K41 Polyurethane On Cast Iron Caster
- KoCo
- DANDONG CHINA
- 15~30days
- 20 million per year
Product Description:
The K41 series heavy duty polyurethane caster features a large top plate and raceways, which together provide easy swiveling and strength with a full double-level ball bearing and heat-treated raceway.



Advantages:
Load-bearing Structure:
In contrast to the typical series, the K41 heavy duty industrial caster chassis components are made of thick, heavy-duty, industrial-grade steel. The top plate is 6-8mm thick, the bracket 5.5-7.5mm thick, and combined with a hydraulically riveted kingpin with a diameter of up to 18/24mm, the whole thing provides very high structural stability and resistance to shear.
Heat-Treated Double Raceway:
The swivel head consists of a large-diameter top plate and two layers of steel ball raceway, with the raceway being hardened and deep heat-treated. Apart from increasing the impact strength of the structure, this solution also resulted in a heavy-load steering problem being solved, thus making the operation easier.
High-Performance Cast Iron Core Wheels:
Wheel cores are made of cast iron, which is a very strong material, and the outside is covered with high-quality polyurethane. This combination marries the ultimate load-bearing capacity of cast iron and the ground-friendly nature of polyurethane, giving excellent wear resistance and chemical corrosion resistance.
Full Size Coverage:
Sizes 6 inches to 12 inches can be found in the K41 series. The 10-inch and 12-inch sizes are meant for very large pieces of equipment and guarantee that the vehicle will be able to go and stand even under high loads.
Flexible Braking Options:
You can also choose the front braking system UWB, which quickly locks the wheels, assuring the safety of heavy equipment on slopes or job site locations.
| Top Plate &Yoke | 6”8”/10”12” top thickness:6/8mm; York thickness:5.5/7.5mm |
| Finish | Zinc plated |
| Swivel | Two rows of ball bearings in hardened raceways for extra strength |
| Kingpin | 18/24mm steel rivet, hydraulically upset |
| Wheel Bearing | Ball, Roller |
| Axle | 20 dia. bolt with locknut |
41 Series Professional Selection Recommendations:
Step 1: Determine Load Capacity Requirements:
500kg - 600kg: Opt for either 150mm (6") or 200mm (8") sizes. Both of these sizes offer a perfect mixture between flexibility and strength, which is just right for material handling carts that are moved very often.
750kg - 800kg: 250mm (10") or 300mm (12") sizes must be selected. The larger diameter wheel (300mm) has a height of 355.5mm, hence it is able to provide better structural support.
Step 2: Choose Wheel Surface Shape (PI vs UC):
The flat wheel should be chosen if the material is PI (Flat PU). There is a more extensive surface in contact, the load is distributed evenly, and the stability is higher, which makes it perfect for long-lasting static loading or low-speed linear movement.
Choose UC (Crowned PU) if the wheel is crowned. There is conversely a lesser contact area, thus a lower friction resistance during turning, and it is suitable for situations that require Frequent changes of direction or manual pushing.
Step3: Check Mounting Plate:
Specification 01: The 6-inch and 8-inch models are the targeted products. The base plate measures 160×115mm. Multi-hole adaptability feature (from 133.8×85.4mm to 126.2×62mm) allows you to easily replace the heavy caster wheel on the old equipment.
Specification 02: 10-inch and 12-inch heavy-duty models only. Base plate size is 180×170mm, and the fixing bolts are thicker, Ø17 ones, in order to withstand extremely heavy loads.
Step 4: Consideration of the Application Environment
Use in equipped drying (Dryers): wheel material temperature resistance limit should be confirmed through customer service.
Powered traction (Tractor/AGV): It is advisable to select UC crowned wheels to save motor turning load and use excellent bearings.

| Wheel Diameter | Wheel Width | Wheel Material | Bearing | Load Capacity | Radius of Rotation | Height | Swivel Model | Rigid Model |
| 150 | 63 62 | PI Flat PU/Cast Iron UC Crowned PU/Cast Iron | Double Ball Bearing Double Ball Bearing | 500 | 120 | 194 | K41PIB6063S01 K41UCB6062S01 | K41PIB6063R01 K41UCB6062R01 |
| 200 | 63 62 | PI Flat PU/Cast Iron UC Crowned PU/Cast Iron | Double Ball Bearing Double Ball Bearing | 600 | 144 | 237.5 | K41PIB8063S01 K41UCB8062S01 | K41PIB8063R01 K41UCB8062R01 |
| 250 | 63 64 | PI Flat PU/Cast Iron UC Crowned PU/Cast Iron | Double Ball Bearing Double Ball Bearing | 750 | 188 | 292 | K41PIB1063S02 K41UCB1064S02 | K41PIB1063R02 K41UCB1064R02 |
| 300 | 63 64 | PI Flat PU/Cast Iron UC Crowned PU/Cast Iron | Double Ball Bearing Double Ball Bearing | 800 | 207 | 355.5 | K41PIB1263S02 K41UCB1264S02 | K41PIB1263R02 K41UCB1264R02 |
1 kg = 2.20462 lbs
Note: Swivel style models have the suffix "+UWB": Front Brake.
Product Applications:
Large cargo handling equipment, Heavy machinery, Material handling carts, Dryers, Platform trucks, Heavy-duty scaffolding.
About Us:
At KoCo, want to let the world know that we follow the path of"growth through quality" every step and day. We are a factory incorporating R&D and manufacturing, and thus we have tight control over the process, not only in the component inspection but also from raw material procurement to finished product delivery. More than 200 of our employees are involved, and among them, the technical quality control team constitutes a considerable percentage. We normally produce 20 million heavy equipment casters a year. If a customer has a special request, we will be able to provide them professional customized services, such as drawing design and mold development, which will all be done at our factory. If you are choosing KoCo, you are basically partnering with the manufacturer that regularly implements a rigorous quality inspection system and also has strong manufacturing capabilities.

Cooperation Cases:
KoCo Caster has earned the deep trust of leading companies in multiple key sectors globally. Our client list includes the world's most prominent automotive manufacturers, energy technology, modern logistics, home appliances, and aerospace suppliers. Whether it is luxury car brands like Tesla and Mercedes-Benz, with their almost quality requirements, logistics giants like SF Express and JD Logistics, with their extremely high demands for efficiency, or CATL, a leader in energy transformation, all have chosen KoCo as their mobile component supplier. Besides that, our long-term collaborations with Haier and COMAC further illustrate our flexibility in operating conditions. Joining forces with industry frontrunners has been the main driver of KoCo's steadily growing brand value.

Warranty Service:
KoCo has designed a comprehensive after-sales service plan for our products so that all our partners can have peace of mind in using them. The moment the goods are delivered to your warehouse, you get quality protection for a whole year. We hereby commit that in the case of any quality variations resulting from manufacturing defects, KoCo shall provide free repair support. We encourage users to adopt the proper methods scientifically; thus, overload or installation faults resulting in damage will not be warranted. If the manufacturing quality issue is verified on a product, we will send a replacement free of charge; you have to bear the shipping cost only. We are completely confident in our quality.
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.






