Truck Bolt DXTB201 M20x65/M22x65

Truck bolts: the "steel joints" of heavy traffic
Within the massive body of a truck, thousands of seemingly inconspicuous bolts are in fact the core elements that ensure the vehicle's safety, reliability, and efficient operation. Far from being mere connectors, these bolts serve as "steel joints" with multiple critical functions, and their performance directly impacts the truck's lifeline.
Function 1: High-Strength Connection and Structural Integration
The core components of a truck, such as the frame (beam), engine, transmission, axle, suspension system, and cargo box, all require extremely stable connections. High-strength bolts precisely and firmly integrate these massive parts into a single unit. For instance, the U-bolts connecting the axle to the leaf springs bear the full impact and vibration from the road and load, while the bolts securing the engine to the frame must withstand the immense torque generated during operation. These connections must not only ensure stability under static conditions but also endure long-term dynamic loads, preventing catastrophic consequences from loosening or fatigue fractures.
Function 2: Transmitting Power and Load
Bolts play a critical role in power transmission within trucks. At the hub position, hub bolts firmly secure the wheel to the axle, ensuring the engine's power is effectively transferred to the tire while bearing the vehicle's weight and braking torque. At the transmission shaft flange, high-strength bolts transmit the enormous torque from the gearbox output to the drive axle. These bolts operate under combined shear and tensile forces, requiring precise calculation of their strength grade and preload. Any failure could directly lead to vehicle breakdown or loss of control.

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