Industrial Heavy-Duty Low Profile Double Wheel Swivel Casters

The AstraRoll Technical Advantage

Engineering a caster that is both incredibly short and capable of bearing multi-ton loads requires specialized geometry:

Ultra-Low Center of Gravity: By minimizing the overall height (often keeping the equipment just 70mm to 100mm off the ground), these casters virtually eliminate the risk of heavy cabinets or machinery tipping over when pushed, ensuring maximum safety for both the equipment and the operators.

Dual-Wheel Differential Action: When a single, wide wheel is forced to turn 90 degrees under a heavy load, it creates massive friction, often locking up or tearing the floor. Our twin-wheel design allows the two wheels to rotate independently at slightly different speeds during a pivot. This drastically reduces steering resistance, making it remarkably easy to maneuver heavy racks into tight corners.

Heavy-Gauge Swivel Yoke: Because the caster is short, the swivel yoke absorbs intense lateral forces. We utilize extra-thick carbon steel plates with precision-machined, hardened ball raceways, guaranteeing the caster will not bend or seize up under dynamic loads.

High Load-to-Size Ratio: Despite their small wheel diameters (typically 2-inch to 3-inch), the use of premium MC Nylon or high-density PU allows a single small caster to bear loads ranging from 300 kg to over 1,000 kg, rivaling casters twice their size.

Key Specifications

Please note: AstraRoll low profile casters are available in standard configurations or custom-engineered to match your specific mounting hole patterns.

Wheel Diameters: 2" (50mm), 2.5" (63mm), 3" (75mm).
Overall Height: Ranges from 70mm to 110mm (depending on wheel size).
Wheel Width: Dual 20mm, 25mm, or 32mm wheels per caster.
Dynamic Load Capacity: 300 kg to 1,000+ kg per single caster.
Wheel Material: MC Nylon, Polyurethane (PU), or Cast Iron.
Top Plate: Heavy-duty carbon steel, zinc-plated.

Why Choose AstraRoll?

1. Precision Floor-Protecting Polyurethane

If your equipment is being rolled into cleanrooms, hospitals, or high-end commercial spaces, scratching the floor is unacceptable. Unlike cheap plastics, our custom-cast Polyurethane (PU) twin wheels offer a perfect balance: they are hard enough to bear extreme weight without compressing, yet elastic enough to glide silently without leaving a single scuff mark on expensive epoxy, tile, or hardwood floors.

2. OEM Frame Integration

As a factory-direct supplier, we cater heavily to machine builders and OEM fabricators. If your server rack or automation frame requires a specific metric thread, a unique top plate dimension, or a specific overall height to match an existing design, AstraRoll can CNC-machine and stamp custom brackets to seamlessly integrate into your product line.

Frequently Asked Questions (FAQs)

Q: Should I choose MC Nylon or Polyurethane (PU) wheels for my low-profile casters?
A: Choose MC Nylon if your primary goal is maximizing load capacity and you are rolling the equipment on rough, industrial concrete where floor protection is not a concern. Nylon is incredibly hard and has the lowest rolling resistance. Choose Polyurethane (PU) if you are moving heavy equipment on smooth, finished floors (like in data centers, offices, or labs) and need shock absorption, quiet operation, and zero floor scratching.

Q: Because these casters are so low to the ground, can they roll over cables or thresholds?
A: No. This is the necessary trade-off for a low center of gravity. Low profile casters (typically 2" or 2.5" in diameter) have very little ground clearance. They are designed strictly for flat, smooth surfaces. They will easily get stuck on thick cables, deep expansion joints, or door thresholds. The floor must be clear of debris.

Q: How do I calculate the total load capacity needed for four casters?
A: When moving heavy, rigid equipment, the floor is rarely perfectly flat. Often, the entire weight of the machine shifts onto just three casters. Therefore, you must use the standard safety formula: (Total Weight of Equipment + Max Payload) ÷ 3. For example, if your loaded server rack weighs 1,500 kg, each individual caster must be rated for at least 500 kg.

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.