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Linear Motion Tips

Covering Linear Motion Systems, Components and Linear Motion Resources

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Accuracy

Repeatability and Accuracy: What’s the Difference?

April 29, 2016 By Danielle Collins 2 Comments

There are numerous ways to classify the performance of linear positioning devices such as ball screws, belts, and rack and pinion systems, but the terminology can be confusing. The two most common terms, accuracy and repeatability, and are often used interchangeably. When someone says that a ball screw is very accurate, they may really mean that […]

Filed Under: Linear actuators (all), Linear drives (all) Tagged With: Accuracy, Ball Screw, Belt Drive, linear drive, precision, rack and pinion, repeatability

High-class linear guides: How industry quantifies rail accuracy values

February 5, 2015 By Danielle Collins Leave a Comment

I once overheard a colleague, relatively new to linear motion and eager to be helpful, tell a customer, “H stands for our high-class rail.” While the thought of a “high-class” rail was amusing, technically she was correct. In profiled linear guide terminology, H is the designation for high class … … high accuracy class, that […]

Filed Under: Applications, Ball + roller guides, Slides + guides (all) Tagged With: Accuracy, linear guide, Linear Guides, linear motion

Make no mistakes about ball screw lead error

November 21, 2014 By Danielle Collins 2 Comments

Updated July 2016 || Accuracy is an important criteria in ball screw selection. But with two production methods and four different standards governing ball screw accuracy, making the best selection for your application can be a challenge. Understanding these standards and terminology, as well as the differences between the two manufacturing methods, will help you choose a ball screw […]

Filed Under: Ball + lead + roller screws, Linear drives (all) Tagged With: Accuracy, Ball Screw, Linear Drives, linear motion

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