten-thousandths of an inch. Try to determine if the screw is bent. Check for slide wear and slide alignment. 8. If the nut is accessible, unbolt the nut from the housing and rotate the nut.
Why do you quote ball screw repairs with a replacement option?
We quote all ball screw repairs with a replacement option so you can not only compare your cost savings, but have the option of keeping an extra ball screw in stock to avoid replacement lead times. (Dynatect’s new ball screw lead times are still the best in the industry.)
How do you take apart a ball screw?
0:589:57Removing the Ball Screws for Replacement - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd basically you just have to remove.MoreAnd basically you just have to remove.
How do I change a ball screw?
Break loose the collar nut on the bearing support end of the ballscrew. Remove the collar nut along with the radial bearings and wave washers [4]. Break loose the bolts [5] that secure the radial bearing support to the casting and pull the dowel pins [6] out with the 10-32 bolts. Remove the radial bearing support.
Do ball screws drive back?
Lead screws and ball screws have different tendencies to back drive—lead screws typically have a very low chance of back driving, whereas ball screws are more likely to allow the load to fall.
What are the parts of a ball screw called?
The ball screw consists of a screw and nut with matching grooves and ball bearings that move between them. The unique element of ball screws is the ball bearings, which increase the power efficiency by minimizing the friction during the movement of the ball and nut.
How do you put a ball screw back together?
0:381:55How to reload Ball Bearings into a ball nut. Demonstrated ... - YouTubeYouTubeStart of suggested clipEnd of suggested clipFirst position the nut. So that the thread or flange is correctly oriented to the screw. Turn theMoreFirst position the nut. So that the thread or flange is correctly oriented to the screw. Turn the ball nut onto the screw. So that the lower surrogate is below the screw.
How do you reload ball nuts?
Using wooden dowels that have an O.D. comparable to the diameter of the ball bearings, center the ball nut grooves with the shaft grooves by inserting dowels into each of the ball nut return circuit holes. Remove the second dowel from one end, having the ball return holes up, then fill the circuit with ball bearings.
Are ball screws faster than lead screws?
Generally speaking, ball screws are better for applications that require smooth motion, efficiency, accuracy, precision, and prolonged continuous or high-speed movement. Traditional lead screws are more suitable for simple transfer applications for which speed, accuracy, precision, and rigidity are not as critical.
How many types of ball screws are there?
By ball circulation method, the Ball Screws are divided into return-pipe type, deflector type and end-cap type. And by preloading method, fixed-point preloading (double-nut method, offset preloading) and constant-pressure preloading are selectable.
How does a ball screw drive work?
A ball screw works in a similar way to a conventional lead screw, but the significant advantage of using a ball screw is that it uses ball bearings running in the helical channel to transmit the load.
What thread is used for ball screws?
Ball Screw Thread Form TermsScrew TypeMaterialScrew Dia.SRTAlloy0.375" to 6.000"Stainless0.375" to 1.000"XPRAlloy0.631" to 2.250"SGTAlloy0.631" to 2.250"
How do you identify a ball screw?
1:132:06Identifying Your Ball Screw Assembly. And Lead vs pitch - YouTubeYouTubeStart of suggested clipEnd of suggested clipTell you have a one thousand four ball screw assembly if you had a half-inch screw with a half inchMoreTell you have a one thousand four ball screw assembly if you had a half-inch screw with a half inch lead that'll tell you have an O 502 ball screw assembly.
What is backlash in ball screw?
What is backlash? Backlash is strictly the axial free motion of the ball screw to the ball nut, it is not rotational.
How do you remove ball nuts?
0:572:00Successfully Remove a Ball Nut from a KFTN jack - YouTubeYouTubeStart of suggested clipEnd of suggested clipTake the mandrel and put it on top of the screw ensuring that it is flush with the masking tape nextMoreTake the mandrel and put it on top of the screw ensuring that it is flush with the masking tape next take your ball nut holding. The mandrel and rotate. It up onto.
What is the difference between a lead screw and a ball screw?
The basic difference between lead screws vs ball screws is that a ball screw uses ball bearings to eliminate the friction between the nut and screw and lead screws do not.
What is a ball screw assembly?
The Ball Screw Assembly. The ball screw assembly consists of a screw and a nut, each with matching helical grooves, and balls which roll between these grooves providing the only contact between the nut and the screw.
What are the four common types of ball screw mounting arrangements?
By ball circulation method, the Ball Screws are divided into return-pipe type, deflector type and end-cap type. And by preloading method, fixed-point preloading (double-nut method, offset preloading) and constant-pressure preloading are selectable.
How Are Ball Screws Rebuilt?
When a ball screw is no longer working properly or shows signs of wear, it may need rebuilding. Understanding how ball screws are rebuilt is essential to keeping your machinery running properly. In this article, we’ll discuss how to know when a rebuild is necessary, and the steps it takes to rebuild the ball screw.
Does It Need Rebuilding?
Regular maintenance checks are a part of the everyday routine when it comes to a company’s machines or robotics. These routine checks are a great way to see whether ball screws are operating efficiently. Here are a few signs to look for to see if a ball screw needs help:
Steps To Rebuild
When it looks like rebuilding the ball screw is the best option, use the following steps:
Professional Ball Screw Repair
Rebuilding a ball screw requires a thorough knowledge of each intricate part and how ball screws are rebuilt. We recommend you turn the ball screw over to a professional for repairs. Replacement is an expensive investment, so of course, a rebuild is the better option when possible.
Deciding Between Repairing and Replacing Ball Screws
A ball screw is an important investment when operating linear control systems. As a manufacturer, you count on the ball screw to do its part in the machinery and equipment. Protect that investment with regular maintenance and understand what’s fixable and what isn’t when deciding between repairing and replacing ball screws.
Signs a Ball Screw Is Failing
Watch for the following signs a ball screw may need repairing or replacing:
Why Maintenance Is Important
Cleaning and lubrication are essential for ball screws. Ball screws are designed to create little friction, and lubrication assists with that task. When it’s missing, a breakdown of the ball screw begins. Always use the lubrication recommended by the ball screw manufacturer.
Repair or Replace?
Always choose the repair option when possible. Ball screws are well made with high-quality materials, making them expensive to replace. Thankfully, this also makes them difficult to break when maintained properly.
What is the critical speed of a ball screw?
This is called the critical speed and can be very detrimental to the life of a ball screw. The safe operating speed should not exceed 80% of the critical speed for the screw.
Where is the ball returned in a circuit?
In this type of return system, the ball is returned to the opposite end of the circuit through or along the nut wall, but below the outside diameter through a "V" cap.
What is external ball return?
In this type of return system, the ball is returned to the opposite end of the circuit through a ball return tube which protrudes above the outside diameter of the ball nut.
