Elevator door lock roller
Table of Contents
Elevator door lock roller KM35939G01
The KONE AMDL series croquet 31mm*16mm*20mm
Elevator door lock roller KM35939G01
WITTUR CN0454 AMDL series croquet
Ordering elevator door lock
To order elevator door lock, send the exact model or reference code printed on the original component to [email protected]. Please quote the complete code including any suffix so that our team can confirm the correct variant, current stock and lead time before you commit.
About the elevator door lock
Elevator and escalator installations are built around a relatively small number of serviceable assemblies, but they fail at very different rates. The elevator door lock sits in the door system group, and it is replaced on a different service interval from the assemblies around it. In practice the failures we see on elevator door lock come down to worn door rollers and hanger bearings, stretched operator belts, misaligned door vanes, and light curtain optics that fog up in humid plant rooms.
Every elevator door lock we supply is inspected before dispatch. Each unit is checked for physical damage, correct marking and the specific wear or degradation patterns that matter for this class of component, then packed to survive international transit. Where a superseded revision is the only one available, we say so plainly and explain the substitution, so the installing engineer can make an informed decision rather than discovering the difference on site.
Buying guidance and compatibility notes
Before ordering elevator door lock, confirm three things. First, the door operator model, the door width and the number of panels, since a two-panel centre-opening door takes different hardware from a side-opening one. Second, door operators are commonly reused across a product family, so a vane or roller that fits one lift will usually fit its neighbours. Third, whether the installation is a traction lift or an escalator, since duty cycle and loading differ between the two.
On fitting, one point is worth repeating: re-level the track before fitting new rollers, otherwise the new bearings will wear out at the same rate as the old ones. Almost every repeat failure we see on elevator door lock traces back to a related component that was left in place, or to an adjustment that was assumed rather than measured.
Light curtains and photocells are the parts most often blamed unfairly. If the optics are clean and aligned, the fault is usually in the wiring or the operator, not the sensor — though a sensor that has been in service for a decade is worth replacing as a matter of course.
The door is the part of a lift that passengers judge the whole installation by. The underlying cause is often accumulated grit in the sill channel that changes the closing force.
On heavier doors the operator belt is a wear item with a predictable life. Keeping a spare on site is cheaper than a call-out, because a stretched belt can be swapped in under an hour once the door is isolated and the track is clean.
If you are unsure which variant of the elevator door lock you need, send a photograph of the nameplate and the existing component alongside a description of the fault. That is usually enough for our team to identify the correct replacement without a site visit, and it avoids the cost and delay of returning an incompatible part. We are also happy to advise on the other serviceable items in the same door system group, so a planned shutdown can cover several wear items at once.
Related parts and further reading
Because elevator door lock is only one item in the door system group, these related pages may help you plan the work:
- Door operator controllers
- Door Vane
- Elevator Door Guide Shoe
- Elevator Door Hanger Roller
- Elevator Door Operator Belt
Reference sources
The compatibility information on this page was cross-checked against the following authoritative references. Always confirm the exact reference against your own equipment nameplate.
