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The Waterproof Thread Stem Medium Duty Industrial Caster Wheels (3", 4", 5") with PVC Bearings is a corrosion-resistant solution for industrial environments where exposure to chemicals, moisture, or harsh cleaners is common. Designed for medium-duty use (110–140KGS), this caster features PVC bearings—known for their excellent chemical resistance—and a waterproof thread stem, making it a top choice for laboratories, chemical storage facilities, and food processing plants. Its 3”, 4”, and 5” wheel sizes adapt to carts, racks, and medical equipment, ensuring stable, consistent mobility even in corrosive conditions.
Every component is selected for durability and chemical tolerance, with a focus on PVC’s unique strengths:
Wheel Body Materials: Constructed from PP, PU, TPR, or PVC, the wheel body resists acids, alkalis, and industrial solvents (e.g., cleaning agents, dilute chemicals). PP and PVC options meet hygiene standards, making them safe for food or medical applications.
PVC Bearing Structure: PVC bearings are non-reactive to most common chemicals, avoiding corrosion that damages steel or PU bearings. The double-bearing design (with a sealed housing) prevents liquid or dust ingress, ensuring smooth rolling even after exposure to spills.
Dimensional Specifications:
Wheel diameter: 75mm (3”), 100mm (4”), 125mm (5”)
Tread width: 32mm (all sizes)
Load height: 105mm (3”), 130mm (4”), 158mm (5”)
Mounting plate: 9666mm or 7545mm; hole size: 8.5mm (compatible with standard industrial fasteners)
| Wheel Material | Wheel Dia | Tread Width | Load Height | Plate Size | Plate Size | Hole Size | Load Capacity |
| TPR/PU/PVC/PP | 75 (3") | 32 | 105 | 96*66 | 75*45 | 8.5 | 110 |
| 100 (4") | 32 | 130 | 96*66 | 75*45 | 8.5 | 125 | |
| 125 (5") | 32 | 158 | 96*66 | 75*45 | 8.5 | 140 |
Superior Chemical Resistance: PVC bearings and wheel materials stand up to acids (e.g., vinegar, dilute hydrochloric acid), alkalis (e.g., ammonia), and solvents—critical for laboratories or chemical warehouses.
Waterproof & Rust-Free: The entire structure (thread stem + sealed bearings) repels moisture, preventing rust or degradation in damp areas like commercial kitchens or refrigerated storage.
Efficient Load Handling: Supports 110–140KGS, with a double-track swivel design for stable rotation—ideal for moving heavy reagent carts (laboratories) or oily component racks (automotive manufacturing).
Quiet & Low-Friction: PVC bearings reduce rolling resistance, enabling easy steering for staff, while minimizing noise to comply with medical or office-adjacent industrial spaces.
What types of chemicals can the PVC bearings resist?
PVC bearings are non-reactive to most household and industrial chemicals, including dilute acids, alkalis, detergents, and mineral oils. Avoid prolonged exposure to concentrated sulfuric acid or strong solvents (e.g., acetone) for maximum lifespan.
Is the 4” size suitable for pallet jacks in warehouses?
Yes. The 4” wheel (125KGS load capacity) and rigid/swivel options fit standard pallet jacks, optimizing cargo turnover in logistics centers. The waterproof design also protects against floor cleaners used in warehouses.
Do these casters meet food safety standards?
Yes. The PP and PVC wheel materials are food-grade, non-toxic, and easy to sanitize—making them compliant with FDA or EU food processing regulations for use on production line carts or refrigeration equipment.
How long do PVC bearings last compared to steel bearings in wet environments?
PVC bearings typically last 2–3 times longer than uncoated steel bearings in wet/chemical environments, as they do not rust. With minimal cleaning, they maintain performance for 3–5 years in regular industrial use.
