K53 Heavy Duty Caster (Over 8000 LBs. Capacity)
- KoCo
- China
- 15~30days
- 20 million per year
Product Description:
The K53 series heavy duty casters 4000kg uses a top plate and raceway that are both thoroughly machined to achieve smooth movement and a long wear cycle. The turning part is also a plane bearing and a thrust bearing for smoother operation.



Advantages:
Load-bearing structure: The top plate thickness ranges from 16mm to 20mm, and combined with a 30mm/40mm giant central pivot pin, there is guaranteed no structural deformation under 4 tons of extreme pressure.
Smooth steering technology: Instead of standard ball bearings, an industrial-grade plane pressure bearing structure is used to bring down the friction coefficient, thereby enabling a single person to easily push a fully loaded trolley without help.
Wear-resistant wheel core: The range of materials includes high-strength PU cast iron core, reinforced nylon, and forged steel, specially designed to be used on heavy industrial floors with minimal starting resistance and excellent capability to resist impacts.
Long-lasting anti-corrosion coating: A high-performance industrial powder coating has been applied over the entire surface, which is not only oil-resistant but also water-resistant and corrosion-resistant, thereby making it suitable for continuous working conditions of high intensity.
Top Plate | 6”8”10”/12”14” top thickness:16mm/20mm; York thickness:12 mm/14 mm |
Finish | Powder-coated, water, oil, and corrosion-resistant |
Swivel | Plane bearing and thrust bearing |
Kingpin | 30 mm/40 mm |
Wheel Bearing | Ball, Roller, Tapered Roller |
Axle | 30mm dia. bolt with locknut |
K53 Quick Selection Guide:
Step 1: Choose the specifications according to the load
6" - 8" (152-203mm): The perfectly fit choice for compact heavy loads, also great for handling molds and precision platforms that have a low center of gravity.
10" - 14" (254-356mm): A giant wheel diameter provides excellent obstacle-crossing ability and the highest rolling efficiency.
Step 2: Opt for the wheel material depending on the ground surface
PX Polyurethane (PU): [Our Heavy-duty recommendation]
Protects vulnerable epoxy floorings, plus shock absorption and quietness of operation.
NX Reinforced Nylon:
The product would be okay on even ground, focusing on providing the easiest start plus chemical resistance.
FS Forged Steel Wheels:
These wheels constitute an extremel tough design for the steel mills, mining, and other such heavy industries, and are basically indestructible.
Step 3: Lock Safety Features
Swivel: Flexible operation 360°.
UWB (Front Brake): Brings about immediate and stable stopping, multi-ton equipment, thus ensuring safety of operations.
PSL (Directional Lock): Ideal for long-distance straight-line towing, and thus being able to prevent the equipment from swaying or deviating.

| Wheel Diameter | Wheel Width | Wheel Material | Bearing | Load Capacity | Radius of Rotation | Height | Swivel Model | Rigid Model |
152 | 100 | PX Heavy-Duty PU/Cast Iron NX High-Strength Nylon FS Forged Steel | Double Ball Bearing Double Ball Bearing Double Ball Bearing | 2200 3500 3500 | 132.5 | 230 | K53PXB60100S01 K53NXB60100S01 K53FSB60100S01 | K53PXB60100R01 K53NXB60100R01 K53FSB60100R01 |
| 203 | 100 | PX Heavy-Duty PU/Cast Iron NX High-Strength Nylon FS Forged Steel | Double Ball Bearing Double Ball Bearing Double Ball Bearing | 2200 3500 3500 | 157 | 281 | K53PXB80100S01 K53NXB80100S01 K53FSB80100S01 | K53PXB80100R01 K53NXB80100R01 K53FSB80100R01 |
| 254 | 100 | PX Heavy-Duty PU/Cast Iron NX High-Strength Nylon FS Forged Steel | Double Ball Bearing Double Ball Bearing Double Ball Bearing | 2500 3500 4000 | 182 | 332 | K53PXB10100S01 K53NXB10100S01 K53FSB10100S01 | K53PXB10100R01 K53NXB10100R01 K53FSB10100R01 |
| 305 | 100 | PX Heavy-Duty PU/Cast Iron NX High-Strength Nylon FS Forged Steel | Double Ball Bearing Double Ball Bearing Double Ball Bearing | 3000 3500 4000 | 215 | 383 | K53PXB12100S01 K53NXB12100S01 K53FSB12100S01 | K53PXB12100R01 K53NXB12100R01 K53FSB12100R01 |
| 356 | 100 | PX Heavy-Duty PU/Cast Iron NX High-Strength Nylon FS Forged Steel | Double Ball Bearing Double Ball Bearing Double Ball Bearing | 3000 3500 4000 | 240 | 443 | K53PXB14100S01 K53NXB14100S01 K53FSB14100S01 | K53PXB14100R01 K53NXB14100R01 K53FSB14100R01 |
K53 Optional brake types:

