Case study · Office pivot door
How a pivot door fails, and why the fix is the pivot — not the door
A pivot door carries its entire weight on one small bearing at the floor. On a heavy large-format glass leaf that bearing is doing serious work every time the door moves, and when it wears the failure is progressive: play in the bush becomes a leaf that drops, a dropped leaf scores its own socket oval, and a scored socket rocks the floor plate until the fixings let go. That whole sequence is visible in the photographs — the circular scoring around the socket in the bottom rail, and the plate that had pulled clear of the carpet. Nothing about the glass, the frame or the top guide was wrong. Replace the bottom pivot and the door is back to new.
The difficulty was that the pivot is not a UK stock pattern. Contractors who work from a van full of standard Dorma, Axim and Adams Rite parts will look at a socket like this, find nothing that fits, and default to “replace the door”. We would rather measure. Socket diameter, plate footprint, fixing centres and rail profile narrow the field quickly, and in this case they pointed to a door system whose hardware is still manufactured in Italy. The pivot we imported is shown held against the rail in the photographs — a bronze-bushed bearing in a machined housing that drops into the existing rail without modification.
Fitting and setting up
With the part in hand the repair itself was straightforward. The leaf was lifted out of its top guide and laid aside, the worn socket removed from the bottom rail and the new pivot housing fitted in its place. A new floor plate went down through the carpet onto fresh fixings in the slab, positioned so the leaf hangs plumb in its frame with even margins to the panelled reveal. The door was re-hung, its swing checked through the full arc, and the closing action set so the glass returns to the frame under its own weight without contact at the floor. The short clips on this page show the finished pivot at the foot of the door and the leaf swinging in the suite.
Work completed
- Diagnosis — bottom pivot bearing worn through; door rail socket scored; floor plate fixings failed.
- Sourcing — pivot measured and matched to the original door system; bespoke replacement ordered from the manufacturer in Italy and imported.
- Repair — new pivot housing fitted to the door rail; new floor plate fixed through the carpet into the slab; leaf re-hung and aligned.
- Commissioning — swing and closing checked through the full arc; door returned to service.
Obsolete and discontinued door hardware — sourced, not written off
This job is on the site because it is the kind of work that rarely gets photographed: no shopfront, no van outside, just a part that took some finding. It is a large part of what Commercial Door Maintenance and Security Ltd does for office buildings — boardroom and meeting-room pivot doors, glass partitions and designer entrances whose hardware was specified once and never stocked here. If you have a door that others have condemned for want of a part, photograph the pivot, the plate and the rail and send it over. We will tell you honestly whether the part can be found and what it will cost, and in our experience it usually can.
