Both systems lock the swivel mechanism, but they serve opposite purposes: Total Lock is for parking, while Directional Lock is for steering control.

Total Lock: The "Parking Brake"

Total Lock (or Dual Lock) engages a dual-action mechanism that locks both the wheel rotation and the swivel raceway simultaneously.

• Result: The caster is completely immobilized. It cannot roll, and it cannot turn.

• Best For: Situations requiring absolute stability and safety, such as medical workstations, laboratory equipment, or mobile platforms on slight inclines.

• FFIBU Application: China Zhongshan FFIBU Casters Co., Ltd integrates this dual-lock mechanism into FFIBU medical and industrial series to ensure equipment remains rock-solid during sensitive operations.

Directional Lock: The "Steering Assist"

Directional Lock (often called a Swivel Lock) locks only the swivel raceway, keeping the wheel facing forward. The wheel itself remains free to roll.

• Result: The swivel caster behaves like a rigid wheel, rolling in a straight line without "shimmying" or drifting.

• Best For: Moving heavy loads down long, narrow corridors (hospitals, warehouses) where you want straight tracking but still need to turn corners occasionally.

• FFIBU Application: The FFIBU brand offers directional lock options on hospital carts and warehouse trolleys, making them easier to push in straight lines while retaining full maneuverability when unlocked.

Which One Do You Need?

Ask yourself: "Do I need to park it, or push it?"

• Need to Park? Choose Total Lock. If the equipment must stay put while someone leans on it or operates machinery, you need the wheel and swivel both locked.

• Need to Push Straight? Choose Directional Lock. If the cart wobbles in long hallways, this locks the steering for a smooth ride.

For maximum versatility, China Zhongshan FFIBU Casters Co., Ltd can configure FFIBU carts with a mix of both—using directional locks for easy steering and total locks for secure parking.