24 tooth comb plate GAA453BM
Table of Contents
24 tooth comb plate GAA453BM
OTIS comb plate | GAA453BM | 24 teeth | xiziotis 506 type
Otis aluminum comb 24 tooth comb plate GAA453BM
XIZIOTIS comb plate (aluminum) 24 teeth
GAA453BM3 left 24 teeth 206mm * 140mm pitch 101.7mm
GAA453BM6 right 23 teeth 198mm * 140mm pitch 101.7mm
GAA453BM1 middle 24 teeth 203mm * 140mm pitch 101.7mm
Ordering the 24 tooth comb
To order the 24 tooth comb, send us a photograph of the existing unit and its nameplate at [email protected]. Please quote the complete code including any revision suffix so that our team can confirm the correct variant, current stock and lead time before you commit.
About the 24 tooth comb
Elevator and escalator installations are built around a relatively small number of serviceable assemblies, but they fail at very different rates. The 24 tooth comb sits in the escalator / moving walk group, and it is replaced on a different service interval from the assemblies around it. In practice the failures we see on 24 tooth comb come down to worn step rollers and chain elongation, cracked skirt panels, glazed handrail drive wheels, and comb plates with broken teeth after a foreign-object stop.
Every 24 tooth comb 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 Where a superseded revision is the only one available, we say so plainly and explain the substitution, so the installing engineer can make an informed decision rather than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 the 24 tooth comb, confirm three things. First, the escalator model, the rise, and whether the unit is a 30 or 35 degree incline, because the step and chain differ between them. Second, a handrail profile that matches the guide rail must be confirmed before ordering, since nominally similar handrails differ in cross-section. 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: step chains and handrail drive chains wear as a set — replacing one without the other usually means a repeat visit within the year. Almost every repeat failure we see on 24 tooth comb traces back to a related component that was left in place, or to an adjustment that was assumed rather than measured.
Escalators are harder on their components than lifts, simply because they run far more hours. A unit in a transport hub may be in motion eighteen hours a day, which means wear items reach their limits on a schedule measured in months rather than years.
The step band is the assembly that defines an escalator maintenance budget. The underlying cause is often step rollers that have flattened and no longer run concentrically.
Handrails age in a way that is easy to overlook. The rubber hardens, the splice becomes visible, and the drive wheel loses grip on a surface that no longer has the friction it was designed for. A slipping handrail is a symptom of the whole drive train, not just of the rail.
An escalator runs far more hours than a lift, and its wear items are consumed accordingly, which is why step chains and handrail drive chains are treated as a set, because replacing one alone usually means a repeat visit within the year.
If you are unsure which variant of the 24 tooth comb 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 escalator / moving walk group, so a planned shutdown can cover several wear items at once.
Related parts and further reading
Because 24 tooth comb is only one item in the escalator / moving walk group, these related pages may help you plan the work:
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.
