Concealed Hinge For Wide-Angle Access With Self-Close

This Grass Tiomos concealed hinge is built for full overlay doors on face-frame and frameless cabinets where a 155 degree opening angle is the goal, with a self-closing spring that draws the door shut on release and dowel mounting sized for CNC and production workflows.

Key Features

• 155 degree wide-angle opening swings the door nearly flat to the cabinet side for maximum interior access.
• Self-close spring pulls the door shut automatically over the final degrees of travel.
• Dowel mount presses the cup into pre-bored dowel holes for fast, screw-free door-side installation.
• Full overlay straight arm positions the door to cover nearly the entire cabinet side, leaving a narrow reveal.
• Three-way adjustment dials height, depth, and side independently after the door is hung.
• Fits face-frame and frameless cabinets when paired with the appropriate Grass Tiomos base plate, sold separately.

Where the 155 Degree Opening Earns Its Place

Most concealed hinges stop at 110 degrees, which is enough for everyday access. The 155 degree swing is a different animal: the door travels nearly parallel to the cabinet side, clearing the opening for corner installations, accessible-design requirements, or any job where the contents of the box need to be fully in reach without the door getting in the way. That wide arc also suits appliance garages and pantry cabinets where the door parks out of the workflow rather than jutting into the aisle. The 35mm cup seats in the door bore, and the dowel mount presses the cup directly into pre-bored dowel holes, eliminating cup screws entirely for a clean CNC-ready installation. A matching Grass Tiomos base plate mounts to the cabinet and accepts the snap-on arm. The plate is a separate purchase, matched to your cabinet construction and the position you need.

Tiomos Build and What It Delivers

The hinge is steel in a nickel finish and follows Grass Tiomos geometry throughout: 35mm cup, 45mm boring pattern, and a maximum door thickness of 32mm, which covers standard doors and steps into the upper end of the typical door range. The three-way adjustment range of plus or minus a few millimeters on all three axes is the practical dividend on a wide-angle hinge: getting every door to an even reveal across a run of cabinets depends on fine correction after the door is hung, and the independent cam adjustments handle it without re-drilling. The self-close spring does what it says, pulling the door through the final arc and holding it closed. This is not a soft-close hinge; there is no damper slowing the final contact. For a cushioned, damped close on this same wide-angle geometry, the Tiomos soft-close version is the right call instead.

Who Reaches for This Hinge

Cabinet shops running CNC equipment will recognize the dowel mount immediately: no cup screws to drive, the door drops onto the bored holes, and the line keeps moving. The 155 degree swing makes this a natural pick for accessible-design builds, corner cabinet runs, and pantry or specialty cabinet applications where clearing the opening fully matters to the end user. It fits both face-frame and frameless boxes, so it can carry across a mixed-construction project without switching hinge families. Doors up to 32mm thick are within spec, covering the wide majority of cabinet door stock. For doors beyond that threshold, a thick-door hinge is the correct path.

Common Questions

Full Opening, Clean Install, Fast Line

Specify this hinge when the job calls for a wide-angle door that parks itself out of the way, installs quickly on CNC-bored doors, and closes on its own every time.