KAK 2-Pack Hydraulic Door Hinge Soft Close 90° Positioning 50KG

KAK 2-Pack Hydraulic Door Hinge with Automatic Soft Closing & 90° Positioning

Upgrade any interior door with the KAK Hydraulic Door Hinge — a sleek, space-aluminum-alloy hinge that combines three essential functions in one compact unit: an automatic soft-closing door closer, a 90° positioning door stopper, and a heavy-duty door hinge. Available in four stylish finishes (Black, Silver, Gold, and Gray), this 2-pack is ideal for residential and light commercial doors weighing up to 50KG per pair.

Key Features

• 3-in-1 Multi-Function Design: Acts as a door hinge, automatic soft-close door closer, and door stopper — all in one invisible, compact unit.
• 90° Positioning: When opened less than 90°, the door closes automatically. When opened between 90° and 160°, the door can be held at any angle — perfect for hands-free convenience.
• Adjustable Closing Speed: Features two adjustable screws so you can fine-tune the hydraulic resistance to suit your specific door weight and usage.
• 50KG Bearing Capacity (Per Pair): The groove-type design provides superior strength to support heavier doors securely.
• Two Installation Options:
  • Groove Type: Requires routing a shallow groove into the door frame for a flush, ultra-strong fit — ideal for heavier doors.
  • No-Groove Type: Mounts directly to the door surface with no cutting required — fast and easy installation.
• Left & Right Compatible: Works for both left-hand and right-hand opening doors.
• Completely Invisible Look: Low-profile, modern design sits flush with the door — perfect for hidden or frameless doors.
• Space Aluminum Alloy Construction: Lightweight yet robust material ensures long-lasting, corrosion-resistant performance.

Specifications

• Brand: KAK
• Model: 2xKAK-YYHY-A
• Pack Quantity: 2 pieces per pack
• Bearing Weight: Up to 50KG (for 2 hinges)
• Material: Space Aluminum Alloy
• Available Colors: Black / Silver / Gold / Gray
• Country of Origin: Made in Mainland China

What's in the Box

• 2 × Hydraulic Door Hinges (color-matched)
• Matching color screws
• 1 × Allen wrench

Installation Guide

Select the right number of hinges for your door weight:

• Doors up to 50KG: Use 2 hydraulic hinges
• Doors up to 80KG: Use 3 hydraulic hinges
• Doors up to 100KG: Use 4 hydraulic hinges

Note: Size measurements may vary by 1–3mm due to manufacturing tolerances.

For general home improvement safety tips when installing door hardware, refer to the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: How does the KAK hydraulic door hinge automatically close the door?

A: The KAK hydraulic door hinge uses a built-in hydraulic mechanism that applies gentle, controlled resistance. When the door is opened to less than 90°, the hydraulic pressure automatically draws the door back to a fully closed position at an adjustable, smooth speed — preventing slamming.

Q: Can the closing speed of the hydraulic hinge be adjusted?

A: Yes. Each hinge features two adjustment screws that let you increase or decrease the hydraulic resistance, so you can customize the closing speed and force to match your door's weight and your personal preference.

Q: What is the difference between the Groove Type and No-Groove Type installation?

A: The Groove Type requires a shallow channel to be routed into the door or frame, which provides a flush fit and maximum load-bearing strength — best for heavier doors. The No-Groove Type mounts directly onto the door surface without any cutting, making installation faster and simpler, and is well-suited for lighter doors or retrofit applications.

Q: How many KAK hydraulic hinges do I need for my door?

A: As a general guideline: use 2 hinges for doors up to 50KG, 3 hinges for doors up to 80KG, and 4 hinges for doors up to 100KG. This 2-pack is perfect as a starter set for standard interior doors up to 50KG.

Q: Are these hinges suitable for both left-hand and right-hand opening doors?

A: Yes. The KAK hydraulic hinge is fully compatible with both left-hand and right-hand opening doors, making it a versatile solution for any interior door in your home or office.