For luggage manufacturers, a broken or noisy wheel is not a minor defect. It can damage brand reputation, increase warranty claims, and trigger negative reviews. When travelers experience caster failure on the road, they often switch brands. Preventing failures from the design and production stage protects your product line and your market image.

Common Problems and Root Causes

1. PU Peel-Off (Tire Separation)

Cause: Poor bonding between the PU tire and the nylon core. Low-grade PU, insufficient surface treatment, or multi-shot molding without reliable adhesion can lead to peeling, especially under heat or repeated impact.

2. Cracked Core (Broken Nylon Hub)

Cause: Low-grade nylon or recycled materials. Under repeated shocks or heavy loads, micro-cracks propagate until the core fails, causing instability and unexpected downtime in the field.

3. Deformation Under Load

Cause: Weak structural design or inadequate injection pressure. Over time, the tread flattens, friction increases, and rolling feels like dragging instead of gliding.

How Enjoying Go Prevents These Failures

Enjoying Go Co., Ltd. applies a patented one-time injection PU caster process that fuses PU and nylon in a single precise molding step. This eliminates tire peel-off and strengthens the wheel while retaining elasticity. Our quality system includes the following steps:

• Precision mold pressure and balanced cooling control
• Core inspection before assembly; sampling on every batch
• Shock testing that simulates real-world drops and impacts