The bead lock is a crucial component in multi-piece rims (2-piece, 3-piece, and 5-piece), used to firmly "lock" the tire bead onto the rim, ensuring the tire operates safely and stably under high load, high pressure, and impact conditions.
It is usually made of high-strength steel and installed in the lock ring groove . It uses an elastic structure to lock and fix the retaining ring or seat ring, forming a safe locking structure.
The core functions of the locking ring are mainly the following four points:
1. Lock the tire bead to prevent the tire from slipping off the rim :
In high-load, high-pressure OTR and mining vehicles, the tire bead is subjected to enormous outward expansion forces. The locking bead ensures that the tire bead is firmly locked onto the bead seat and will not come loose due to impact or changes in tire pressure.
Without bead lock , tires may come off the bead , leak air , damage the bead , or cause serious safety accidents under heavy loads .
2. Provides uniform bead clamping force, improving sealing performance :
The locking ring and side ring work together to press the tire bead firmly against the rim shoulder, forming a sealed structure. This is especially important for tubeless (TL) tires , as it makes the bead seal more stable , prevents air leakage , and maintains normal tire pressure and load-bearing capacity .
3. Absorbs impact force, improving system durability :
In mining vehicles, tires frequently experience extreme impacts. Bead locks effectively disperse impact stress , prevent bead "creep , " avoid wear on the bead seat , and extend the life of both the rim and the tire .
This is one of the key reasons why multi-piece rims are more durable than one-piece structures.
4. Facilitates tire installation and removal, improving maintenance efficiency :
The lock ring is designed as a detachable structure, making tire replacement more convenient and quicker , ensuring safer assembly of high-tonnage tires , and significantly improving maintenance efficiency compared to a one-piece design .
For 45–63 inch mining truck tires, rim locks are an essential feature.
HYWG is one of the few companies in China capable of producing wheel rims across the entire industry chain, from steel to finished product . It possesses a complete industrial chain encompassing steel rolling, mold design, high-precision forming, automated welding, surface treatment, and finished product inspection. HYWG utilizes its independently developed high-strength steel to roll side rings and locking rings, enhancing locking strength and fatigue life.
This "one-stop" production model ensures that all products meet the same high standards, truly realizing full-chain manufacturing and quality control of wheel rims.
HYWG uses high-precision machining centers to ensure a smooth fit of the locking rings without stress concentration. Strict tolerance control is required for the locking ring grooves, end faces, and side ring fits.
, bending fatigue testing , and assembly strength testing during the overall rim testing , ensuring reliability under operating conditions of 40–100+ tons.
the rim lock is to firmly lock the tire bead onto the rim, ensuring safety, sealing, and durability under high load and strong impact conditions. It is one of the most critical safety components of multi-piece rims.
HYWG rim locks are built with high-strength steel, precision molding, and rigorous testing to create an industry-leading safety locking system, providing more reliable, durable, and safer rim solutions for mining and engineering equipment worldwide.
Securely lock the tire bead to prevent the risk of it coming off.
Precise fit with side rings ensures a perfect seal.
Withstands extremely high loads and adapts to harsh mining conditions
Extend rim life and reduce maintenance costs
A safer disassembly and assembly structure makes every maintenance efficient and controllable.
From 25 inches to 63 inches, from loaders to mining dump trucks, HYWG rim locks consistently provide unbreakable security for every heavy-duty piece of equipment with its world-leading manufacturing capabilities and stringent quality standards.
HYWG's products not only hold a significant market share in China but are also exported to more than ten mining-developed regions, including North America, Europe, Australia, and Russia. With leading manufacturing capabilities, rigorous quality control, and a global service system, we provide reliable wheel rim solutions for our customers. We are an original equipment manufacturer (OEM) wheel rim supplier in China for renowned brands such as Volvo, Caterpillar, Liebherr, and John Deere .
Post time: Dec-15-2025