A guide to levelling feet
From threaded levelling feet and machine feet to adjustable screw feet
Levelling feet are critical for stabilising machinery, pumps, engines and white goods. If these applications are installed on uneven floors, it can result in sliding, vibration, excessive wear, tipping – even serious safety issues for users.
When deciding the levelling feet you need, you should first answer these questions:
- What application are the feet intended for?
- Will the feet be used to support the application? Or raise its height?
- Will the application’s height need adjustment in the future?
This article will answer all of those questions and provide more information such as:
Two types of levelling mounts
Now let’s look at the two types of bases:
1. Tapped hole: This type attaches to a threaded fastener, or bolt. The shaft, or leg, is a separate part and may even be part of the application. If it helps, think of tapped mounts as female in style. You get a lower profile with this type of mount, but you limit the ability to adjust the height.
Best for: heavy-duty machinery with a low profile.
2. Stud: Also known as screw-in levelling feet, this type has a built-in bolt, or threaded stud, which enables easy adjustments and levelling. Where tapped mounts are female, stud mounts are male. You can make very slight adjustments when necessary with this type. These height-adjustable feet are easy to install. The bolt aligns with the application’s threaded shaft.
Best for: electronic racks, machine tools, furniture, small machinery, cabinetry, point-of-purchase displays.
If we can simplify the difference between these two types, tapped levelling feet have an interior-threaded shaft. Stud-levelling feet have an exterior-threaded bolt. Now let’s look at the types of levelling feet available:
Socket mount – adjustable conveyor feet
Socket mount rigid adjustable feet with a plastic base accommodates mounting conveyors or machinery.
Stud mount – appliance levelling feet
Levelling feet with a plastic, rigid base adjusts to uneven floors. Ideal for levelling white goods, machine tools, electronic racks, and other similar applications. The plastic base provides a smooth, non-abrasive surface that protects floors.
Industrial articulated feet – threaded adjustable feet
Heavy-duty stainless-steel levelling feet include a threaded stud made from 304 stainless steel attached to a nylon base, providing a maximum articulation of 30 degrees. Ideal for use in food production industries and catering. Also suitable as heavy-duty adjustable furniture feet.
Non-slip, floor-levelling pads cover the levelling feet on machines or conveyors. They can bear heavy loads while providing extra friction to prevent movement and slipping.
Vibration mounts – heavy duty
Heavy-Duty screw-on anti-vibration mounts made of TPE absorb shock and reduce noise with high adhesion to the floor. These essentially turn feet on machinery and conveyors into vibration absorbing feet.
Materials
Steel and stainless steel are the most common materials used for levelling feet. Plastics are also enormously popular for their ability to leave the floor damage-free. Brass levelling feet are less common, and typically used as furniture levelling feet for their aesthetic appeal. You can learn more about stainless steel in our guide Understanding stainless steel grades.
How to measure levelling feet
Your first concern when choosing levelling feet is that don’t collapse under the weight of your application. To determine the right size levelling feet, you have to think about the application and its weight.
The foot provides stability and support. The shaft’s thread length is important for height adjustment, while the shaft’s thread size helps to support the weight of the application that you’re levelling. You need to take some measurements first.
1. Base diameter: The base must be large enough to support and stabilise the weight of your application. You’ll therefore need the foot’s base diameter. Measure across the bottom of the base as shown here.
2.Thread length: Thread length is important for adjustable levelling feet to enable height adjustment and easy installation. The thread length is the distance between the stud and the bolt, as shown here. Measure the length as shown in this example. the distance between the stud and bolt. The stud is the shaft itself, while the bolt is located where the thread joins the base.
3.Thread size: Thread size will also support the weight of your application. You’ll need to know this to ensure thread compatibility so that the thread matches the type that it will be screwed into. Simply measure the diameter across the thread.
Stud mount levelling feet: load capacity
Below are examples of stud mount levelling feet in both imperial and metric sizes, and their load capacity. Load capacity is critical to ensure your feet can support and level your application.
|
Base diameter (in) |
Thread size (in) |
Maximum feet load capacity |
Base diameter (mm) |
Thread size (mm) |
|
0.984 |
0.984 |
0.8kN |
25 |
25 |
|
0.984 |
1.457 |
1.1kN |
25 |
37 |
|
0.787 |
0.63 |
3.5kN |
20 |
16 |
|
1.732 |
0.787 |
2.1kN |
44 |
20 |
How to calculate static load
You should also know how to calculate static load and to do that, you’ll need to do some division.
1.
Total weight of machine ÷ Number of feet that will support the machine
2.
If the machine has a dynamic load, double the total weight of the structure:
Total weight of machine x 2 ÷ Number of feet
3.
Will the machine have operators? If so, how many? If they’ll be on the structure, add 330 pounds per operator to the load capacity of each mount.
Total Weight of Machine (+ 330 pounds x number of operators) ÷ Number of feet
Download free CADs and try before you buy
Free CADs are available for most solutions, which you can download. You can also request free samples for some solutions to make sure you’ve chosen exactly what you need. If you’re not quite sure which feet for machines, rigid adjustable feet or other levelling solution will work best for your application, our experts are always happy to advise you.
Depending on your application, you might also find these guides helpful:
Quick guide: industrial components for your indoor cabinet
Quick guide: industrial components for consumer appliances
Quick guide: components for medical furniture
Whatever your requirements, you can depend on fast despatch. Request your free samples or download free CADs now.
Questions?
Email us at sales@essentracomponents.co.uk or speak to one of our experts for further information on the ideal solution for your application 0345 528 0474.