Description

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About the Products

What it is

This series of foam filled tires adopts a mature composite structure combining professional Cheng shin rubber casing and customized microcellular polyurethane foam filler. Different from traditional pneumatic tires and full-solid rubber tires, we inject liquid polyurethane compound into the inner cavity of standard rubber tires through professional vacuum filling technology. The material fully fills every corner inside the tire and cures naturally to form an integrated elastic core, completely replacing compressed air.

Tailored exclusively for manual wheelchairs, electric wheelchairs and elderly mobility scooters, this product strikes a fine balance between the traction and abrasion resistance of outer rubber and the cushioning, support and anti-puncture performance of internal foam. It is built for daily urban roads, gravel paths, ramp passages and other complex scenarios, focusing on long-term stable operation and low daily maintenance. Every finished unit is produced in strict accordance with medical mobility equipment industry standards, suitable for mass matching, after-sales replacement and customized supporting for brand equipment.

Detailed Product Specifications

Standard Size	2.50-4
Outer Tire Brand	Cheng shin
Tread Pattern Code	C178
Overall Structure	Rubber outer casing + polyurethane foam inner filling
Filling Material	High-density microcellular polyurethane elastomer
Color	Black/Grey
MOQ	300pcs
Applicable Equipment	Wheelchair accessories, mobility scooter spare parts

Material & Production Craft

Outer Rubber Casing

We select original Cheng shin rubber tire with exclusive C178 tread design. The rubber formula is optimized for frequent start-stop and low-speed travel of mobility equipment. The thickened tread layer enhances friction and anti-wear ability, while the reinforced sidewall effectively resists extrusion and cracking during steering and crossing obstacles. The natural rubber material ensures stable grip on dry, wet and slippery ground.

Polyurethane Foam Filling Core

The internal filler is self-developed modified microcellular polyurethane. After precise ratio blending, the raw materials form uniform and dense bubble structures inside the tire. The closed-cell design avoids material sagging and local collapse after long-term compression. The foam maintains moderate hardness and resilience, neither too hard to cause bumpy riding nor too soft to lose supporting force. Meanwhile, the added anti-aging and anti-ultraviolet additives extend the service life under outdoor exposure.

Vacuum Integrated Filling & Curing Process

We abandon simple manual filling and adopt fully automatic vacuum filling assembly line. Under negative pressure environment, the polyurethane liquid is evenly injected to ensure no gaps, bubbles or partial unfilled areas inside the tire. After constant-temperature curing for a fixed period, the foam core and rubber casing are tightly combined into one, no relative sliding or detachment occurs during long-term rolling. The whole process is completed in standardized workshops with strict temperature and time control to guarantee consistent product quality between batches.

Core Functional Advantages

Complete Anti-Puncture & Anti-Burst, Zero Daily Inflation Maintenance

As a non-pneumatic foam filled structure, the tire has no inner tube and no compressed air inside. On outdoor roads scattered with nails, broken glass, metal scraps and other sharp sundries, the rubber casing and dense foam core can effectively block piercing damage. Even if the outer rubber is scratched, the internal foam will not leak air or burst. Users no longer need to carry inflating tools or regularly check tire pressure, which greatly cuts down daily maintenance work and avoids travel interruptions caused by sudden tire failure. It is especially suitable for users who often travel outdoors and use wheelchairs for long distances.

Strong Load-Bearing & Stable Support, No Deformation Under Long-Term Pressure

The high-density polyurethane foam core has excellent compression resistance. When the wheelchair carries people and goods for a long time, the tire can always keep its original outline, without permanent denting, subsidence or sidewall bulging. The overall gravity center of the wheel set is reasonable, and it can maintain stable driving posture when crossing thresholds, gentle slopes and uneven ground, effectively preventing sideslip. For families with long-term use demands, the tire can maintain consistent supporting performance throughout the service cycle.

Low Rolling Resistance, Save Power & Quiet Rolling

The matched tread design and moderate hardness foam core greatly reduce rolling friction. When the electric wheelchair travels, the motor load is lowered, which indirectly reduces power consumption and extends the single-charge cruising range. During pushing or driving, the contact between the tire and the ground is smooth, producing far less rolling noise than ordinary solid tires. Whether used indoors in corridors and rooms or outdoors on streets, it will not cause noise disturbance.

Excellent Vibration Damping & Comfortable Riding Experience

The microcellular foam structure has natural shock absorption performance. When passing over potholes, gravel roads and road joints, the foam core can absorb most of the vibration and impact transmitted from the ground. Compared with hard solid rubber tires, it relieves jolting obviously and optimizes riding comfort. While ensuring comfort, it does not sacrifice structural stability, taking both comfort and safety into account.

About our company

Who we are

Founded in Xiamen back in November 2015, Aleader started out focusing on the research, development and manufacturing of polyurethane components. After years of steady operation and market expansion, we completed factory relocation to Longyan in July 2017, and gradually built up a complete industrial layout covering R&D headquarters, large-scale production base and specialized branch companies.

Rooted in polyurethane material application sector, we are a tech-focused manufacturer that integrates independent formula development, product molding, finished goods assembly and global sales. Our business scope covers microcellular solid PU tires, high-resilience foam parts, integral skin foam components, PU sponge raw materials and customized rigid foam inserts for carbon fiber wheelchairs. We mainly serve rehabilitation aids, mobility equipment and medical device industries, delivering one-stop customized component solutions for partners at home and abroad.