1Kg = 2.20462 lbs
Note: For the models, +UWB after the model name means there is a front brake.
K53 Series Industrial Caster Mounting Plate Specifications:
K53 series large heavy duty caster wheel provides two specifications of extra-thick heavy-duty mounting plates.
Specification 01 (Suitable for 6" / 8" / 10" wheel diameters).
Plate Thickness: 16mm (Extra-thick reinforced steel plate).
Overall Plate Dimensions: 186 × 220mm.
Bolt Hole Pattern: 146 × 180mm.
Attaching Bolt Size: Ø10 / Ø17.
Specification 02 (Suitable for 12" / 14" wheel diameters)
Plate Thickness: 20mm (Tank-grade load-bearing steel plate)
Overall Plate Dimensions: 195 × 248mm.
Bolt Hole Pattern: 146 × 200mm
Attaching Bolt Size: Ø12 /Ø17.
Application Areas:
Heavy industrial manufacturing.
Aerospace industry.
Heavy-duty warehousing & logistics equipment.
Automotive manufacturing.
Mold & die handling systems.
Energy & infrastructure Equipment.
About Us:
We could solve these problems professionally in our factory.
Since our founding in 1999, we have had 25 years of hands-on experience and a 50,000-square-meter intelligent manufacturing space, which has enabled us to tailor mobile solutions for different industries. The over 200 core technical personnel are the heart of making it happen, guaranteeing precise design and manufacturing of molds to fit even very demanding conditions in the most challenging work situations at a high-load annual production of 20 million Heavy caster wheels. As a direct factory supplier, KoCo constantly applies its 25 years of industry insights to lead highly advanced manufacturing sectors such as new energy, automotive, and aerospace, thus demonstrating that, in addition to being a leader in scale, we are also a technology leader in customized mobile solutions.

Warranty:
When you buy KoCo casters, you gets 1-year warranty on the material and workmanship. In the event that goods are returned within one year after delivery due to defects resulting from manufacturing negligence or inherent faults of materials, we shall provide a free replacement service upon the inspection result. Except for product damages due to unauthorized modification, operation beyond the specified load limits, or insufficient environmental compatibility test, such a warranty shall not apply. Replacement of products shall be final after-sales service by KoCo, wherein the customer shall not look for a refund of the shipping cost and/or the engineering installation cost involved. At the same time, KoCo also clearly states that we do not take responsibility for indirect or punitive damages that may result from the specific industrial application scenarios.
Partners:
KoCo caster - a thorough collaboration with many leaders in the industry.
Automotive: Tesla, BMW, Mercedes-Benz, Audi, BYD, FAW, SAIC, Ford.
Energy: CATL.
Logistics: SF Express, JD.com.
Home Appliances: Haier.
Aerospace:COMAC.

KOCO Performance Testing:
KOCO has a professional R&D laboratory, and the test reports shown are just one example of our typical cases, providing you with a quality reference. We possess strong professional testing capabilities and can provide targeted performance verification and simulation experiments based on your specific load, road conditions, and industry standards.
Test video:
Test report:

What Is the Lead Time for Delivery?
The lead time depends on how many and what models you order. We arrange production very efficiently to be able to made deliveries on time. (Usually within 15-30 days)What Is Your Production Capacity?
Our maximum annual production capacity is up to 20 million casters.What International Shipping Methods Are Supported?
We can do sea freight, air freight, and land transportation to best satisfy the customer needs.How Many Years of Manufacturing Experience Do You Have?
Over 25 years.Which Industries Are KoCo Casters Suitable For?
At present, KoCo casters have become a common feature in a variety of industries and sectors including industrial, heavy-duty logistics, AGV/AMR, medical equipment, warehousing, furniture, and home appliances.What Is the Load Capacity of KoCo Casters?
KoCo casts have a full range of capacities from light to extra-heavy-duty casters with a load capacity of several tens of kilograms to a few tons. Check out the model of the specific product for more details.Does KoCo Casters Support Customization?
Definitely, if there is a need for a specific part like wheel size, material, core structure, or surface treatment, we are able to offer custom manufacturing.How to Conduct Quality Testing?
KoCo Casters are subjected to several quality and performance tests before they are shipped. The tests include: Load Test: Ensures the caster is safe to hold the rated load. Starting Force Test: The test proves if the load can be moved smoothly with minimal friction of resistance. Noise & Deflection Test: The test results focus on low noise generation, quiet operation, and minimal deviation during movement.





