The first thing you should realize is that the contents of a storage cabinet shouldn’t stagnate. A storage cabinet is not a place to store junk you no longer use. This is the biggest and most common misuse of cabinets. People end up storing older and sometimes broken belongings they no longer use regularly and these items sit in the cabinets taking up valuable space for years. Every storage cabinet should be emptied at least once per year. Anything that hasn’t been touched in a year should be given to the charity shop.
When you put a substantial amount of weight on a caster system, you should make sure that the wheels can handle the load as well as the overall structure of the dolly. When a caster can’t handle the weight of the item it’s carrying, there is potential for tipping which is a definite safety hazard. Casters come in various materials as well as sizes, with features such as breaking systems, swivel and rigid. Typical 5” caster wheels can be made of Urethane, Thermo rubber and even Steel. If you need a large platform it’s recommended to have wheel brakes, swivel casters on the ends and rigid casters in the middle of your platform cart.
If you have a heavy duty flatbed cart that can handle weight make sure the depth and width are sufficient for the height of the cabinet you’re making mobile else the cabinet will tip. For security purposes making a cabinet mobile can also make that cabinet at a greater risk for theft but by adding some kind of locking mechanism for the wheels or holding bracket you will deter any thieves from rolling your cabinet away.
In order for you to have the best possible configuration that you can have with your cabinets it is best to measure the wall where you would want to install the cabinets. This will ensure that you have the right size of cabinets to be used. You can create a floor plan so that you can design the right layout to be able to use the storage area to its maximum capacity.
If you insist on using storage or file cabinets that you already own and want to convert them to mobile cabinets, try making your caster base out of 12 gauge metal opposed to using an existing dolly that may be too large or small for your particular cabinet. It’s recommended that 1 to 2 inch angle iron would be preferable with solid welded beads throughout the armature to ensure the integrity and strength to handle the cabinet’s weight.