We own more than 20 years of accumulated experience in polyurethane material R&D. Instead of working alone, we carry out long-term joint research with the Institute of Rare Earths, Chinese Academy of Sciences and College of Polymer Science and Engineering of Sichuan University. By combining academic research and industrial production, we keep upgrading material formulas and optimizing product performance. All our production and testing activities follow strict standardized procedures. Our products have passed ISO7176, GB/T18029, GB/T12996 and a series of industry standards, as well as RoHS, REACH environmental tests. Products for infants comply with GS safety standards, and bicycle tires have obtained TUV certification, fully meeting diversified market access requirements across the globe.

Development Milestones

Our growth path has always been driven by steady expansion and strategic layout.

Nov 2015: Xiamen Aleader Tire & Wheel Industrial Co., Ltd. was established, marking the official launch of our PU product business.
Jul 2017: Production facilities were fully moved to Longyan, laying the foundation for large-scale mass production.
Jul 2020: Longyan Aleader Tire & Wheel Industrial Co., Ltd. was set up, further refining the production division for tire and wheel series.
Mar 2023: Our Xiamen subsidiary settled in Xiamen Rare Earth Materials Research Center of Haixi Institute, CAS, gaining access to top-tier research resources for material innovation.
May 2023: Aleader (Longyan) New Material Co., Ltd. was founded and settled in Longyan Innovation Park, completing the layout of the group's main operating entity.

Step by step, we have grown from a single production workshop into a group enterprise with multiple branches, clear division of labor and complete industrial chain.

Organization & Team

We have built a standardized and sound internal management system. The company is led by General Manager, with four vice presidents respectively in charge of R&D, business development, general affairs and production. A dedicated Quality Assurance Manager takes full charge of overall quality control work.

Below the management level, we have set up R&D Department, Business Department, General Affairs Department, Production Department and Quality Management Department. Each department is divided into multiple professional teams:

R&D team covers product design, material formula research and process engineering;
Business team includes domestic sales, international sales, marketing and customer support;
Production team manages manufacturing, production planning, equipment operation and on-site administration;
Quality team is responsible for daily inspection and quality engineering work;
General affairs team takes charge of finance, procurement, logistics and warehouse management.

Our core R&D team is composed of experienced technical personnel who have been engaged in polyurethane industry for decades. We also invite professional professors from Sichuan University to guide technical work. The whole team keeps forging ahead with unity, dedication and enterprising spirit, focusing on technology innovation and service improvement all the time.

R&D, Testing & Customization

Technology is our core competitiveness. We have jointly built a professional joint laboratory with Xiamen Rare Earth Materials Research Center, CAS, focusing on new material exploration and performance testing.

Our in-house testing laboratory is equipped with more than ten sets of advanced professional testing equipment, including vision measuring instrument, gravel impact tester, runout & side impact tester, Akron abrasion tester, rolling smoothness tester, long-running test machine, salt spray tester, pressure recovery tester, universal tensile testing machine, UV aging test chamber and programmable temperature & humidity chamber. All finished products will go through round-by-round performance tests before delivery, to make sure every item meets design standards and usage requirements.

Benefiting from decades of material accumulation and strong R&D capability, we deliver full-cycle customized services. For PU tires and foam products, we can adjust overall dimensions, tread patterns, material hardness, density and hub structure according to clients' drawings, samples or actual application scenarios. From initial scheme communication, formula trial production, sample confirmation to formal mass production, we provide one-to-one technical docking throughout the whole process, to create exclusive products matching your market positioning.

Product Range & Main Partners

Our product lineup is rich and diversified, with clear market positioning for each category. PU microcellular solid tires account for the largest sales proportion, which are widely supplied to electric wheelchairs, mobility scooters and service robots. Our high-resilience foam products and integral skin foam parts are applied to medical device armrests, backrests, seat cushions and infant safety seats; among them, memory foam pillows have become stable supply goods for international well-known brand Sealy. PU sponge materials and rigid foam inserts are mainly used for daily supplies, carbon fiber wheelchairs, fishing tackles and model aircraft.

Relying on reliable product quality and sincere service attitude, we have established long-term stable cooperative relations with many well-known brands at home and abroad, including WHILL, INNTCO, FEISHEN, JBH, Jiangte Motor, Qianxi Group, Hi-Fortune and so on. Our products are exported to many countries and regions around the world, winning consistent recognition from global buyers.

Quality System & Service Guarantee

We have fully implemented ISO9001:2015 quality management system, and compiled a complete set of standardized management documents, covering manual management, document & record control, non-conforming product disposal, internal audit, product inspection, production management, procurement control, design & development control and other links. Standardized rules run through every production and management procedure, effectively standardizing internal operation and stabilizing product quality.

We regard quality as the foundation of enterprise survival. A complete quality control mechanism covers raw material incoming inspection, in-process monitoring and finished product delivery inspection. Once problems are found, targeted corrective and preventive measures will be adopted in a timely manner to avoid repeated defects.

We set up an independent customer service team separated from the sales department. The team responds quickly to customer consultation, technical communication, after-sales feedback and other demands, solving practical problems for partners in the first place. We always adhere to customer-oriented principle, and strive to create stable and win-win cooperation for every client.