What is a Cat 777 dump truck?
The CAT777 dump truck is a large and medium-sized rigid mining dump truck (Rigid Dump Truck) produced by Caterpillar. It is widely used in high-intensity operation scenarios such as open-pit mines, quarries, and heavy earthmoving projects.
The rigid frame and rear-dumping structure are used for long-distance, large-tonnage, high-frequency transportation of ore, coal, stone, and strippings . It is a classic model in Caterpillar's medium-tonnage mining truck series .
CAT777 dump truck has the following advantages in work:
1. High productivity
Can be used with CAT992K, 993K loaders or CAT6015, 6018 excavators for fast loading
Large tonnage and large capacity bucket, suitable for continuous high load operation
2. Strong reliability
Rigid frame structure is strong enough to withstand extreme terrain and frequent impacts
Caterpillar's autonomous power system is suitable for high altitude, high temperature and dusty environment
3. Easy maintenance
The equipment is equipped with ProductLink™ system, which can remotely monitor the status and warn of faults
Hydraulic system, electrical system, and power system are modularly designed, with high maintenance efficiency
4. Driving comfort
Equipped with a closed soundproof cab, air suspension seat, air conditioning, etc., to improve the operator's work efficiency and safety
As a medium-to-large rigid mining truck, the CAT 777 dump truck has very high requirements for tires and rims due to its high load capacity and harsh operating environment (such as open-pit mines and stone yards).
Our company has specially developed and designed 19.50-49/4.0, 5PC rims to match CAT 777 .
19.50-49/4.0 rim is a heavy-duty rim used on large engineering vehicles, commonly seen in open-pit mining transportation equipment . 19.50: rim width (inches), i.e. 19.5 inches; 49: rim diameter (inches), i.e. 49 inches; 4.0: flange base width ; 5PC: indicates that this rim is a 5-piece structure .
This type of rim has high structural strength: it is suitable for large rigid mining trucks with a load of more than 90 tons; the multi-piece design facilitates tire replacement and maintenance, reducing the cost of rim replacement; and has strong impact resistance: it is suitable for harsh mining environments, such as stone impact and heavy load vibration .
What are the advantages of using 19.50-49/4.0 rims on Cat 777 dump trucks?
CAT777 dump truck uses 19.50-49/4.0, 5PC rims, which are large rigid mining truck rims designed for ultra-heavy loads and harsh working conditions. This rim matches the CAT777's rated load of up to 85\~100 tons and the mining operating environment, and has the following advantages:
Five advantages of using 19.50-49/4.0 rims:
1. Match large-size mining truck tires to ensure load-bearing capacity
The 19.50-49 rim is a standard design for oversized tires such as 40.00R49 and 50/80R49;
Can support the load requirements of 100-ton vehicles;
Ensure that the tire body fits tightly with the rim, improving the stability and safety of the entire vehicle.
2.5-piece structure design (5PC) for easy maintenance and replacement
Includes: wheel base/bead seat + fixing ring + locking ring + bead + tightening ring;
The damaged parts or tires can be quickly replaced without removing the entire rim;
Reduce mine downtime and improve equipment availability.
3. High-strength steel and heat treatment process, strong durability
Made of high-strength steel and precision welded and heat-treated, it has strong impact resistance;
It can withstand vibration, load impact and rock impact in mining areas, extending the service life of the rim.
4. Strong corrosion resistance and adaptability
Suitable for extreme environments, such as high temperature, humidity, dust, saline-alkali land, etc.
The surface is mostly coated with anti-corrosion paint/electrophoretic coating to delay rust and improve durability.
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.
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: Jun-06-2025