How do you calculate the distance from the center of the first mounting hole to the end face of an FDA-series rail?
👤 nuoyan · 📅 2025-09-05 15:06 · 👁 380 · 💬 1
How do you calculate the distance from the center of the first mounting hole to the end face of an FDA-series rail?
💬 1 replies
👤 ams17306304033 · 2025-09-05 15:13
The method for determining the mounting hole positions is as follows: For example, if the distance between holes on an FDA15 rail is 60mm and the total length of the rail is 220 mm, the calculation is: 220 ÷ 60=3.66666667. This means the rail can be divided into three equal segments, with the remainder representing the combined end distances of the rail. 220-60 × 3=40. Therefore, the total end distance at both ends of the rail is 40. If the end distances are equally divided, they would each be 20, resulting in a 20/20 split. Other possible splits include 10/30, 11/29, 12/28, 13/27, and so on—any combination where the sum equals 40 is acceptable. It should be noted that when the single-side hole spacing is less than 10 mm, one hole shall be omitted to prevent hole bulging. Generally, the end distance of an I-beam rail is determined by the equal-bisection method, which involves dividing the remaining length by two. The value obtained is the end-to-end distance of the rail. If you have any special requirements, be sure to note them for the sales representative when placing your order.
