Here’s an honest review-style summary of the KAK Automatic Door Closer 2 Spring Hydraulic Buffer Adjustable Door Stopper (for doors 25 – 80 kg) based on available product listings and user feedback from marketplaces and review aggregators:
📦 Product Overview
KAK Automatic Door Closer (2 Spring Hydraulic Buffer Adjustable Door Stopper)
This is a hydraulic door closer designed to automatically close doors quietly and prevent slamming. It’s often sold for residential, office, commercial entrances, and supports doors roughly 25 kg to 80 kg depending on the size chosen.
Key specs
- Suitable for doors weighing 25 – 80 kg (choose size based on frame width/weight).
- Two internal springs with hydraulic dampening for controlled closing.
- Material: Aluminum alloy (lightweight, rust-resistant).
- Adjustable closing and latching speeds via screws.
- Available in black or silver finishes.
- Common mounting distance from hinge: ~9 – 10 cm.
👍 What Users Generally Like
✅ Smooth & Silent Closing
Most buyers report the hydraulic buffer provides soft, quiet door closing with minimal noise — much better than a simple spring hinge alone.
✅ Adjustable Closing Speed
You can fine-tune how fast the door closes and how it “latches” in the final degrees — helpful for preventing slam noise or doors that close too slowly.
✅ Works on a Range of Door Weights
The adjustable design and different size options make it suitable for light to medium doors (25 – 80 kg), covering most residential entry and interior doors.
✅ Good Value for Price
According to seller review aggregators, the product tends to have a high overall rating (~90 %) from customers on marketplaces like AliExpress when the seller is reputable.
👎 Common Complaints or Limitations
⚠️ Mixed Build & Adjustment Feedback
Some buyers mention issues with packaging or missing screws, and a few note that the adjustment mechanism can be tricky to dial in perfectly if you’re not familiar with hydraulic closers.
⚠️ Durability Varies
Because this type of closer is often unbranded or produced to a “budget” specification, long-term durability and smoothness over many years can vary depending on the batch/seller quality.
⚠️ No Local Warranty in Many Regions
If shipping from overseas (e.g., China or EU marketplace), local warranty or support may not be available, so replacements depend on the seller rather than local stores.
⚠️ Installation Skill Required
Installation is straightforward for experienced DIYers, but if you’re unfamiliar with door hardware, you might find the setup and adjustment screws somewhat confusing without clear instructions.
🧰 Installation & Tuning Tips
- Set speed before installation if possible — adjusting on a sealed door can be harder.
- Adjust the main closing screw (usually slows overall closing), and the latching screw (controls final catch).
- Mount the closer about 9 – 10 cm from the hinge for balanced performance.
📊 Summary Table
| Feature | Verdict |
|---|---|
| Quiet Operation | ⭐⭐⭐⭐☆ |
| Speed Adjustability | ⭐⭐⭐⭐☆ |
| Ease of Installation | ⭐⭐⭐☆☆ |
| Build Quality | ⭐⭐⭐☆☆ |
| Value for Money | ⭐⭐⭐⭐☆ |
🧠 Bottom Line
The KAK Automatic Door Closer 2 Spring Hydraulic Buffer is a good budget solution for adding smooth, silent automatic closing to doors within 25 – 80 kg. It’s best for homes, offices, and light commercial use, but if you need premium durability or professional commercial standards, consider a higher-end door closer model or branded hardware.