Hettich Sensys 8639i W90 Hinge - TH52 for 90 Degree Face Angle Application; Opening angle 95 Degree_Corner soft close Hinges

The Hettich Sensys 8639i W90 is a specialized angled concealed hinge engineered specifically for blind corner cabinets and 90^\circ face-angle applications in modern modular furniture. Unlike standard hinges that mount parallel to a cabinet side wall, the W90 geometry allows a door to mount flush against a perpendicular panel or blind front.
Equipped with Hettich integrated Silent System, the hydraulic dampening mechanism is housed discreetly within the hinge arm. It catches the door mid-swing and gently pulls it to a whisper-quiet close, functioning reliably across temperature variations.
With a 95^\circ opening angle, the 8639i W90 keeps shutter movement tight and controlled—ideal for L-shaped kitchen corner units or wardrobe blind panels where an extra-wide swing would strike neighboring cabinet doors or handles. Built with nickel-plated steel construction and TH52 cup spacing, it offers clean aesthetics, long service life, and straightforward clip-on installation.

Warranty: Lifetime
Brand Warranty as per manufacturer
Customer must call on manufacturer's customer care number or visit their website to register complaint.
Customer Care Number: 1800 209 2096
Return/Exchange
Damage, Defective, Wrong or expired item, you can request a refund/replacement within 24 Hrs of delivery. A photo and video for claiming the same would be required. Product cannot be returned once opened or used.

1. What does "W90" or "90^\circ Face Angle" mean?
"W90" refers to an angled application where the mounting plate attaches to a carcass wall or blind panel that sits at a 90^\circ angle relative to the door in its closed position. This is most commonly used in blind corner kitchen cabinets where one side of the L-shape extends past a fixed decorative or filler panel.
2. How does the 8639i W90 differ from a standard Sensys 8645i hinge?
* Standard Hinges (e.g., 8645i): Mount to a side wall that runs perpendicular to the cabinet opening (door and side wall form a 90^\circ junction when closed).
* W90 Hinges (8639i W90): Mount to a blind panel that sits parallel/inline to the door opening plane (the mounting surface and door sit face-to-face at 90^\circ relative angles).
3. What does the "TH52" specification stand for?
TH52 indicates that the two cup mounting screw holes are spaced 52 mm apart (center-to-center) around the standard 35 mm cup cutout.
4. Is the soft-close feature adjustable or can it be turned off?
The Silent System soft-close mechanism is built directly into the hinge arm and works automatically. It does not require manual adjustments, but it performs consistently across light and heavy door loads.
5. How many 8639i W90 hinges should be used per door?
Hinge quantities depend on the height and weight of the shutter:
* Up to 900 mm height (under 7 kg): 2 hinges
* 900 mm – 1600 mm height (7–12 kg): 3 hinges
* 1600 mm – 2000 mm height (13–19 kg): 4 hinges
* 2000 mm – 2400 mm height (20+ kg): 5 hinges