Parallel slitted housings are usually made of a single piece of metal. Aluminum is often used, and spiral slitting is used to accommodate deflection and torque transfer. They usually have good functionality and have a price advantage, and in many practical applications, it is the product of choice. The single piece of original data is designed to complete the torque transfer without backlash and the maintenance-free advantages. There are two fundamental series here: single-slit and multi-slit.
The single-slot type has a long multi-ring long slit, which gives the bearing housing a good elasticity and a small bearing load. It can accept all kinds of deflections, and is most suitable for handling angular displacement and axial displacement, but the parallel bias has a weaker receiving force. Because the single slit is bent together in two different directions, a large external pressure will occur. This incurs premature damage to the parts. Although the long single-sleeve housing can be easily bent under the biased condition, the rigidity of the bearing housing has the same effect under the torsional load. Excessive turning clearance under torsional loads can affect the accuracy of the housing and weaken its overall function. Single-slot housings are an economical choice and are best suited for low torque applications, especially in articulated encoders and other lighter instruments.
Multi-slit housings typically have 2-3 slits to create a low torque rigid Issue. The multi-slit type allows the slit to be shortened without impairing the biasing ability. The short slit increases and overlaps the torque rigidity of the bearing housing to allow it to accept a very large torque. This function makes it suitable for light load applications, such as the connection of servo motors and lead screws. This function does not have any negative effects: as the size of the slit increases beyond the single-slot type, the bearing load will increase, but in a few cases, the bearing can be sufficiently useful to maintain. A few manufacturers have extended the concept of multi-cutting to another level. In addition to a set of multiple slits, two sets of multiple slits are also used together. Multiple sets of multiple slits make the housing more flexible and biased. The increase in size means the ability to accept parallel deflection. Compared to single slits and single-sleeve multi-slit housings, multiple sets of multi-slit housings can be bent together in different directions in parallel deflections. Comply with this bias. Today, a large number of this series of housings are made of aluminum, but there are also a few manufacturers that supply stainless steel for design. In addition to corrosion resistance, stainless steel housings also increase torque acceptance and stiffness, sometimes reaching twice the equivalent of aluminum. But this increased torque and stiffness is also offset by increased mass and inertia. Many time negative effects will also surpass their strengths, so users have to find other ways of bearing housing. In the use of small motors, a large percentage of the motor torque is used to restrain the inertia of the housing, which will severely impair the overall function of the piece.
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