Wheel size matters more than you might think. It is not only about load capacity, but also about the force needed to push, rolling over floor gaps, and the height of the cart. This article compares 4-inch and 6-inch wheels to make the choice easier.
Comparison Table
| Factor | 4 inch | 6 inch |
|---|---|---|
| Load per wheel | 250 kg | 350 kg |
| Load per set | 1,000 kg | 1,400 kg |
| Gaps / rough floors | Acceptable | Better |
| Push force needed | Higher | Lower |
| Cart height | Lower | Higher |
Choose 4 inch when
- The load is no more than ~1,000 kg per set
- The factory floor is smooth with few gaps
- You need a low cart for easy picking, or space is limited
Choose 6 inch when
- Loads reach 1.4 tonnes per set, or the cart is pushed all day long
- The floor has gaps, edges or is uneven — larger wheels roll over them more smoothly
- You want your staff to use less effort when pushing
Simple rule: the heavier the load and the rougher the floor, the more you should choose the larger wheel (6 inch), because it pushes more easily and lasts longer
Summary
If you are unsure and the work is fairly heavy, choosing 6 inch is the safer option. If the work is light and you need a low cart, 4 inch is good value and more economical.