这个报价是否包含运输费用？

How to draw a ball screw in Taichung in English: 1. Start by drawing a horizontal line to represent the base or bed of the machine or equipment where the ball screw will be installed. 2. Draw a vertical line at the center of the base line to represent the axis or centerline of the ball screw. 3. Draw a circle at the top of the vertical line to represent the ball nut, which is the component that houses the balls that roll along the screw shaft. 4. Draw a screw thread around the vertical line, starting from the bottom and going up towards the ball nut. The screw thread should be spiraled around the vertical line and should have a constant pitch or distance between each thread. 5. Draw a set of balls inside the ball nut, arranged in a circular pattern and evenly spaced apart. The balls should be in contact with the screw thread and should be able to roll freely along the shaft. 6. Draw two end supports or bearings at each end of the ball screw, which are used to support and guide the screw shaft. The end supports should be cylindrical in shape and should have mounting holes for attaching to the machine frame. 7. Finally, add any additional details or features such as seals, lubrication ports, or covers to complete the drawing.

河南精密滚珠丝杠的使用寿命和性能如何？

40型滚珠丝杠的具体规格和尺寸可能因厂家和生产批次而有所不同，但一般来说，其主要特征如下： - 直径：通常为40毫米左右； - 螺距：通常为10毫米左右，也有其他螺距可选； - 材质：常见的材质有铝合金、不锈钢、碳钢等； - 精度：通常为C7级或C5级，也有更高精度的可选； - 长度：根据使用需求和实际情况，长度可以定制或剪裁。 需要注意的是，滚珠丝杠的型号和规格还与其用途、负载、速度等因素有关，选择时需要根据实际需求进行综合考虑。