Hydraulic Cabinet Hinge Fixed Long Spine Plate F806G

Product Overview

TheF806G hydraulic hinge is the fixed base member of this hinge family built with a long spine plate. Two decisions define it: the hinge arm is screwed directly to the plate rather than clipped onto it, and the plate carries its screw holes on an extended spine so the load of the door is spread over a longer run of cabinet side.

Closing is hydraulic. A sealed damper sits inside the hinge arm and takes over in the last part of the swing, so the door slows, meets the carcase quietly and stops without being pushed shut. The hinge is supplied as one assembled unit, ready to fit, with no separate damper to attach and nothing to adjust on site.

Everything else about this hinge is conventional in the best sense: a concealed 35 mm style cup bore in the door, pressed steel hinge parts, nickel plating for interior furniture use, and a plate with round and slotted holes so the door can be pulled into line after the hinge is screwed down. Buyers choose this hinge when the door is heavy enough to want the extra screw spread, and when the specification does not require the door to be lifted off.

The photographs on this page show the hinge from the front, from the cabinet side, and with the plate face uppermost, so the spine length, the hole pattern and the arm can be compared against your own drilling drawing before samples are ordered.

What A Fixed Base Hinge Means On Site

A fixed hinge is one where the arm and the plate are both screwed down and stay that way. Removing the door means undoing screws, and refitting it means holding the door while screws are started again. That is the whole difference from a clip on hinge, and it is a difference measured in unit price rather than in performance.

For most cabinets that trade is worth making. A base unit door, a closet door on a hinged return, a service cupboard, a bathroom vanity, an office locker or a shop fitting door will spend its working life on the same hinge, never lifted away, and the buyer's budget is better spent on a heavier plate or a firmer damper than on a release mechanism that is never used.

There is a second, less obvious advantage. A screwed joint has no clip interface to wear, rattle or be released by accident. On a door that is used hundreds of times a day in a public or commercial building, many specifiers prefer the simpler hinge for exactly that reason, and accept that taking the door off is a maintenance task rather than a routine one.

The hinge on this page is therefore the default choice in the family: the same hydraulic arm as the detachable versions, mounted on a long spine plate, fixed by screws.

The Long Spine Plate And Why Load Follows It

The spine is the web of metal between the two rows of screw holes in the plate. Lengthen it and two things happen at once, in opposite directions, which is why the choice is made deliberately rather than defaulted.

The first effect is load. A door hanging on a hinge puts shear into the plate screws and a bending moment into the top and bottom fixing. With a longer spine, that moment is reacted over a greater distance, so each screw carries less and each screw bites into board that has not been pre loaded by its neighbour. On a tall wardrobe door, a solid timber panel, or a soft board where screw grip is the limiting factor rather than screw strength, the long spine plate is the version that keeps the hinge in the cabinet and not on the floor.

The second effect is space. A longer plate occupies a longer strip of the cabinet side, and that strip is the same strip that carries shelf pins, drawer runner screws, adjacent hinge lines and the fixing centres of the carcass build. Where the side panel is crowded, the short spine hinge is the better fit, and the family includes it for exactly those jobs.

Read the two plate versions as a load trade against a clearance trade. Nothing else changes: the cup, the boring, the arm and the damper are the same hinge, which is why a project can carry both in one shipment without a second machine setup.

How The Hydraulic Closing Works

Inside the hinge arm is a small sealed damper. It is not engaged through the whole swing; the door turns freely for most of its travel and the damper takes over only as the door approaches the closed position. From that point the hinge, not the door weight, decides how fast the last few degrees are covered.

The practical result is a door that closes without a slam, without bouncing back off the carcase and without the shock load that a free swinging hinge returns into its own screw line thousands of times over the life of a cabinet. On a laminated panel with a fragile bore edge, that reduction in impact is the main reason a damped hinge outlasts an undamped one.

Three working rules matter for anyone fitting or servicing this hinge:

1. Do not oil it. The damper is sealed. Oil or spray lubricant carried into the arm changes the damping, attracts dust and is the most common cause of a soft close hinge that closes weakly or seizes.
2. Do not force it shut. A damper working against a misaligned door is a damper being overloaded. Correct the alignment at the plate screws instead.
3. Expect seasonal change. Damping viscosity is temperature dependent, so the same hinge closes slightly firmer in a cold warehouse than in a warm kitchen. That is behaviour, not failure.

