The structure of a wheel is usually composed of several key parts, and its structure may vary slightly depending on the usage scenario (such as automobiles, construction machinery, mining equipment). The following is the standard structure of wheels for common construction machinery (such as wheel loaders and trucks):
1. Rim
It is the outer rim of the wheel, used to mount the tire.
One-piece and multi-piece (2 to 5-piece) structures are common in construction machinery, which are convenient for the disassembly and assembly of heavy tires . Rim size such as "17.00-25/1.7" indicates its width, diameter and flange seat width.
2. Spoke
The part that connects the hub to the rim, carrying and distributing the weight of the vehicle. The spokes are usually thicker in construction machinery, and some large vehicles use a solid or disc structure.
3. Wheel hub
The center part installed on the axle is connected to the wheel rim and bearing to provide rotation support. The wheel hub is provided with screw holes for fixing the tire and wheel rim.
4. Locking ring and side ring
Mostly used on 5-piece rims, used to fix the tire on the rim, especially for tubeless OTR tires. Special tools are required for installation to ensure that it does not fall off under high pressure.
5. Valve seat
The valve hole or valve seat used to inflate the tire is often on the edge of the rim.
6. Tires
Installed on the outside of the rim and in contact with the ground, they are divided into pneumatic (with/without inner tube) and solid tires.
Engineering wheels need to withstand extremely high loads and impact forces, so high-strength alloy steel or special steel is used. Large mining truck or loader wheels are designed with a detachable structure to facilitate tire maintenance and component replacement. The wheel hub and axle are assembled through bearings to ensure smooth rotation.
HYWG is China's No.1 off-road wheel designer and manufacturer, and a world-leading expert in rim component design and manufacturing. All products are designed and produced according to the highest quality standards.
We have a research and development team composed of senior engineers and technical experts, focusing on the research and application of innovative technologies, and maintaining a leading position in the industry. We have established a complete after-sales service system to provide timely and efficient technical support and after-sales maintenance to ensure that customers have a smooth experience during use. We have more than 20 years of experience in wheel manufacturing. We are the original rim supplier in China for well-known brands such as Volvo, Caterpillar, Liebherr, John Deere, and JCB.
We provide 17.00-25/1.7 3PC rims for CASE 721 wheel loader.
CASE721 is a medium-sized wheel loader launched by CASE Construction Equipment, a world-renowned construction machinery manufacturer. It is widely used in construction, quarrying, material handling and municipal engineering. It is popular in the market for its stable performance, high efficiency and strong fuel economy.
CASE721 is equipped with a high-performance engine, providing sufficient power to cope with various harsh working conditions. The design focuses on improving loading efficiency, such as optimizing bucket design and fast response speed of hydraulic system. The cab is usually spacious and ergonomically designed, equipped with comfortable seats, good visibility and easy-to-operate controls, comfortable operation to reduce operator fatigue. Advanced engine technology and intelligent control systems are used to optimize fuel consumption. The design takes into account the convenience of daily maintenance, which is convenient for users to check and maintain. It can also adapt to different operating needs by replacing different attachments (such as various types of buckets, grabs, etc.), such as material handling, loading trucks, and site leveling.
What are the advantages of using CASE721 with 17.00-25/1.7 rims at work?
The CASE721 wheel loader is equipped with 17.00-25/1.7 rims. Its main advantages are reflected in load-bearing capacity, stability, passability and adaptability, and is suitable for heavy-load and high-frequency operating environments. The following are its main advantages:
1. Improve the load-bearing capacity of the whole machine
Tires that match 17.00-25/1.7 usually have a higher load-bearing rating (such as L3 and L5 patterns), and are suitable for carrying heavy objects in scenarios such as mines and material yards.
Used on medium-sized wheel loaders with a rated load of more than 3 tons, it can ensure stable operation without affecting the tire life.
2. Enhance operational stability
The wider tires with a 17.00-inch tread provide a larger contact area and effectively reduce the pressure per unit area . This helps prevent tilting and slipping during operation, and improves the stability and safety of the CASE721 on soft or uneven ground.
3. Improve passing ability
When paired with large-size tires (usually 23.5-25 or 20.5-25), the ground clearance is increased, which enhances the adaptability to rugged terrain. On muddy or gravel roads in gravel yards and mining areas, it can pass more smoothly and reduce the risk of getting stuck.
