Find detailed engineering and logistics answers regarding technical specifications, custom tooling, minimum order quantities, and material performance.
Q: What is the primary difference between press-on solid PU tires and pneumatic cart tires?
Press-on solid Polyurethane (PU) tires are bonded directly onto steel rings or hubs, offering maximum load-bearing capability (up to 8,000 kg per wheel) and zero puncture risk, making them ideal for flat industrial indoor floors. Pneumatic tires utilize compressed air inside rubber casings, delivering superior shock absorption, ground clearance, and grip on uneven outdoor terrain like golf courses and dirt trails.
Q: How do I correctly calculate the load capacity required per wheel for an industrial cart?
To ensure safety, calculate target load capacity using the standard engineering safety formula: Load per Wheel = (Total Tare Weight of Cart + Maximum Payload Weight) ÷ 3. We divide by 3 rather than 4 because uneven floor gradients often cause three wheels to carry the entire load simultaneously while one wheel briefly loses traction.
Q: Can your factory manufacture custom wheel rims and hub keyway patterns for non-standard axles?
Yes. We maintain a full CNC machining center and stamping facility. We manufacture custom bolt patterns (e.g., 4x4", 4x100mm, 5x114.3mm), keyway broaching, splined shafts, metric/imperial bearing bores, and custom wheel offset configurations according to your CAD drawings.
Q: What tread compounds are recommended for non-marking cleanroom applications?
We recommend our high-grade Thermoplastic Elastomer (TPE) or specialized light-gray / translucent Polyurethane (CPU) compounds formulated without carbon black fill. These guarantee 100% non-marking performance on epoxy-coated, sealed concrete, or tiled cleanroom floors.
Q: What standard tests are performed before shipment to ensure product reliability?
Every production batch undergoes five mandatory quality control checks: 1) Raw rubber/PU durometer hardness verification, 2) Dynamic fatigue endurance running test under 150% overload, 3) Tensile and tear strength testing, 4) Salt-spray corrosion test on metal rims, and 5) Concentricity/run-out measurement on full wheel assemblies.
Q: What is the typical lead time for standard products and custom tooling orders?
Standard catalog wheel and tire models are available from inventory or produced within 10–15 days. Custom rim tooling and new tire mold development typically require 25–30 days for sample sign-off, followed by 20 days for bulk production.