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9x3.50-4 Electric Wheelchair Wheels Solid Tyre

9x3.50-4 Electric Wheelchair Wheels Solid Tyre

Size: 9x3.50-4
Rubber Tire Brand: Cheng Shin.
Rim Material: Aluminum
Tread: C203G.
Material: Rubber and Polyurethane.
Bead Width: F65mm.
Load Capacity: 75kg.

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Product Details

1. Product Introduction of 9x3.50-4 Electric Wheelchair Wheels Solid Tyre

9x3.50-4 solid tyres are foam filled tires which are pneumatic tires filled with urethane foam. The tire consists of two parts: rubber outer tube, microcellular polyurethane elastomer filled or inserted inside. The brand of rubber tires mainly is Cheng shin Or Innova. Its max. loading is about 75KGS per wheel. We can also custom the wheels as per ur loading requirement.

Foam Filled Wheel


2. Product Parameter(Specification)of 9x3.50-4 Electric Wheelchair Wheels

2 Wheels' Structure.jpg



9x3.50-4 Electric Wheelchair Wheels Solid Tyre


Polyurethane and Rubber

Rubber Tire Brand

Innova/Cheng Shin




Black or grey or others


Electric Wheelchair Rear Wheels




carton and polybag

Loading port:


Brand name:



3. Power Wheelchair Wheel’s Production Process And Its Size Range:

3  Production Process(001).jpg

For the foam filled tires, our sizes include 200x50, 2.80/2.50-4,3.00-4, 4.10/3.50-4, 4.10/3.50-6, 3.00-8 etc. 4 inch to 16 inch diameter.

4. Solid Tyre's Production Technology: SPIN-Cast Molding

The process of spin-cast molding is used to insert foam fill into tires. This process helps create a dense, firm tread area while keeping the sidewall area flexible. The distribution of the foam fill is even and accurate ensuring excellent shock absorption. This helps provide the user with a smooth ride, every time.

5  PU Filled Solid Rubber Tires.JPG


5. Electric Wheelchair Wheel's Certificates

All of the products can meet the requirements of ISO7176 standard and have passed the testing requirements of ROHS and REACH. Some of them can even meet the German GS standards for children's products.

Solid Tire Test Report 

6. Poly Foam Filled Tire Feature And Its Application

Poly Foam Filled Tire, simply called FF Tire, consists of two parts: rubber outer tube, microcellular polyurethane elastomer filled or inserted inside. With the superior performance in the aspects of inflation free, anti- puncture, flat free, good cushioning maintenance free and high security etc., it is widely used in the field of Wheelchairs, Mobility Scooters, Strollers, Robots, Tool carts and Sports Equipment. While satisfying customer’s esthetic-demand for   traditional rubber tires, it also conquers the defects of air-filled tires: the potential risks of easily punctured, gas leakage, flat tire and frequent maintenance.

mobility scooters

7. Our Company

Xiamen Aleader Tire Wheel Technology Co, Ltd is a professional manufacturer focused on the research and production of high-performance solid tires. Established in 2010, we are located in the beautiful coastal city of Xiamen in Fujian Province, China.

Our company manufactures high-quality PU tires and PU foam-filled solid tires for clients around the world. With a focus on superior performance, high load capacity, and anti-abrasion, anti-puncture durability, our solid tires are widely used in high-end wheelchairs, bicycles, strollers and engineering vehicles around the world.

Our team's more than 15 years of experience in the polyurethane field helps ensure that all our clients receive the most professional service and the most superior quality products available. All of our products have been rigorously tested for safety and quality and have passed all of the requirements necessary to meet the international ISO7176 standard as well as the testing requirements of ROHS 2.0 and REACH. In addition to that, we have passed the rigorous testing required to receive the German GS certification mark for all our tires manufactured for use in childrens products. Our main markets are the United States, Britain, Germany, Canada, and Japan, as we continue to expand to other countries and regions around the world.

PU Tire Factory


8. FAQ 

Q1: Can I get a sample ?

We are glad to offer you a sample, but the sample cost and freight cost will be at your side.

Q2: What about the lead time for sample and mass production?

For a regular sample,we can send it to u within 7 days.

Mass Production:

PU Solid tire: if the mould is available, we need around 20-25 days.

If the mould needed to open, we need around 30-35 days.

For Foam filled tire, if the rubber tire is available, production time is 20-25 days.

If rubber tire needs to produce, we need around 40-45 days.

Q3: How to purchase your products?

Inquiry→Quotation→Purchase Order→PI→Confirm PI→Arrange 30% deposit→Producing→Process Audit→QC Inspection→Book shipping space→Pay balance payment→Shipping

Q4: What certificates do you have ?

ROHS 2.0, Reach SVHC, PAHS, Phthalate 6P by SGS.

Q5: What is the payment terms of your company ?

T/T, Irrevocable L/C at sight, Paypal, Western union.

Q6: If I want to be your distributor ,what can you give me ?

Firstly, Small quantity for marketing try .

Secondly, research, delivery and production support .

Thirdly , Customized design for your market .

We can have a happy cooperation and earn money together !

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