The locking ring is a key safety component in multi-piece engineering machinery wheel rims. Its core function is to reliably lock the tire bead under high load and high tire pressure conditions, ensuring a safe connection between the tire and the rim throughout its entire lifespan.
The four most essential uses of a lock ring :
1. Lock the tire bead to prevent it from coming off the bead.
The locking ring securely presses the tire bead into the bead seat , preventing bead displacement under heavy loads, steering, and lateral forces . It is especially suitable for high-impact applications such as loaders and mining trucks ; without the locking ring, multi-piece rims cannot be used safely.
2. Bear and transmit tire pressure load
After the tire is inflated, the tire pressure will generate a huge axial thrust . The locking ring and flange jointly bear the separation force generated by the tire pressure , ensuring that the rim structure does not separate or fail under high tire pressure .
3. Facilitates tire installation and removal
Multi-piece rims achieve a "detachable structure" through locking rings , making outdoor on-site maintenance more convenient . Tires can be disassembled and assembled on-site in mining areas or construction sites , without relying on large specialized tire mounting equipment . Damaged components such as locking rings and retaining rings can be replaced individually , reducing the need for entire rims to be returned to the factory or scrapped . Maintenance costs are also lower .
4. Enhance the overall structural safety margin
A well-designed locking groove and cross-sectional shape can disperse local stress, reduce flange fatigue , and improve the reliability of the wheel rim under long-term dynamic loads .
Lock rings are typically found on 3-piece and 5-piece rims .
Using poor-quality rim lock rings can pose extremely high safety risks, such as rim lock ring ejection , loose tire bead, air leakage , and rim edge deformation leading to abnormal tire wear or even tire blowout . In the field of construction machinery, rim lock rings are components that are strictly treated as safety parts.
Although the wheel rim is not the largest component, it is a core component that determines the safety and reliability of the entire wheel system.
With over two decades of dedicated experience and a mature OTR rim manufacturing system, HYWG independently produces high-reliability rim locks and other rim accessories , providing stable, reliable, and sustainable support for the entire wheel system.
HYWG rim accessories are designed and manufactured on the same production line as the rim body, ensuring high dimensional accuracy and strong compatibility. This avoids assembly problems caused by inconsistent accessories and ensures reliable bead locking and even force distribution.
HYWG wheel rims are made of high-strength special steel produced in-house , combined with mature heat treatment and forming processes, giving them excellent impact resistance , outstanding fatigue resistance and stable long-term structural strength .
It maintains reliable performance even under high load, strong impact, and frequent start-stop conditions.
Reduce maintenance costs and extend service life . The advantages of multi-piece rims rely heavily on high-quality components. HYWG components support individual replacement , reducing the need for complete rim replacements , shortening downtime , and significantly lowering the total life cycle cost (TCO) .
As one of the world's top three OTR heavy-duty wheel rim manufacturers, HYWG possesses the capability to independently produce rim steel profiles , utilizing its own high-strength specialty steel . This ensures that its products outperform ordinary standard rims in terms of concentricity , fatigue resistance , weld strength , and service life . The high-strength, high-quality steel, combined with advanced heat treatment processes, gives the rims excellent impact resistance and fatigue resistance.
From material selection to welding, HYWG boasts a "one-stop" production model . From steel rolling, mold design, high-precision forming, automated welding to surface treatment and finished product inspection , from raw materials to finished products, every step is controlled and rigorously tested to ensure that all products meet uniform high standards and guarantee long-term continuous operation reliability .
1.Billet
2.Hot Rolling
3. Accessories Production
4. Finished Product Assembly
5.Painting
6. Finished Product
HYWG's comprehensive after-sales service system provides timely and efficient technical support and maintenance. Every step of the rim manufacturing process strictly adheres to high-standard quality inspection procedures to ensure that every rim meets international quality standards and customer requirements. We are an original equipment manufacturer (OEM) rim supplier in China for well-known brands such as Volvo, Caterpillar, Liebherr, and John Deere .
HYWG 's products are exported to more than ten countries, including North America, Europe, Australia, and Russia . It is a trusted partner for OTR users worldwide .
Post time: Feb-24-2026