Why do engineers place tolerances

Engineering tolerance is also a permissible limit in measured value or physical property of a material manufactured object. In mechanical engineering, tolerance is space between bolt and nut. In other words, we can say that engineering tolerance is consideration of dimensions, properties or conditions which with some variation would not be able to affect the functioning of a system, machine or structure.

So why do engineers place tolerances on dimensions? If an engineer leaves dimension without tolerance, it will result in improper fits, delay, and high cost.

Tolerance is a total amount for which a particular dimension is permitted to vary. It is the difference between maximum and minimum limits. Tolerance is giving acceptable deviation for a given dimension. Engineers place tolerance on dimensions because it provides the opportunity to manufacture individual components in different companies at different locations and enable engineers to assemble them successfully.

This article will answer the question, why do engineers place tolerances on dimensions, by considering some of the significant benefits. Going back to the question asked in the beginning, Why do engineers place tolerances on dimensions?

Engineers place tolerance on dimensions to allow variances in an acceptable range in order to make a product function properly. The amount of tolerance depends on the degree of variations in a particular object.

In the field of science and mathematics, engineers are using tolerance on a regular basis. In a nutshell we can say that in field of engineering, tolerance is one of the most significantly needed elements to enhance the quality and performance of the product. Why do engineers place tolerances on dimensions? The answer is no. The hard part is deciding which tolerances matter most and how tight or loose those tolerances should be. A tight tolerance allows for relatively minimal variation in size, position, or other physical properties, while a looser tolerance permits a little more leeway.

However, this precision comes at a steep price. In general, the tighter the tolerance, the more the product will cost to manufacture. For example, if you need to manufacture a very precise moving part that will fit snugly inside another part without causing friction, then you probably need to set a very tight dimensional and radial tolerance.

A skilled contract manufacturer will help you estimate the most cost-effective tolerances for your products. For instance, it is possible to underestimate or overestimate tolerances. These miscalculations usually come from:.

Skilled contract manufacturers have a deep understanding of materials, manufacturing tools and methods, product functionality, and aesthetics. If you want to see firsthand why tolerances are important in manufacturing, you need to make sure you and your contract manufacturer are on the same page. This means expressing your expectations in as much detail as possible. When you get in touch with a contract manufacturer, start by having an in-depth conversation about what you want to accomplish with your product.

The bottom line is if a design detail matters to you, then you should talk to your manufacturer about defining a tolerance for it. One of the biggest reasons tolerances are important in manufacturing is all the valuable information they provide manufacturers to develop a top-quality product. No matter what stage your product is currently at, we can create it and optimize it for manufacturing.

We pride ourselves in being able to solve problems at all levels of small manufacturing: from concept, to design, through product development, and into manufacturing. Category: Blog , Manufacturing. What Is Tolerance? Exactly where the hole has to be placed in X, Y, and Z dimensions—how much variation in placement is allowed for the part to still function properly? Engineers place tolerance on dimensions to allow variances in an acceptable range in order to make a product function properly.

The amount of tolerance depends on the degree of variations in a particular object. Tolerance is the acceptable range for a physical dimension, which is determined by the product designer based on form, fit and function of a part.

Tolerances are pivotal in the manufacturing process because they will determine how well a part will fit in the final piece and how reliable the final product will be. Engineering tolerance is the permissible limit or limits of variation in: a physical dimension; a measured value or physical property of a material, manufactured object, system, or service; in mechanical engineering the space between a bolt and a nut or a hole, etc. They also represent single-feature relationships.

We refer to these intra-feature process planning. Tolerance is being patient, understanding and accepting of anything different.

An example of tolerance is Muslims, Christians and Athiests being friends. Then take the nominal value and multiply it by 1 — tolerance, or The highest possible value is K. The lowest possible value is K. Always read resistors from left to right. While equivalent resistance increases when resistors are joined in series e. And we can get maximum resistance when all the resistors will join in series.

Maximum and minimum resistance is 9 and 1 ohm respectively.