PRODUCT DESCRIPTION
Blum 71B3780 CLIP top BLUMOTION 110° Inset Knock-In Hinge
The Blum 71B3780 is a nickel-plated, sprung concealed hinge for an inset cabinet door that closes within the cabinet opening. Its fully cranked arm provides the geometry for a correctly planned inset installation. Integrated, switchable BLUMOTION slows the door as it closes.
This version has a 35 mm steel cup with pre-mounted knock-in dowels. It is pressed into an accurately drilled three-hole door pattern using suitable insertion equipment, making it useful for prepared workshop installations. Once fitted, the hinge arm connects to a compatible cabinet-side Blum CLIP mounting plate without tools, so the door can be removed without disturbing the cup. The plate and cabinet fixings are sold separately.
Features and fitting details
- Blum article 71B3780; Hart SKU HI71B3780.
- Inset application, fully cranked arm and 110° opening.
- Sprung self-closing action with integrated BLUMOTION, which can be deactivated on an individual hinge.
- 35 mm cup, 13 mm cup drilling depth and two pre-mounted dowels for 8 mm holes on 45 mm centres.
- Cup drilling distance 3–7 mm; side adjustment ±2 mm and depth adjustment +3/−2 mm with a compatible plate.
- Nickel-plated steel; one hinge with cup dowels supplied, mounting plate not included.
Knock-in does not mean hammering a hinge into a plain screw-on cup bore: prepare all three holes and use controlled insertion to avoid damage. Plan the mounting-plate position for the door thickness, cup drilling distance and surrounding gaps, and trial-fit before drilling a full set of doors. Compare the 71B3750 screw-on or 71B3790 INSERTA inset versions if a different cup-fixing method is needed; their preparation differs. Browse compatible Blum CLIP mounting plates and the CLIP top hinge range.
Frequently Asked Questions
Does 71B3780 include soft close?
Yes. BLUMOTION is integrated into the hinge and can be deactivated on individual hinges.
What does knock-in mean?
Pre-mounted cup dowels are pressed into two correctly drilled holes alongside the 35 mm cup bore using suitable insertion equipment.
Is this a tool-free cup fitting?
No. Drill and insert the knock-in cup with suitable equipment. The CLIP connection to the mounting plate allows tool-free door removal after fitting.
Are the dowels and mounting plate included?
The cup dowels are pre-mounted on the hinge. The cabinet-side mounting plate is purchased separately.
How does it differ from 71B3790?
Both are inset BLUMOTION hinges, but 71B3780 uses pre-mounted knock-in dowels while 71B3790 uses INSERTA tool-free cup fixing.
How many hinges are supplied?
One hinge is supplied.
TECHNICAL DETAILS
- Application: Inset
- Colour: Nickel
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