Products Description
Specification
| Size | 8inch(200x50) |
| Outer Rubber Casing Supplier | Cheng shin |
| Composite Construction | Natural rubber outer tyre + PU foam inner core |
| Filling Medium | Polyurethane |
| Wheel Hub Raw Material | Aluminum |
| Available Surface Shades | Grey/Black |
| MOQ | 300pcs |
| Lead Time | 60-75days |
| Applicable Matching Scenarios | Wheelchair parts,Mobility scooter parts |
This 200×50 foam-filled wheel assembly adopts genuine Cheng Shin rubber outer casing paired with customized microcellular PU foam inner filling, fitted with lightweight cast aluminum rims for mobility equipment retrofitting. Instead of traditional inflatable inner tubes, the integrated foam insert eliminates air leakage and sudden deflation risks entirely. The matched dual-density structure balances road shock absorption and stable load bearing, delivering consistent rolling performance on pavement, gravel and indoor hard floors. Every finished wheel undergoes full compression and rolling fatigue testing before dispatch, serving as reliable aftermarket replacement spare parts for manual wheelchairs and compact elderly mobility scooters.
Distinct from single-density solid PU wheels, this tyre combines commercial-grade rubber tread and evenly distributed PU foam filling. The Cheng Shin rubber outer layer adds anti-abrasion agents to slow tread thinning under frequent outdoor rolling, offering superior ground grip on damp surfaces. The elastic foam insert inside disperses impact force evenly without hollow collapse under sustained weight, while the aluminum rim resists rust and deformation in humid environments. One-time foam injection molding ensures seamless bonding between rubber shell and foam core, avoiding layer separation after thousands of travel cycles to extend overall service lifespan.
Practical Operation Core Strengths
Zero inflation daily maintenance
No air pump, pressure gauge or patching tools required; fully skip regular tyre upkeep procedures
All-terrain puncture shielding
Dense foam core blocks nails, glass fragments and sharp gravel, stopping unexpected travel interruptions
Stable seasonal performance
Rubber and PU composite formula resists low-temperature embrittlement and high-temperature softening deformation
Eco-compliant safe raw stock
Filler materials contain no heavy metal additives, passing global RoHS & REACH environmental screening
Factory Full-Standard Batch Inspection Flow
- Each wheel set goes through multi-stage standardized verification before packaging:
- Raw material incoming inspection: Rubber tread aging resistance test, PU foam tensile and environmental index detection
- Semi-finished foam filling uniformity inspection to avoid local hollow areas
- Finished assembly testing: Static load compression test, continuous rolling endurance test, rim anti-deformation check
- Manual full visual screening: Tread cracks, foam leakage, rim surface burrs and assembly gaps Only fully qualified wheel assemblies enter protective packaging for cross-border shipment.
One-Shot Foam Injection Craft & Integrated Bonding Technology
Different from secondary assembly filling processes used by most manufacturers, we adopt one-shot closed mold foam injection craft for the 200×50 tyre. After fixing Cheng Shin rubber tyre and aluminum rim in the mold, liquid PU material is injected and foamed in one go inside the rubber cavity. The foaming expansion pressure tightly fits foam core and rubber inner wall without gaps or partial hollow areas. No adhesive glue is added in the whole process, avoiding degumming and layer separation after long-term vibration. The integrated molding method greatly improves the overall structural stability of the wheel set.
Our Company
Brand Origins & Multi-Base Industrial Deployment
Aleader first launched its polyurethane processing lines in Xiamen after establishment in 2015, then transferred all core production workshops to Longyan Innovation Industrial Zone in 2023 to build a dual operational framework for material research and mass output. The group runs two separate professional subsidiary arms. Its Xiamen branch is stationed within the CAS Haixi Rare Earth Research Institute, functioning as an internal polymer testing hub and external technical exchange platform. The UNT division based in Longyan develops and manufactures PU/PIR ventilation duct insulation boards along with supporting installation fittings. Our flagship Longyan manufacturing base solely develops and produces microcellular PU wheels for rehab mobility gear, forming a dual-industry layout spanning mobility spare parts and construction thermal insulation products.
PU filled Rubber Tires Under the Microscope
Under the Scanning Electron Microscope (SEM), we can clearly observe the unique open-cell structure of the PU polyurethane tires from Aleader Tire.
We can also identify the uniformity and stability of the cell distribution, with the majority of cell diameters falling within the range of 50 to 100 micrometers.
These characteristics make Aleader's PU tires superior in performance.
Aleader 's PU tires are known for their excellent resilience and stability, as well as their wear resistance, puncture resistance, quiet comfort, environmental-
safety, and high load-bearing capacity. They are widely used in rehabilitation aids, mobility devices, and special equipment.
How To Check The Air Void Inside Foam Filled Tyres After Foaming PU?
Technology: we do a full tire shaping process before production. Our filling process uses centrifugal rotation to uniformly fill the PU raw materials into the tires and fully realize complete bonding between the tire and PU Foam, thus avoiding any air voids inside.
Every time replacing the material or starting the machine, we will cut one tire to check the inside of the tire to ensure there are no air voids or separations in the product.
Full-Link Quality Supervision Mechanism & Global Compliance Certifications
We fully deploy the ISO 9001:2015 management framework to build a complete quality oversight loop, covering raw material incoming screening, on-site production supervision, semi-finished random sampling, full finished goods audit and full after-sales quality traceability. Standardized operation manuals standardize every production and testing procedure across all workshops. Our goods hold various authoritative industry approvals: rehab wheels comply with ISO7176 and GB/T18029 norms; PU bicycle tyres carry TUV safety credentials; foam components touching infants satisfy EU GS regulations. All eco-performance test documents are released by independent third-party SGS, perfectly clearing market entry thresholds for EU, North American and Southeast Asian import traders.
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