Have you ever wondered what the difference was between roller bearings and ball bearings? At first glance they may not seem all that different. However, these seemingly similar style bearings have very different uses. We’re showing you how bearings work, and what the differences are between these engineering gems. How Bearings Work In general, bearings …

What is the difference between a ball bearing and a roller bearing? Read More »

What is Alloy Steel Alloy steel is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low alloy steels and high alloy steels. The difference between the two is disputed. Smith and Hashemi …

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40Cr steel is a kind of Chinese GB standard alloy steel for engineering and machinery purpose, and one of the most widely used steel grades. For 40Cr material hardness, specifications and equivalent, please see the table below. After quenching and tempering treatment, 40Cr steel has good comprehensive mechanical properties, low temperature impact toughness, low notch sensitivity, …

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Buying hand tools can be a confusing—and at times a losing—proposition. When faced with aisles full of putty knives, hammers, utility knives, and other toolbox must-haves, it’s tough to know if you’re really getting the best product for your money. If you’re like most people, you’ve probably purchased a few tools in the past that …

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