− | *The deflection at the center of the slide rail is calculated using a simply end supported beam as a model with beam deflection equations only considering the weight of the bar. | + | *The deflection at the center of the slide rail is calculated using a simply end supported beam as a model with beam deflection equations considering the weight of the bar and the weight of the cart. The maximum deflection was calculated as not exceeding 6um, well within the limit for our usage. |