To suit Centor™ top-hung sliding doors TradeBase lists one part, a 29mm sliding door trolley with an acetal roller — adjustable, steel bodied, and also a replacement for Trak™ rollers. On a top-hung door the trolley does all the work, which is why it is the only part here: the acetal wheel wears, the trolley picks up dust from the track, and the door begins to bind, drop at one end or run unevenly. The 29mm figure is the identifying dimension for the trolley, so pull the old one out of the track and measure it before ordering — top-hung trolleys look alike across systems, but wheel size and body width are what decide fitment. Check that the original is adjustable, since a fixed trolley of the same size gives you no height correction.

Trademark notice: Centor™ is a trademark of its owner. TradeBase Australia is an independent supplier of replacement hardware and is not affiliated with, endorsed by or authorised by the brand owner. Brand and model names appear on this page only to identify the windows and doors our parts are made to fit. Unless a listing states otherwise, the parts shown are aftermarket replacements manufactured to suit — not genuine Centor™ parts.