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Pivot Mount Bracket

The electric bus pivot mount bracket is a core safety component that ensures the vehicle’s straight-line driving stability and steering return performance. Simply put, it serves as the physical carrier for the critical alignment parameter known as the kingpin inclination angle, forming t...

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The electric bus pivot mount bracket is a core safety component that ensures the vehicle's straight-line driving stability and steering return performance.

Simply put, it serves as the physical carrier for the critical alignment parameter known as the kingpin inclination angle, forming the foundation of the vehicle's high-speed stability, steering feel, braking safety, and tire economy. Its design must meet the requirements of high strength, high toughness, long service life, and maintenance-free operation to address the unique challenges posed by the weight, power, and smoothness of electric buses.

The electric bus pivot mount bracket we manufacture is made of chromium-molybdenum steel 4140, characterized by high strength, high toughness, and excellent fatigue strength, with a blackened surface treatment for rust prevention.

Material Composition and Mechanical Performance Parameters:

1.Chrome-molybdenum steel 4140 Composition Table

Chemical Composition
Elements	C	Mn	Si	Cr	Mo	P	S	Fe
Percentage(WT%)	0.38-0.43	0.75-1.00	0.15-0.35	0.80-1.10	0.15-0.25	≤0.035	≤0.040	Bal.

2.Mechanical Properties

(1).Tensile Strength (T.S): ≥650 MPa

(2).Yield Strength (Y.S): ≥400 MPa

(3).Elongation (E.L): ≥16%

(4).Brinell Hardness (HB): ≤ 217

Manufacturing Process:

Processing using 42CrMo steel plate.

Step 1: Use a vertical machining center to mill the outer side profile of the product and achieve the total width.

Step 2: Clamp the product vertically to machine holes and chamfer the product edges.

Step 3: Flip the product 180° to machine stepped holes.

Step 4: Use a CNC lathe with specialized clamping fixtures to machine inclined holes.

Customized plug gauges are used to detect the size of inclined holes

The surface treatment is blackened for rust prevention

Packaging

After all tests are completed and passed, we will package and ship the products.

We will continuously track orders and follow up with customers, providing the most professional after-sales service, and constantly paying attention to customer suggestions and new needs. Customer feedback.

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Products

Foundry Industry Innovation and Development Forum (September 2024)

Shanghai International Foundry Exhibition (2025)

Russian customers visit (2023)

British customers visiting in 2025

2024 Shanghai Industrial Expo

Investment casting

Pivot Mount Bracket

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