Mitsubishi Escalator Comb Plate YS017B313

YS017B313 is commonly used in Mitsubishi escalator entrance safety sections.

This comb plate is usually installed at the escalator landing area where passengers enter or leave the escalator.

According to maintenance market information, this model is commonly seen in both yellow and black versions with 14-tooth structures.

Common Maintenance Situation

In shopping centers and subway projects in Malaysia and Chile, comb plate damage is one of the more common escalator maintenance situations after long-term operation.

Typical field problems may include:

• broken comb teeth
• step impact noise
• abnormal vibration near landing area
• comb safety switch triggering
• visible tooth wear after heavy traffic use

During maintenance work, technicians often inspect both the comb plate and comb switch assembly together.

Why Comb Teeth Matter

The comb teeth are designed to mesh with escalator steps during operation.

If the comb gap or tooth alignment becomes abnormal, passengers may notice:

• stronger vibration at entry area
• unusual noise during step transition
• unstable step-to-comb contact

Because of this, damaged comb sections are usually replaced quickly in commercial projects with high passenger flow.

Some Mitsubishi comb plate versions use aluminum alloy structures, while others use reinforced plastic configurations depending on escalator generation.

Practical Service Notes

In some older escalators, maintenance companies replace the comb plate together with:

• comb fixing bolts
• yellow warning markings
• impact safety switches
• landing plate covers

This helps improve landing area safety and appearance during refurbishment work.

FAQ

Why do escalator comb teeth break?

Heavy passenger traffic, foreign object impact, and long-term mechanical wear may gradually damage the comb structure.

Can damaged comb plates affect escalator safety?

Yes. Broken comb teeth may increase impact risk and can trigger the comb safety protection system during operation.

Installation Attention

Before replacement:

• tooth quantity should match original specification
• comb width must correspond to step structure
• fixing hole distance should be checked carefully

Some Mitsubishi escalators use different comb plate dimensions even with similar external appearance.