4. Maintenance and replacement are more versatile
17.00-25 is a common rim size standard for medium and large loaders. It is more convenient to replace tires and accessories and has strong compatibility. 1.7 indicates the rim flange height, which is suitable for standard tire structure and easy to maintain.
5. Adapt to various working conditions
Different tread types (L2, L3, L5) and carcass structures (bias, radial) can be selected according to actual working conditions, with good customization capabilities. It is not only suitable for construction sites, but also for material yards, forest farms, waste treatment and other environments.
The CASE721+17.00-25/1.7 rim is a medium-sized loader configuration that takes into account load-bearing, stability and adaptability. It is particularly suitable for high-intensity operation scenarios under medium loads. It is a cost-effective choice for users in mining construction, material yards, ports and other industries.
We have a research and development team composed of senior engineers and technical experts, focusing on the research and application of innovative technologies, and maintaining a leading position in the industry. We have established a complete after-sales service system to provide timely and efficient technical support and after-sales maintenance to ensure that customers have a smooth experience during use. We have more than 20 years of experience in wheel manufacturing. We are the original rim supplier in China for well-known brands such as Volvo, Caterpillar, Liebherr, John Deere, and JCB.
Our company is widely involved in the fields of engineering machinery, mining rims, forklift rims, industrial rims, agricultural rims, other rim components and tires.
The following are the various sizes of rims that our company can produce in different fields:
Engineering machinery size:
| 8.00-20 | 7.50-20 | 8.50-20 | 10.00-20 | 14.00-20 | 10.00-24 | 10.00-25 |
| 11.25-25 | 12.00-25 | 13.00-25 | 14.00-25 | 17.00-25 | 19.50-25 | 22.00-25 |
| 24.00-25 | 25.00-25 | 36.00-25 | 24.00-29 | 25.00-29 | 27.00-29 | 13.00-33 |
Mine rim size:
| 22.00-25 | 24.00-25 | 25.00-25 | 36.00-25 | 24.00-29 | 25.00-29 | 27.00-29 |
| 28.00-33 | 16.00-34 | 15.00-35 | 17.00-35 | 19.50-49 | 24.00-51 | 40.00-51 |
| 29.00-57 | 32.00-57 | 41.00-63 | 44.00-63 |
Forklift wheel rim size:
| 3.00-8 | 4.33-8 | 4.00-9 | 6.00-9 | 5.00-10 | 6.50-10 | 5.00-12 |
| 8.00-12 | 4.50-15 | 5.50-15 | 6.50-15 | 7.00-15 | 8.00-15 | 9.75-15 |
| 11.00-15 | 11.25-25 | 13.00-25 | 13.00-33 |
Industrial vehicle rim dimensions:
| 7.00-20 | 7.50-20 | 8.50-20 | 10.00-20 | 14.00-20 | 10.00-24 | 7.00x12 |
| 7.00x15 | 14x25 | 8.25x16.5 | 9.75x16.5 | 16x17 | 13x15.5 | 9x15.3 |
| 9x18 | 11x18 | 13x24 | 14x24 | DW14x24 | DW15x24 | 16x26 |
| DW25x26 | W14x28 | 15x28 | DW25x28 |
Agricultural machinery wheel rim size:
| 5.00x16 | 5.5x16 | 6.00-16 | 9x15.3 | 8LBx15 | 10LBx15 | 13x15.5 |
| 8.25x16.5 | 9.75x16.5 | 9x18 | 11x18 | W8x18 | W9x18 | 5.50x20 |
| W7x20 | W11x20 | W10x24 | W12x24 | 15x24 | 18x24 | DW18Lx24 |
| DW16x26 | DW20x26 | W10x28 | 14x28 | DW15x28 | DW25x28 | W14x30 |
| DW16x34 | W10x38 | DW16x38 | W8x42 | DD18Lx42 | DW23Bx42 | W8x44 |
| W13x46 | 10x48 | W12x48 | 15x10 | 16x5.5 | 16x6.0 |
We have more than 20 years of experience in wheel manufacturing. The quality of all our products has been recognized by global OEMs such as Caterpillar, Volvo, Liebherr, Doosan, John Deere, Linde, BYD, etc. Our products have world-class quality.
Post time: Aug-22-2025