Blum 71B7550 CLIP top BLUMOTION 155° zero-protrusion overlay screw-on hinge – Onyx Black

The Blum 71B7550 is a wide-angle concealed hinge for full-overlay cabinet doors. Its 155° opening angle and zero-protrusion geometry are designed to move a correctly planned door clear of the cabinet opening, helping drawers, pull-out shelves and storage fittings operate without the door obstructing them.

The Onyx Black finish suits dark cabinetry and contemporary furniture interiors. Integrated BLUMOTION provides controlled closing, and the damping function can be deactivated on individual hinges when less resistance is required.

Technical details

• Blum part number: 71B7550
• Hart Wholesale SKU: HIO71B7550
• Type: CLIP top BLUMOTION concealed hinge
• Application: full overlay
• Hinge arm: straight
• Opening angle: 155°
• Geometry: zero protrusion when correctly planned
• Closing action: spring closing with integrated, switchable BLUMOTION
• Hinge-cup fixing: screw-on
• Hinge-cup diameter: 35 mm
• Minimum cup depth: 11.7 mm
• Cup screw-hole spacing: 45 mm
• Maximum door thickness: up to 24 mm, subject to application planning
• Side adjustment: approximately ±2 mm
• Depth adjustment: approximately +3/-2 mm
• Height adjustment: through the selected mounting plate
• Material: steel
• Finish: Onyx Black
• Quantity: one hinge
• Mounting plate: supplied separately

Zero-protrusion planning

With an ordinary overlay hinge, the open door can remain partly in front of the cabinet opening. The 71B7550 is designed to move a correctly positioned overlay door clear of the cabinet interior when opened fully.

Zero-protrusion performance depends on door thickness, overlay, cup-boring distance, mounting-plate height and the required clearance. Verify the complete planning dimensions before drilling or replacing an existing hinge.

Screw-on cup fixing

Screw-on describes how the hinge cup is secured to the cabinet door, not how the mounting plate is fixed to the cabinet. The hinge uses a 35 mm cup and two cup-fixing holes on 45 mm centres.

A compatible Blum CLIP mounting plate is required and must be ordered separately. Select the plate height and cabinet fixing method for the required overlay and cabinet construction.

Opening-angle restriction

Compatible restriction clips can reduce the opening angle where nearby walls, handles or adjoining cabinets make the full 155° movement unsuitable. Restriction clips are supplied separately.

For the verified nickel counterpart, see the Blum 71B7550 zero-protrusion overlay hinge. Browse the Blum CLIP top hinge range.

Matching components

The mounting plate, restriction clips and cover caps are supplied separately. This listing is for one hinge.

Frequently Asked Questions

What does zero protrusion mean?

When correctly planned and fully opened, the cabinet door moves clear of the internal cabinet opening, providing clearance for drawers, pull-out shelves and storage baskets.

Is this the 155° or 125° version?

This listing is for the 71B7550 155° hinge. It is different from the 71B7550D model, which has a 125° opening angle.

Is the mounting plate included?

No. This product contains one hinge only. A compatible Blum CLIP mounting plate must be selected and ordered separately.

Does screw-on describe the mounting plate?

No. Screw-on describes how the hinge cup is secured to the door. The separately purchased mounting plate may use a different cabinet-fixing method.

Can BLUMOTION soft close be switched off?

Yes. The integrated BLUMOTION mechanism has a deactivation switch for applications where reduced damping is required.

Can the opening angle be restricted?

Yes. Compatible restriction clips can reduce the opening angle where the full 155° movement is unsuitable. Restriction clips are sold separately.

What drilling is required?

The hinge uses a 35 mm cup with a minimum drilling depth of approximately 11.7 mm and screw-fixing holes on 45 mm centres. Confirm the complete dimensions against the planning information before machining the door.

What door thickness can be used?

Blum specifies this hinge for doors up to 24 mm thick. The permitted thickness and overlay depend on the door-edge profile, cup position, mounting plate and required opening clearance.