TPU Omni-Directional Wheels for AGV & Mobile Robotics

The AstraRoll Technical Advantage: Precision Omni-Directional Drive
To achieve true omni-directional movement without jitter, the tolerances of the wheel must be flawless. We engineer our Omni series to conquer the friction and wear issues found in standard robotic wheels:

High-Traction TPU Rollers: Standard plastic or hard rubber rollers often slip on dusty warehouse floors, causing navigation algorithms to fail. Our premium TPU rollers provide exceptional floor grip (traction) while remaining highly resistant to wear, cuts, and tearing.

Dual-Bearing Roller System: Each individual TPU roller is equipped with dual precision-sealed ball bearings. This ensures that when the robot moves laterally (sideways), the rollers spin with near-zero friction, drastically reducing the torque load on your drive motors and extending battery life.

Reinforced Aluminum Hub: The core of the wheel is machined from solid 6061-T6 aerospace-grade aluminum. It is engineered to withstand extreme torsional forces from high-torque stepper or servo motors without warping or degrading over time.

Continuous Contact Profile: The rollers are geometrically arranged (often in a double-row staggered layout) so that the transition from one roller to the next is completely seamless. This eliminates the "bumping" effect, protecting sensitive onboard sensors and payloads.

Key Specifications & Technical Attributes

Available Diameters: 5" (127mm), 6" (152mm), 8" (210mm), 10" (254mm).

Roller Material: Polyurethane (TPU) - Non-marking and highly elastic.

Hub Material: Aluminum Alloy (Anodized or Sandblasted finish).

Load Capacity (8" / 210mm Model): 90 kg (198 LBS) per wheel.

Roller Bearings: 2x Precision Ball Bearings per individual roller.

Mounting Interface: Customizable center bore (Keyway, Hex, Spline, or standard circular with set screws) to perfectly match your motor shaft.

Why Choose AstraRoll? (Your Robotics Manufacturing Partner)

Scalable OEM Production
Whether you are prototyping a single AMR chassis or launching a fleet of 1,000 automated forklifts, AstraRoll scales with your demand. We maintain strict ISO quality control so every wheel performs identically, ensuring your navigation software requires zero recalibration between batches.

Custom Coupling & Bore Design
We understand that every drive system is unique. Instead of forcing you to use universal adapters that introduce mechanical "play" (backlash), our factory can CNC machine the wheel's center bore and mounting holes to perfectly match your specific servo, stepper, or planetary gearbox output shaft.

Frequently Asked Questions (FAQs)

Q: What is the main difference between an Omni-directional wheel and a Mecanum wheel?
A: The angle of the peripheral rollers. Omni wheels have rollers mounted at 90 degrees to the wheel's main axis, while Mecanum wheels have rollers mounted at 45 degrees. Omni wheels are often used in 3-wheel triangular bases or 4-wheel cross configurations, whereas Mecanum wheels are always used in a standard 4-wheel rectangular layout (like a car).

Q: Can these heavy-duty wheels be used outdoors?
A: Omni wheels perform flawlessly on hard, flat surfaces like factory concrete, epoxy, and tile. While our TPU is highly weather-resistant, the nature of omni-directional wheels means they can get clogged with thick mud, gravel, or deep sand. They are designed primarily for indoor or paved outdoor environments.

Q: If I use four 8-inch wheels (90kg capacity each), is my total robot capacity 360kg?
A: Theoretically, yes. However, in real-world robotics engineering, floors are never perfectly flat. Often, the weight is temporarily supported by only three wheels at a time. We recommend a safety factor of 1.5, meaning a 4-wheel system using 90kg wheels should comfortably carry a safe working load of about 240kg (including the chassis weight).

Q: Do the peripheral TPU rollers require lubrication?
A: No. Each TPU roller houses sealed precision ball bearings that are pre-lubricated for life. They are designed to be maintenance-free throughout the lifespan of the wheel.

Q1. Are you a trader or direct factory?

We are a direct manufacturing factory with over 20 years of expertise in high-end industrial rollers, casters and material handling solutions. Our facility operates with ISO-certified quality management systems, allowing us to maintain full control over production cycles and quality standards. Throughout two decades of growth, we have established deep, long-term strategic partnerships with several listed companies and global automation leaders, proving our reliability as a high-tier industrial supplier.

Q2. What are your main products?

AstraRoll specializes in the engineering and production of three core product lines: Industrial Rollers, Heavy-Duty Wheels, and Precision Casters. We do not just sell components; we provide integrated movement and transport solutions. Our products are widely utilized across high-demand sectors, including: New Energy, Lithium Battery, Mining, Heavy Industry, Medical Institutional, Agriculture and Logistics.

Q3. What about delivery time?

We deeply understand that project timelines are critical.
Standard Products: Usually dispatched within 7–15 working days if the components are in stock.
Customized/OEM Orders: Depending on the complexity and volume, the lead time typically ranges from 20–35 days. This includes time for technical drawing confirmation, specialized tooling, and rigorous pre-shipment testing.
Shipping Methods: We offer flexible global logistics solutions, including FOB and CIF terms. We ship via Sea Freight (for bulk industrial orders), Air Freight (for urgent project needs), and International Express (DHL/FedEx/TNT) for smaller components or samples.

Q4. How can I get a quote for customized products?

Since a significant portion of our business involves specialized engineering, pricing is tailored to your specific technical requirements. To provide an accurate quote, please provide the following details: Technical Drawings or Sketches, Application Environment, Quantity, Special Requests. Our engineering team typically reviews and responds to custom inquiries with a formal quotation within 24–48 hours.

Q5. What is your payment?

TT / Paypal / Western Union / LC / Credit Card etc. are all available to us.