If a hinge stops damping, the arm is replaced. The damper is not a serviceable part and no repair to it is offered or recommended.

Key Features

1. Fixed screwed base — arm and plate both fastened, with no clip interface, which is the lowest cost and lowest maintenance arrangement in the family.
2. Long spine plate — extended screw spread for heavy, tall or soft board doors, reacting the door moment over a longer run of cabinet side.
3. Hydraulic soft close — sealed damper inside the hinge arm controlling the closing arc and stopping the door against the carcase.
4. Concealed cup fixing — the hinge sits inside a bored hole in the door and is invisible when the door is shut.
5. Pressed steel construction — cold rolled steel hinge parts, plated for interior furniture service.
6. Nickel finish — even plating across the arm and plate, matched to standard kitchen hardware tones.
7. Adjustable once fitted — round and slotted plate holes take up door alignment before the screws are finally tightened.
8. Family drilling pattern — the door side of this hinge follows the same boring as the short spine and detachable members of the family.

Technical Reference

Opening angle, cup diameter, cup depth, hole centres, crank offset, screw size, load rating and cycle life are issued on the drawing and test sheet with your quotation. They are deliberately not printed on this page, because the correct value depends on your door and your cabinet and has to be confirmed against both.

Fitting A Fixed Cup Hinge Correctly

Bore the door first. The cup must be at the drawing depth and square to the door face, because the hinge arm is only as well located as the hole it sits in. A shallow bore leaves the hinge proud of the surface and puts permanent preload into the arm; a bore cut on an angle makes the door sit crooked no matter how the plate is set.

Screw the hinge into the cup with the correct screw length for the panel. A screw that is too long will show on the door face or break through a veneer; a screw that is too short will not develop the grip the hinge needs on a door that is opened all day. On soft board or particle board, grip is the limiting factor for the whole hinge line, and this is where the long spine plate earns its place, because its screws enter board that has not already been loaded by the screw above it.

With the door held against the cabinet at the marked height, screw the plate to the cabinet side through the round holes, leaving them just short of fully tight so the plate can still be nudged. Set the reveal by eye and by feel along the full length of the door, tighten, and only then check the closing action of the hinge with the door working freely.

Two habits separate a hinge line that lasts from one that has to be called back. The first is to work from a marking jig or a fixed stop block rather than from eye, so every hinge on every cabinet lands on the same line. The second is to test the swing before the last screw is driven home, because a hydraulic hinge that is being forced sideways by its own cabinet will be blamed on the hinge.

Adjusting The Door After The Hinge Is Fitted

All correction on this hinge happens at the plate, not at the arm and not by bending anything. The plate carries both round and slotted holes for that purpose.

• Side to side — slacken the plate screws and move the hinge along the slot, which moves the door face in or out against the adjacent door.
• Front to back — set by where the plate was fixed on the cabinet side, so it is decided during fitting rather than afterwards.
• Door height — corrected at the door, by reworking the fixing position of the hinge in the cup, not by packing.

Never pack behind a hinge to force a door into line. Packing compresses over the first months of use, the door returns to the original fault, and the hinge is left carrying a load it was never meant to react on its own. If the reveal cannot be corrected inside the adjustment range of the plate, then the bore depth or the plate position is wrong and that is what should be corrected.

On a tall door, check the reveal with the door half open as well as closed. Two hinges can hold an even gap on a closed door and still let a long panel twist under its own weight when it is swung, and that is a hinge count question rather than an alignment question.

Where This Hinge Is Specified

Kitchen base units and tall pantry doors are the core users of this hinge. These doors carry the most weight in any kitchen, they are opened constantly, and they are never removed after installation, which is the exact profile that suits a fixed hinge on a long spine plate rather than a lift off hinge on a short one.

Wardrobes and fitted closets come second. A full height overlay door in a bedroom run is the classic case for the extended screw spread: the moment on the top fixing rises with door height, and solid timber and heavy laminated panels add to it. Where a wardrobe door does need to come off in a narrow stairwell or on a high floor, the detachable member of this family is quoted instead.

Beyond domestic joinery the same hinge appears in hotel and apartment package work, bathroom vanities, office and locker furniture, retail fit out, medical and laboratory casework, and display cabinets. In all of these the buyer is specifying the same three properties: a hinge that closes under control, a plate that grips a demanding board, and a fixed joint with nothing to wear out.

