The weight of the threaded screw must first know the material density of the screw, and the weight is obtained by multiplying the density by the volume. As for the volume, the measurement by the drainage method is not accurate, and the measurement of the trapezoidal thread is required.

The cross-sectional area, and the total length of the thread alveolar. The cross-sectional area multiplied by the total length of the alveolar is equal to the volume of the bar that is cut when the screw is made, and the volume of the bar is subtracted from the volume of the cut.

Equal to the screw volume, and then the volume is multiplied by the density to get the component. The decision to use conditions is based on the component of the moving object, feed speed, operation mode, screw shaft speed, stroke, and installation

Direction (horizontal or vertical), life time, positioning accuracy. 2. Pre-select the specifications and application conditions of the ball screw, pre-select the accuracy grade of the ball screw (C3~C10), screw shaft diameter, screw

Distance, full length. Acknowledge fundamental safety ① Allowable axial load Acknowledge that the axial load is within the allowable axial load value range of the screw shaft. ②The allowable speed recognizes that the speed of the screw shaft is within its capacity

Within the range of allowable speed value. ③The life time is calculated for the life time of the screw shaft, and it is recognized that the required life time can be guaranteed. Can choose to damage the Manlu screw. Excellent quality four, based on performance

Request for discussion If you want to improve the precision of fine positioning and the response of control, the following approval is required. ①Rigidity of the screw shaft ②Change of life due to temperature.