Bottom Gate Hinge with Base Plate for 40mm Box Section, 120 x 70mm

The foot of a two-part gate hinge for 40mm box section, fixed down to the ground beside the post. A 120 x 70mm base plate with four slotted holes is fixed to a firm, level concrete surface, with a 50 x 50mm block welded on the top that takes a spigot on the underside of a U-shaped saddle. Your gate upright stands in the saddle and is held by two bolts across the cheeks. This hinge is the lower partner of the matching upper hinge for 40mm box section, which holds the head of the same upright. The price shown is for one bottom hinge, with a minimum order of 5, because these are normally bought in numbers for a run of gates or doors.

Why this hinge works

The weight goes straight into the ground. The upright stands in the saddle and the saddle sits on the base, so the leaf is carried on the floor fixing and less of the load is hung off the post.

A stepped spigot in a welded block. A collar and a 12mm spigot with a rounded tip drop into the block on the base plate, so the turning point is low down and simple.

Nothing to weld at the foot. The saddle grips the upright with its own bolts and the base fixes down with four slotted holes, so the leaf can be lifted away if you ever need to re-hang it.

Slots allow for your concrete. The slotted holes give you room to line the base up after the anchors have been drilled, which is often the difference between a square gate and an awkward one.

Where it is used

The foot of two-part hinge sets on 40mm box section gates: yard gates, compound enclosures and bin stores where the base plate can be fixed to a firm concrete slab or pad. The base plate needs a firm, level surface, so it is not a part for soft ground or a loose slab.

Specifications

Choosing the right size

Measure your gate upright across the two faces that sit between the saddle cheeks. This is the smallest bottom hinge. The base plate is 120 x 70mm and 5mm thick, and it has the same plate as the 50mm hinge, so only the saddle differs between those two. Top and bottom hinges must be for the same section; never mix sizes on one leaf.

See the wider range of adjustable gate hinges.

Fitting and care

Set out the leaf first, so that the centre of the block sits where you want the gate to turn, in line under the upper hinge. Drill and fix the base plate through its four slots into sound concrete; anchors are not included, and the plate must sit flat with no rocking. Stand the upright in the saddle and fit the two bolts across the cheeks, checking how they land on your frame before drilling anything. Hang the top of the gate in its upper hinge, check the swing and tighten everything down.

Keep the block clear of grit and standing water, and clean out the socket during routine checks of the gate. Put a little grease on the spigot and check the bolts and anchors for tightness. Touch up scratched plating with a zinc-rich paint.

Frequently asked questions

Ordering and delivery

Order 5 or more online, with Express UK Delivery to your site and same-day dispatch on orders before 2pm, Monday to Friday. For a larger job, call 01744 520 110 or email sales@industrialsuppliesco.co.uk and we will confirm availability and delivery before you order.