About Youfahardware

We connect millions of buyers and sellers around the world, empowering people & creating economic opportunity for all.

Our Address

General Questions

  • How to custom dual-Pitch compression springs?

    Dual pitch compression springs are also known as double-rate springs, double pitch springs, and progressive rate springs. They have a non-linear force which means it isn’t constant as it is with a regular compression spring. This custom compression spring type has a progressive rate which means that the force increases after a certain amount of travel.

  • What is a constant force spring?

    A constant force spring is a spring for which the force it exerts over its range of motion is a constant, that is, it does not obey Hooke’s law. In reality, “constant-force springs” do not provide a truly constant force and are constructed from materials which do obey Hooke’s law. Generally constant-force springs are constructed as a rolled ribbon of spring steel such that the spring is in a rolled up form when relaxed. As the spring is unrolled, the material coming off the roll (un)bends from the radius of the roll into a straight line between the reel and the load. Because the material tension-stiffness of the straight section is orders of magnitude greater than the bending stiffness of the ribbon, the straight section does not stretch significantly, the restoring force comes primarily from the deformation of the portion of the ribbon near the roll.

  • What are the advantages of wire-forming?

    Wire-forming springs have several advantages. They are versatile, flexible, customizable, cost-effective, durable, and environmentally friendly1. The main advantage of wire-forming springs made from square or rectangular wire shapes is increased rate potential and energy storage2. Shaped wire springs require less space to operate and produce more force over a given distance compared to an equivalent round wire.

  • What are some common types of batteries?

    Battery springs are springs used as contact with dry cell batteries. There are many types of batteries available in the market. Some of the most common types of batteries include Lithium-ion, lead-acid, alkaline, and NiMH batteries.

  • What are the different types of torsion spring materials?

    Torsion springs are typically steel because of the stiffness of the material. Hard drawn steel, music wire, spring steel and stainless steel are most common. Plastic can be considered for light-duty needs. Torsion springs are typically close-wound, but sometimes space is provided between coils (i.e. ‘pitch’) in order to reduce friction in high-energy springs.

  • How corkscrew spiral is made？

    Uncorking a bottle of wine presents a challenge. There is no way to grip the cork, which is completely recessed in the bottle's neck. Furthermore, pulling the cork out requires a force of 25-100 lb (110-450 N), depending on whether the cork is moist or dry (from the bottle being stored on its side or upright, respectively). A corkscrew is an implement designed to mechanically remove the cork. It consists of a handle and a helical or screw-like blade that is commonly called a worm. (A corkscrew without a center post is actually a helix, with all the coils having the same radius; however, it is often called a spiral, even though that term technically means a curve with a constantly changing radius.) Screwing the worm through the center of the cork allows the corkscrew to grip the cork internally. Pulling on the handle draws both the corkscrew and the cork out of the bottle. Some corkscrews employ levers, springs, gears, or other mechanical devices to lessen the amount of force needed to pull out the cork.

  • What is the difference between linchpin and flat spring clips?

    According to , Linchpin is a type of spring clip with a circular ring on top and similar use as R-clips. It is used to prevent sliding of the shaft from the axle or wheel while riding. A linchpin is easily inserted into the hole of the shaft to fix the shaft and wheel alignment. Flat spring clips, on the other hand, lack the distinctive U-shape of regular clips and are used to secure thin components, card and paper.

  • What is a custom vending machine?

    A custom vending machine is a vending machine that is built to meet specific requirements. Vending machine suppliers will gladly build you a custom machine for just about anything you could possibly sell. There are many types of vending machines such as snack vending machines, cold drink vending machines, hot drink vending machines, combo machines, gum ball machines, smart vending machines, bulk vending machines, hot food machines, cold food machines, small vending machines and specialized vending machines.

  • When should springs be increased in a mold?

    The blue rectangular spring is installed next to the ejector return pin, as it has a small inner bore, not suitable to be placed over the pin. A longer spring needs a straight bar installed inside (column pipe location), so as to prevent the spring from deformation. The rectangular-sectioned mold spring (mold spring for short) is mainly applied to stamping dies, metal die casting molds, plastic injection molds, and structurally sophisticated mechanical equipment. When the mold base is long and narrow (the length is about twice the width), the number of springs should be increased by two and installed in the middle of the mold.

  • How many springs does a Pilates Cadillac have?

    Most standard reformers feature a set of four to six springs attached to the carriage that provides tension as the carriage moves. However, a Pilates Cadillac may come with over a dozen tension springs attached to various straps and balancing bars on the trapeze tower.

Request A Quote

    logo