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2025-05-26浏览人数：291
Sliding braces are one of the important hardware accessories for casement windows. They not only perform the function of opening and closing the window sash, but also serve as an important component to prevent the sash from falling off. However, as the use time increases, the sliding braces may be corroded by wind, rain, and stress, and may deform and rust. Therefore, they need to be replaced. So, how to replace the sliding braces for broken bridge aluminum doors and windows? Below are the selection and replacement methods for the sliding braces of broken bridge aluminum doors and windows for your reference.
1. The load-bearing requirement for sliding braces is equal to the weight of the window sash (glass weight+window sash profile weight) multiplied by a safety factor of 1.3. According to the "Specification Table for Sliding Aluminum Windows", the series or specifications of load-bearing requirements that sliding supports meet can be obtained.
2. The length specification of the sliding brace is generally 2/3 of the window width, and when the window is light, it can be 1/2. When selecting sliding braces for hanging windows, they are generally 1/2 of the window height.
3. The upper limit of the opening angle of the window sash is related to the selection and installation position of the sliding support series.
4. Aluminum casement windows with sliding braces are used, and the width of the window sash is generally not greater than 750mm.
5. The sliding braces of broken bridge aluminum doors and windows should be made of high-quality 304 stainless steel, in accordance with the JG/T127-2014 "Building Hardware and Sliding Braces" standard.
6. The sliding support of the broken bridge aluminum doors and windows should maintain good performance in all aspects after multiple strict tests of opening and closing.
(1) The sliding support fastening adopts M5 x8 stainless steel countersunk head screws or ST4.2/4.8x 12 stainless steel self tapping pan head screws.
(2) Reasonably use screws or bolts according to the actual situation, and countersunk screws must be used wherever there are countersunk holes; Use pan head screws for sliding grooves or areas without countersunks, and use screws correctly to ensure the firmness and reliability of the sliding support after installation.
(3) The sliding brace must be tightly connected to the window sash and frame, and must not be moved lightly. All screw holes must be screwed with screws or bolts, missing one will affect the load-bearing capacity of the sliding brace during use.
(4) It is recommended that when the thickness of the profile is less than 1.4mm, steel lining should be placed at the bottom of the bridge cut aluminum profile and fixed with pan head screws.
(1) When installing the sliding brace, it should be ensured that the distance between the window frame and the sash is the stacking height of the sliding brace, generally 16.5-17 millimeters. Different series and specifications have different stacking heights, and specific technical parameters can be found in the sliding brace series and actual products.
(2) During installation, it is also important to note that the sliding braces of the broken bridge aluminum doors and windows should be placed as close to the outer edge of the window frame as possible, and the triangular head should be placed on the edge of the frame. At the same time, it is necessary to ensure that the upper and lower window braces are on the same vertical plane.
(3) The bottom groove of the sliding support should avoid falling hard debris such as cement, lime, acidic and alkaline corrosion, and too much dust, otherwise it will cause the window to open and close smoothly. At the same time, lubricating oil should be regularly added to the sliding support.
