Blum Compact 31C Soft-Close BLUMOTION 1-5/16" Overlay Face-Frame Hinges Nickel, 110° Screw-On - 31C355B21

Blum Compact 31C Hinge For 1-5/16 Overlay

Blum Compact 31C hinge describes a Blum, Inc. concealed cabinet hinge designed for face-frame applications, so cabinet doors sit cleanly over the frame for a finished look on kitchen or shop projects. The 1-5/16 inch overlay detail sets the door position on the frame, which helps installers line up multiple doors in a run with consistent reveals. This hinge is in the concealed face frame hinge category, so the hardware stays out of sight when the door is closed, helping projects look clean while still allowing full function. The hinge offers a 107 degree opening angle, giving doors a wide swing that supports good interior access without moving into an extreme opening range. A nickel finish identifies the visual appearance, which helps installers match this hinge with other nickel-finished hardware in a layout.

Key Working Details Of This Compact Hinge

• BLUMOTION integrated into the hinge cup provides soft-close action at the hinge itself, which helps doors close more gently and can reduce slamming impact on the face frame over repeated use.
• Utilizes Blum's CLIP technology, which allows the hinge to attach and remove from its mounting interface using the CLIP feature, helping installers adjust or service doors without disturbing the basic screw-on positions.
• The deactivation switch for small or light doors lets the user switch off BLUMOTION on that hinge, which helps balance closing speed when a door has very low weight or fewer hinges supporting it.
• An overload safety feature built into the hinge protects the BLUMOTION mechanism when a door is forced closed hard, which supports long-term function on doors that see frequent or rough operation in busy environments.
• Three dimensional cam adjustment gives vertical, horizontal, and depth tuning at the hinge, which allows precise door alignment on face-frame cabinets without relocating screw holes during installation or later adjustments.
• The 1/2 inch cup depth sets the bore depth in the door, which helps installers plan drilling operations and choose door thicknesses that suit this concealed hinge style.

Screw-On Face-Frame Mounting And Adjustment

This compact hinge is identified as screw-on, so the hinge mounts to the cabinet and door using screws through its plates, giving installers a familiar fastening method on face-frame work. Because the product uses three dimensional cam adjustment, fine-tuning door gaps can be done at the hinge after the screw-on positions are set, which can speed up installation on multi-door banks. The 1-5/16 inch overlay value ties directly to how far the door covers the frame, so layout work can be based on that figure for consistent spacing. A 1/2 inch cup depth also defines the boring setup on the door, which supports repeatable machining for production or multi-door jobs.

How This BLUMOTION Hinge Fits Real Projects

Where This Concealed Face Frame Hinge Works

This hinge is part of the concealed face frame hinges class, so it is suited to cabinet designs built with face frames where a concealed hinge is preferred over exposed hardware. The 1-5/16 inch overlay specification aligns with layouts that call for that overlay size over the frame, which matters when doors sit close together in banks and need reliable spacing. A 107 degree opening angle lets the door open wide enough for normal cabinet access, which suits typical kitchen, bath, or shop cabinet ranges that do not need a wider specialty opening. Because BLUMOTION is integrated into the hinge cup, soft-close performance is contained at the hinge location, which keeps the damping function aligned directly with the door movement on these installations.

Why These Adjustment And Safety Details Matter

The three dimensional cam adjustment feature allows door position changes in height, side offset, and depth from the frame, which helps installers correct reveals and flushness without changing the original screw-on mounting points. This adjustment capability becomes valuable on face-frame runs where slight frame or door variations would otherwise require re-drilling. The deactivation switch for small or light doors gives control over BLUMOTION on each hinge, which supports consistent closing behavior across a cabinet line that might mix larger and lighter doors. BLUMOTION integrated into the hinge cup slows the final closing travel, which can reduce noise and impact on the face frame, helping the cabinet structure experience less closing shock during daily use. The overload safety feature in the hinge protects the BLUMOTION system when doors are pushed shut with extra force, which supports hinge performance over time in high-traffic spaces. With a defined 1/2 inch cup depth, boring equipment can be set once and repeated across many doors, which helps maintain consistency and reduce rework on production or multi-room installs.

Common Questions About This Blum Compact Hinge

Selecting This Hinge For Your Next Cabinet Run

The Blum Compact 31C hinge with BLUMOTION, 1-5/16 inch overlay, and 107 degree screw-on design combines concealed mounting with soft-close action, which suits face-frame cabinet projects. With a 1/2 inch cup depth and three dimensional cam adjustment, this concealed face frame hinge supports repeatable boring setups and precise door alignment on both small batches and larger runs.