I have a project to replace sliding mechanism in my 1996 built house. There is a plastic pivot bracket, or shoe, that holds steel piece of the window bottom. It also holds twisted spring that is embedded in metal tube and slides in it up and down. Some of the pivot shoes broke and some of the twisted bands moved out as well. At first I want to identify pivot bracket. Next all parts of the mechanism. Opening in window frame is 17 mm wide and inside it looks like around 35 mm wide. It is 15 mm deep on the inside. Dimensions look more like metric than imperial.
I have 15 windows that may need fixing.
Possibly there are more compact and modern mechanisms that would fit in my 35x15 mm space. I saw one pivot slider from Pella that did not have any spring , just slider that holds window in position as well.
![IMG_1209](images/pictures/2023/07/673367.jpg)
![IMG_1206](images/pictures/2023/07/673369.jpg)
![IMG_1212](images/pictures/2023/07/673371.jpg)
![IMG_1213](images/pictures/2023/07/673372.jpg)
![IMG_1214](images/pictures/2023/07/673373.jpg)