It's not too far to say the brakes on your equipment are as critical as the brakes on your car. There are three main reasons why —
Holding strength — Not all floors are even as we'd like, if they are, they dont really stay even without maintenance. Having brakes on your castor wheel ensures that the equipment doesn't just roll away from a spot regardless of unseen external forces.
Handling heavier capacities — Having brakes ensures there stopping a loaded cart doesn't depend on the operator's strength to stop the equipment. This ensures the safety of the load & its environment from human errors or limitations.
Reducing operator strain — By pressing the brakes instead of using the entire body to stop the equipment, the operator's life is more easier & efficient.