Two environments call for a different hinge instead of this one. Where the furniture sees water, salt air or frequent wash down, a stainless steel hinge should be specified rather than this nickel plated hinge. Where a door must be removed daily by the user, choose the clip on version of the family.

Common Faults On Fixed Hydraulic Hinges

Ordering, OEM And Quality Control

Send the door height, panel material, panel thickness and door count, and we confirm the hinges per door, the screw type and the carton total for this hinge. Mixed shipments are routine: the long spine fixed hinge on the tall doors, the short spine version on the wall units, and the detachable member where a service door has to come off, all cut from the same boring template on the customer's machine.

Brand marking can be stamped on the hinge arm, plating can be matched to your own standard, and packing can be bulk cartons, boxed pairs for a hardware shelf, or carded sets for retail. Damper viscosity is the first parameter changed when a buyer wants a firmer or a gentler close, and it is set at assembly rather than in the field.

Batches are released on swing feel, damper engagement point, plating adhesion and plate squareness, with sample sets cycled on a bench rig drawn from the finished cartons. A pre shipment inspection report is issued against the sample you approved, so the hinge that arrives matches the hinge that was signed off.

Choosing The Right Hinge In This Family

A cabinet package rarely needs one hinge on every door, so buyers of this hinge normally end up comparing three or four members of the family. They share the cup and the boring template, which means a shipment can mix them without a second machine setup, and the only real decisions are the plate joint, the plate spine and the arm.

• This hinge — fixed plate joint, long spine plate, hydraulic: the heavy door that stays on the cabinet.
• Short spine fixed hinge — the same fixed hinge where the cabinet side is crowded with shelf pins and runner screws.
• Detachable long spine hinge — same plate, clip on arm, for doors that must be lifted off by hand.
• Open tail fixed hinge — the fixed variant with an open rear end on the arm, used where the fitting detail calls for it.
• Hinge without damper — free swing version for stores, service cupboards and budget specifications.

Read the hinge choice as three questions. How heavy is the panel and what board is it hung on? That fixes the spine length. Does the door ever have to come off? That fixes the plate joint. Does the door need to close quietly? That fixes whether the hinge carries a damper. Answer those three and the model code selects itself.

Hinge Count Per Door

Quantity is the question our sales team answers most often for a hinge of this type, and it is decided by the door rather than by habit. A hinge carries shear at the plate screws and bending at the edge of the cup bore, and both loads rise with door height and panel weight long before the hinge itself yields.

Two hinges per door suit a standard wall unit door. Three hinges spread the same door weight over a longer run of cabinet side, which is what a tall wardrobe or pantry door needs, and three is also the answer where a soft board panel relies on screw spread rather than screw strength. Adding a fourth hinge does not make a light door close better, and on a hydraulic hinge it works against the damper by putting a second closing resistance into the same swing.

Because this hinge is the long spine member of the family, it is normally the hinge specified when a door is at the upper end of the weight range. Confirm your door height, material and thickness with us and we will state the hinge count for the panel rather than leave it to the fitter on site.

Frequently Asked Questions

Is this hinge detachable? No. The F806G is the fixed member of the family, with the arm screwed to the plate. If the door must lift off without tools, the detachable long spine version is quoted instead.

What is the difference between this hinge and the short spine version? Only the plate. The spine is longer, so the screws spread the door load over a greater distance, which suits heavy, tall or soft board doors. The cup, the arm and the damper are the same hinge.

Can the soft close be switched off on site? No, the damper is inside the hinge arm and works on the closing arc whenever the hinge is fitted. Where free swing is required, the undamped hinge is ordered.

Will the door drop over time? Not if the screws are correct for the board and the plate is fixed to sound material. Door drop is nearly always a fixing failure in the cabinet side rather than a failure of the hinge.

Is this hinge suitable for a wet environment? This hinge is nickel plated steel for interior furniture. For wet rooms, coastal installations or wash down use, specify a stainless steel hinge instead.

Contact And Quotation

Send the door specification, order quantity and destination port for a price, packing list and sample arrangement for the F806G fixed hydraulic hinge with long spine plate. The drawing with cup depth, hole centres and plate dimensions is issued with the quotation, so your machining team can confirm the fit on your own cabinet before production starts.