Selection of Ball Screw Lead

Ball screw lead selection: The selection of the lead is related to the required motion speed, system, etc. It is usually selected from: 4, 5, 6, 8, 10, 12, 20, the size is larger, and the lead is generally available Choose larger (mainly consider the bearing tooth thickness). When the speed is satisfied, generally choose a smaller lead (to improve the control accuracy); for the occasions requiring high speed, the lead can exceed 20, and the lead can generally be approximately equal to the nominal diameter for a ground screw (Limited by the spiral angle of grinding), such as 32 (32*32), 40 (40*40), etc., of course, can also be larger (non-grinding, but rarely considered). The larger the lead, the larger the rotation component under the same conditions, the greater the period error and the faster the speed. Therefore, in general high-speed occasions, flexibility is required, and some accuracy requirements are abandoned, and the significance of the clearance requirements becomes smaller (the lead accuracy deviation increases). Therefore, the large-lead screw is generally a single nut.