Every warehouse floor manager has seen it — a trolley that drifts sideways, fights to go straight, or binds up on turns. Many purchasers assume the wheels are faulty and switch brands, yet the root cause is rarely the caster itself. More often, the problem lies in how the casters are arranged. Choosing the right mix of swivel and rigid casters is the single most overlooked decision in trolley design, and it directly determines push effort, turning radius, tracking stability, and operator safety.

Drawing on years of R&D and real-world material-handling applications, Mingwei’s engineering team breaks down how swivel and rigid casters actually behave, the four configurations used on most shop floors, and how to match the setup to your trolley type and working conditions.