Technology / product information

Fast lid movement in appliances or office equipment often causes loud impact noise.
In pressure-lid rice cookers and printer paper trays, this can also lead to damage.
KEM (Thailand) developed a Linear Damper (Compression Type) to control lid movement speed, reduce impact and noise, and ensure safe operation.


🧩 Structure & Features
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‐ Type: Linear Motion, Compression (direct force)
‐ Housing Diameter: Approx. Ø10 mm
‐ Material: Engineering Plastic (POM / PA)
‐ Operating Temperature: -5°C to +70°C
‐ Durability: 40,000+ compression cycles
‐ Mounting: Hinge Joint Mount Type

Operates by hydraulic resistance from silicone oil within a sealed cylinder.
The piston’s motion creates damping that slows lid movement and prevents rebound — even under repeated compression.


🧠 Industrial Applications
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1️⃣ Printers / Copiers:
Installed on paper tray covers or scanner lids to prevent slamming and reduce noise.

2️⃣ Electric Rice Cookers:
Controls the release of pressure lids, preventing sudden pops from steam and ensuring user safety.


💡 Value for OEM Applications
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‐ Reduces lid impact and rebound
‐ Enhances product safety and premium feel
‐ Works in confined spaces
‐ Supports high-temperature operation
‐ Extends product lifespan and quietness


🧪 Quality Control
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Tested for 40,000+ compression cycles and thermal durability (-5°C to +70°C).
✅ Verified by KEM (Thailand) Engineering Team under Katoh Electrical Machinery Co., Ltd. (Japan) QA Standards [1][2].


📍 Case Examples
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‐ Printers / Copiers (paper tray covers, scanner lids)
‐ Electric Rice Cookers (pressure lids)
‐ Enclosures requiring slow, safe opening/closing motion


📞 Contact KEM (Thailand)
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For OEM partners developing damping systems for appliance or office equipment lids,
please contact our engineering team for consultation below.

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📘 Glossary (Key Terms)
‐ Linear Damper: Controls straight-line motion with viscous resistance
‐ Compression Type: Generates damping through internal piston compression
‐ Viscous Fluid: Silicone-based oil providing consistent resistance

📚 Reference
[1] Katoh Electrical Machinery Co., Ltd. (Japan), QA Standard for Motion Control Components.
[2] KEM (Thailand) Engineering Test Report, 2025.

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🗓️ Updated: 2025-11-07