If the posts you've hung your swinging gates on are heavy enough to support the weight of the gates by themselves, then you can avoid using ground wheels all together. If, however, your posts are not sturdy enough, then your gates will require wheels to support them.
Tldr : the wheel is a bad idea. It will always push up on the corner and weaken the structure or damage the hinges; especially those thin hinges on your gate.
Spring Loaded Gate Wheels also known as Gate Casters are extremely easy to mount to any wooden or steel gate. Installing these casters on a gate allows you to open your gate easily and fix sagging gates while enabling you to have an easy opening, longer-lasting, and reliable gate. The mounting holes on each gate cast.
While sliding gates can be an excellent option, they do have some potential drawbacks. First off, they're inherently more dangerous than swing gates. While a swing gate would merely push someone standing in the way, a sliding gate closes against a post and can thus potentially crush someone.
To determine whereabouts to fit the wheels onto the gate, you need to take the gate size including the overhang and divide it by four, then take off another 10-15%. So a 10m gate / 4 = 2.5 then – 10% = 2.25m. The result is the distance from each end of the gate to the centre of the roller.
In Most cases 2 wheels are enough for Sliding gates upto 5M, if you want to add any extra wheels 2 at each end 200-300mm aparts would be better then adding a third wheel in the middle. A middle wheel would take all the weight if there is any rises in the floor track and would shorten the life of that wheel.
A gate bracket prevents the gate from being lifted off its track, as this would allow intruders access to your property. A good gate bracket should prevent gate movement both upwardly and laterally.
One common problem with sliding driveway gates is that they may not close or open completely. The cause of this problem could be a damaged or broken motor, dirt or debris on the gate track or wheels, or misaligned sensors.
Sliding gates are generally more basic in their operation, with fewer moving parts within the opening mechanism when compared to swing gates. This means compared to swing gate, sliding gates have less chance of parts clogging, or breaking down and requiring repair or worse still, replacement.
Instead of sliding along a track, a cantilever gate is supported by rollers that are tucked behind the fencing and remains suspended when opening and closing. Both traditional sliding and cantilever gates can be constructed using a variety of materials, including iron, steel, aluminum, wood, and composite.
The easiest way to reinforce a gate is to attach a diagonal brace or tension rod connecting one of the hinges to the corner opposite. This equalizes the tension between each side of the gate.
If the gate is too heavy, another option is to construct a "support post" that will be installed 2-3 feet away from the main post and will be connected by an iron bar between the two posts, which will serve to give extra support to the main post and avoid the leaning post problem as much as possible.
Honestly, the only reason you might choose a Swivel wheel is if you want the swing of your gate to have a little give, which isn't ideal in the long run.
It Adds Value To Your Home
Driveway gates have a classic curb-appeal that can significantly increase the value of your home if you ever want to sell it.
If your property is close to public property, then it is safer to have the gate open inward so that it does not impede public traffic or open beyond your property border. In these cases, it is likely illegal to install your fence gate this way. The same applies to a driveway gate.
The main disadvantage of sliding driveway gates is that they tend to be more expensive than their rolling counterparts. Because they require a track to be installed, the gate itself needs to be custom-made in order to fit the specific measurements of your driveway.
Generally, sliding gates are more expensive to install and maintain than swing gates. This is because they require a more complex mechanism and have more parts, such as the motor, slide tracks and rollers, all of which can increase the cost.
If space is tight, go for a sliding option, while wide driveways can benefit from double swing gates because these don't need as much clearing to open as a single swing gate. If you don't want to worry about gate maintenance, then a swing gate is probably the best option.
Check the hinges: First, examine the hinges to see if they're rusty or bent or if the screws holding the hinges to the post are loose or missing. Examine the post: You should also look at the post supporting the gate. Sometimes the weight of the gate will cause the post to lean in the soil.
Guide bracket with rollers or slide and guide block
Positioned on the post behind the motor this bracket is to prevent the gate from falling over and guide it left and right. If you have a decent fall over the driveway or you have pailings attached to the gate frame you may need to consider using a slide & guide block.
A wrought iron diagonal brace from the top of the hinged side to the opposite corner will hold it for a long time. Best to put it on both sides so it doesn't twist over time.
To stop burglars from lifting your sliding glass door out of the track, you have the option of mounting the sliding door to the floor. This can be done by simply installing a heavy-duty floor latch that hooks onto the bottom of the door that you can easily attach/detach using your foot.