Internal Box Section Sliding Gate Wheel 80mm, 20mm Round Track

An 80mm wheel that sits inside a box section rail, for lighter sliding gates on 20mm round track. This internal wheel keeps the rail close to the track and hides the wheel inside the box section. It is listed at 80mm and given as 78mm on the data sheet, with a 20mm half-round groove for 20mm round bar. Two foot flanges, 136mm long overall with 8mm holes at 110mm centres, bolt up to the underside of the rail, and just 27mm of the wheel shows below the mounting face. The price shown is for one wheel with its bracket, with a minimum order of 6.

Important: This wheel runs on 20mm diameter round bar track only. It will not run on V section track or in a cantilever track. Data sheet sizes are a guide; components can vary slightly.

Why this wheel works

A half round groove on a round bar. The groove cups the top of a 20mm round bar and spreads the load along the contact, which keeps the gate centred as it travels and gives a quieter roll than a flat wheel.

A simple running gear. This line is not listed as double bearing, which keeps the price down for a gate opened by hand a few times a day. Choose a double bearing wheel if the gate is motor driven or in constant use.

Small enough for lighter box section. Only about 51mm of this wheel rises above the mounting face, so it can go into a rail that would not take the 100mm or 140mm internal wheels. It costs you nothing in track clearance, because the rail sits 27mm from the base of the wheel, the same as the 100mm size.

Where it is used

Lighter box section sliding gates on 20mm round bar, including side gates and compound gates where the rail is on the slimmer side and a tidy finish is wanted. Choose a larger wheel for long or heavy gates, because a 78mm wheel rolls less easily over grit. It is not for V section track or cantilever gates.

Specifications

Choosing the right wheel

If the rail is taller and the gate is larger, step up to the internal 140mm wheel, or the 100mm or 120mm box section housing wheels listed elsewhere in our range, which have larger wheels and a different housing. If the gate cannot take a slot in the rail, use the 80mm compact bracket wheel instead: it has the same diameter but bolts under the rail and stands 85mm high. On V section track, take the 100mm internal V wheel.

See all gate wheels and sliding gate track.

Fitting and care

Cut a slot in the underside of the rail, long enough to clear the 136mm foot and wide enough for the 33mm bracket. Check that the section is deep enough to clear about 51mm of wheel above the mounting face. Offer the wheel up from underneath and bolt the two foot flanges to the rail through the holes at 110mm centres. Fixings are not listed as included, so allow your own. Leave no sharp edges on the slot, and paint any bare steel.

Keep the track clear of stones and packed dirt, and check the wheels and fixings at each service. Plating gives light protection only, so touch up scratches and welds with zinc-rich paint. Replace a wheel that has worn or stiffened, and check its partner at the same time.

Frequently asked questions

Ordering and delivery

Order 6 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.