News & Events

What Is Spindle Bearing Preload and Why Is It Done?

In this helpful guide to spindle bearing preload, Northland Tool & Electronics will answer all the basic questions about your spindle bearing preload calculations. More importantly, we’ll discuss exactly why this is so crucial to the performance and longevity of your spindle. What Is Spindle Bearing Preload? First, let’s define preload. Preload is a predetermined static load that applies to all rolling components evenly. Specifically, bearing preload keeps the rolling elements in constant contact with the races to ensure that the dynamic loads, while in use, are exactly where they need to be to maximize accuracy and spindle life span.

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Radial & Axial Runout Explained

In machining, runout refers to inaccuracies in a tool or piece of equipment that cause it to spin off its ideal axis. Spindle runout occurs when a spindle no longer rotates on its intended axis, which can result in: Inaccurate machine registration Issues with tolerance control Excessive chip load Poor part finishes Insufficient tool life Because of these risks, it’s recommended that you test your spindles for runout regularly and obtain necessary repairs as soon as possible. There are two types of spindle runout: radial and axial. Both can lead to similar issues.

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Ceramic Bearings vs. Steel Bearings: Your Complete Guide

The Importance of Bearings Inside each spindle is a set of ball bearings that must hold very tight tolerances, withstand extreme conditions, and also last for many years. To accomplish all this, there are different types of bearings manufactured for very specific applications. Two variations of ball bearings that inspire a lot of questions are ceramic vs. stainless steel. At Northland Tool & Electronics, we get asked quite often if we can “upgrade” steel bearings to ceramic. Ceramic and steel ball bearings are very similar in design.

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Spindle Parts & Accessories

Replacement parts are often necessary when repairing or rebuilding spindles. At Northland Tool & Electronics, all parts and accessories we order for our customers come from leading industry manufacturers. We can also service parts and accessories related to spindle motors and live tooling. Our team has substantial experience in assessing and addressing spindle part failures in a timely manner. Spindle Parts Repair Capabilities Our team of highly skilled technicians has the ability to repair, rebuild, and acquire necessary parts for hundreds of spindle brands and models on the market.

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Spindle Bearing Types: Roller, Angular, Radial & More

Spindles are the heart of each and every machine tool, from the aerospace industry to automotive and medical equipment manufacturing. They can come in a variety of different sizes and are capable of many different applications. Inside each spindle is a set of bearings that must hold very tight tolerances, withstand extreme conditions, and last for many years. As such, there are different types of bearings manufactured for very specific applications.

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Through-Spindle Coolant: Pros, Cons & How It Works

What is Through-Spindle Coolant? By forcing coolant through the tip of the rotary tool, through-spindle coolant (TSC) can prevent damage to workpieces, reduce cycle time, and extend the life of your tool. Depending on the application, coolant can be water-based, petroleum-based, or an emulsion of oil and water. Though most machine tool manufacturers offer TSC as an option, many machines are equipped with a flood coolant system by default. In a flood coolant system, coolant is sprayed onto a tool and workpiece externally.

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