When it comes to vertical pneumatic grinders and other pneumatic tools, most professional metal working, fabricating, foundry & casting facilities only think about the type of grinding wheels they’ll need when selecting their pneumatic tool. But that’s not all. This is only a small fraction of the characteristics needed for the proper grinding of even the toughest alloy steel. Here’s some important information on when to use a vertical grinder vs a horizontal grinder for the job at hand.
The difference between a horizontal grinder and a vertical grinder begins with the way the work piece is held above the chuck. A horizontal grinder has a fixed workpiece directly above the work piece and requires a specific amount of clamping force to make it operate properly. When the force required to move the workpiece into position is much greater than the force needed to keep the work in its place, the chuck will either move off center or flip over and become unsteady, which causes it to bind up and not be able to move further. This can cause work to be missed and/or cause the work to slip off the chuck and potentially cause damage to the machine.
The vertical grinder on the other hand has a movable workpiece that is completely above the chuck and requires no clamping force to operate properly. With the vertical grinder, there is a definite requirement for clamping force because the workpiece must be in proper position in order to be ground. If the workpiece were to be moved without first being secured in its place, the result could be catastrophic. Even worse, with a vertical grinder the risk of serious injury is eliminated since there are no work above the workpiece and no way to fall off the grinding wheels.
The reason for this is that with the vertical grinder the work is held in place by two metal chains and one hydraulic motor. These components are separate and each function independently. The vertical grinder functions by having the chain pulls the grinding spindle while the hydraulic motor turns the crankshaft. To get optimal results from the vertical grinder, the two chains and the spindle need to be aligned so they will work together to grind at an optimum rate. A free-standing vertical grinder is quite heavy and must be supported by structures to prevent it from causing damage. This design makes vertical grinder machines somewhat inconvenient to use in workshops or areas where access to heavy equipment is not available.
Another type of vertical grinder is the angle grinders. Unlike the vertical grinders, which are held in place by chains and have to be supported, the angle grinders are stand alone units and do not need to be attached to another object for use. They are also much lighter than vertical grinders. These types of grinders are useful in that they can be used without needing a machine shop and therefore are good for individuals who want to produce fine jewelry in their own shops. These machines do not require any sort of support and because they do not follow the traditional designs of vertical grinders, these machines are very versatile.
As the names suggest, the level grinders are used to grind small areas. The work piece moves vertically up to the level of the face grinders. To grind large areas, such as a whole necklace, the horizontal grinder is used. This type of grinder is best suited for use with soft wire and can be used to grind small items, such as buttons.