How to Choose the Right Casters for Supermarket Carts？

Selecting supermarket cart wheels requires a comprehensive consideration of application requirements, functional compatibility, and durability. Key considerations include:

1. Identify Core Scenario Requirements
Prioritize the application scenario: For supermarkets primarily located on flat ground, choose standard casters. For frequent use on escalators, specialized elevator casters (small wheel diameter of 3-5cm and high-friction rubber) are essential. For smooth tile floors, polyurethane (PU) or thermoplastic elastomer (TPE) wheels are preferred to reduce noise and slippage. For heavy-duty carts, choose nylon for increased load-bearing capacity.

2. Structure and Functional Compatibility
For the basic configuration, choose a "two swivel wheels + two fixed wheels" combination. The swivel wheels ensure flexible steering, while the fixed wheels ensure stability when traveling straight. The wheel diameter should match the cart's specifications: For standard carts, choose a wheel diameter of 5-8cm to lower the center of gravity and prevent tipping. For large carts, increase the diameter to 10cm for improved maneuverability. Casters with brakes should preferably be pedal-type, with a pedal height of 3-5cm to accommodate a wide range of users. For heavy-duty carts, dual-wheel brakes are recommended for enhanced stability.

3. Material and Durability
The wheel frame and axle should be made of galvanized steel or stainless steel to prevent rust caused by water stains from supermarket cleaning. The wheel body must meet wear resistance standards: PU wheels must have a wear rate of ≤0.02g/1000 cycles, and nylon wheels must be tested for a load of ≥150kg. Anti-entanglement features are essential, with a clearance of ≤3mm between the wheel and the bracket, or a baffle should be installed to prevent debris from being entangled.

4. Safety and Maintenance
Select wheels with rounded edges to prevent scratches. Prefer modular caster designs that allow for individual replacement of brake pads or wheels to reduce maintenance costs. Casters must pass load and fatigue tests (≥50,000 cycles without failure) to ensure compliance with safety standards.