Self-Closing Sprung Gate Hinge Set for Round Tube, Galvanised Spring Barrel, Adjustable

A complete self-closing hinge set for gates made from round tube. A galvanised central spring barrel sits between plates that seat against the tube, with a slotted pin plate, a pin hole plate and a plain plate supplied for welding to the tubes. The closing force comes from a spring in the barrel, and it can be set to either direction of swing with a half turn of the bolt. The set has a maximum 180 degree range and adjustable closing speed. One spring is rated for 10kg, and heavier gates should use more than one spring. Do not over-tension the spring, as this will damage it. The price shown is for one complete set.

Why this set works

It is a mechanical answer to a simple problem. A spring in a barrel pulls the gate shut with no hydraulic oil to worry about and very little to go wrong. It suits a small tube gate that just needs to come back to the closed position.

One part, two directions. Set the gate in its closed position, then turn the bolt half a turn clockwise or anti-clockwise to choose the direction it will spring back. You do not need to order a left or right hand version.

The plates seat against the tube for welding. The curved ends of the plates are shaped to sit against round tube, which gives a good joint for the weld.

The spring and pin are the only working parts, and the central barrel is galvanised for outdoor use.

Where it is used

Self-closing gates on tube handrails and walkways, machinery guards, small access gates on mezzanines and platforms, and light pedestrian gates made from round tube. It is a good fit where the gate is small and the handrail system is already in round tube.

Specifications

Choosing the right set

Check two things before you order. First the gate weight, because one spring is rated for 10kg and heavier gates need more than one. Second your tube, because a tube diameter is not published for this set. If you are working in 33.7mm, 42.4mm or 48.3mm tube, our pre-welded hinge sets are made for those exact sizes. For a gate built from square section, use the set made for square section. If you are not sure which will fit, call us with the tube size and we will check.

Fitting and care

This is a weld-on set. Weld the plates to the post and gate tubes in line with each other, allow them to cool, then assemble the barrel, spring and pin with the screws and washers supplied, following the assembly details included with the set. With the gate held in its closed position, turn the bolt half a turn in the direction that matches the swing you want. Open and release the gate to check it closes, and adjust only as far as you need. Over-tensioning will damage the spring, so stop as soon as the gate returns reliably. Heavier gates need additional springs rather than more tension.

Check the screws and the bolt at routine inspections. Keep the barrel clean and apply a little light oil to the pin if the movement becomes stiff.

Frequently asked questions

Ordering and delivery

Order 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.