Engineered for heavy appliances and commercial laundry facilities, this 6-inch rigid caster features a dual-spring suspension system, polyurethane tread on an iron core, and 6203 precision bearings. Rated for 350 kg per caster, it absorbs vibration, protects floors, and ensures stable straight-line movement. Fully customizable in wheel material, temperature range, and load capacity to match your exact specifications.
Dual-Spring Protection for Heavy Equipment.
Our 6-inch Rigid Heavy Duty Caster is purpose-built for environments where large appliances, commercial washing machines, industrial dryers, and laundry processing lines demand both stability and vibration control. The dual-spring steel suspension plate acts as a shock absorber, reducing the impact of uneven floors and protecting sensitive equipment internals from vibration damage.
The polyurethane (PU) tread is bonded to a solid iron core, delivering a non-marking, wear-resistant rolling surface with the structural strength to handle 350 kg per caster. The 6203 deep-groove ball bearings ensure smooth, low-friction rotation under heavy loads. The fixed rigid bracket provides straight-line tracking—essential for towed laundry carts and appliance dollies.
A dust-protective lid shields the spring mechanism from lint, detergent powder, and workshop debris, extending service life in demanding environments. The 5 mm thick galvanized steel bracket and top plate resist rust and deformation, while the 140 × 110 mm mounting plate with 105 × 78 mm bolt hole spacing fits standard industrial equipment.
As a factory-direct manufacturer, we offer full customization: wheel material (PU, rubber, nylon, phenolic), temperature rating (-30 °C to +120 °C options), and load capacity tuning. Whether you need casters for a commercial washing machine, industrial oven, or medical imaging equipment, we can engineer the right solution.

| Feature | Benefit |
|---|---|
| Dual-Spring Steel Suspension | Absorbs shocks from uneven floors, protects appliance internals |
| PU-on-Iron-Core Wheel | Non-marking PU tread + iron core strength = quiet + durable |
| 6203 Precision Bearing | Smooth rolling, low push-pull force under 350 kg load |
| Dust-Protective Lid | Keeps lint, detergent, and debris out of spring mechanism |
| 5 mm Galvanized Steel Bracket | Rust-resistant, maintains rigidity under dynamic loads |
| Rigid Fixed Bracket | Zero sideways drift—perfect for straight-line towing |
| Customizable | Wheel material, temperature range, and load capacity tailored to your needs |
| Factory Direct Pricing | Better margins, faster lead times, OEM/ODM support |
| Parameter | Value |
|---|---|
| Wheel Diameter | 6 inch (150 mm) |
| Wheel Width | 50 mm |
| Overall Height | 202 mm / 222 mm (dual height options) |
| Load Capacity | 350 kg / caster |
| Wheel Material | Polyurethane (PU) Tread + Iron Core |
| Mounting Type | Rigid / Fixed (Non-Swivel) |
| Bearing | 6203 Deep Groove Ball Bearing |
| Suspension | Dual Galvanized Steel Spring Plate |
| Bracket Thickness | 5 mm |
| Top Plate Thickness | 5 mm |
| Top Plate Size | 140 × 110 mm |
| Bolt Hole Spacing | 105 × 78 mm |
| Bolt Hole Diameter | 13 mm |
| Dust Protection | Spring Cover Lid Included |
| Finish | Galvanized / Zinc-Plated Steel |
| Wheel Color | Red (custom colors available) |

We understand that every application is different. As a factory-direct manufacturer, we offer:
| Custom Option | Available Choices |
|---|---|
| Wheel Material | PU (standard), Rubber (softer ride), Nylon (high load), Phenolic (high temp), TPR (quiet) |
| Temperature Range | Standard PU: -20 °C to +80 °C / High-Temp: up to +120 °C / Low-Temp: down to -40 °C |
| Load Capacity | 200 kg – 500 kg per caster (spring rate adjustable) |
| Bracket Finish | Galvanized (standard), Stainless Steel 304, Powder-Coated (color options) |
| Mounting Plate | Custom hole patterns and plate sizes available |
| Bearing Type | 6203 (standard), 6303, tapered roller, or custom |
| Brake Options | Side-pedal brake, total-lock brake, or directional lock |
| Wheel Color | Red, Blue, Black, Gray, White, or custom Pantone matching |