Q355B Heavy-Duty Rear Hub Disc

Q355B Heavy-Duty Rear Spoke Disc | High-Strength Steel Precision Formed Component with Full End-Face Inspection for Heavy-Load Anti-Deformation Applications

Attributes

MaterialCarbon Steel
Thickness5mm
CoatingNone
SizeØ517×H218
Forming ProcessIntegrated Blanking + Precision Forming
ApplicationConveyor Drum / Heavy-Duty Bulk Material Handling Systems
Structure TypeReinforced Closed-End Rear Spoke Structure
Industry ApplicationsMining / Port Handling / Bulk Conveying Equipment
Geometric Tolerance StandardGB/T 1184-K
End-Face Flatness≤0.1 mm/m
Yield Strength≥355 MPa
Surface TreatmentDual-Side Grinding Deburring
Edge TreatmentRadius Edge Conditioning
Surface ConditionOxide-Scale-Free / Corrosion-Free

Core Process

The rear-side reinforced closed-end structure is manufactured using integrated blanking and precision forming processes.

Utilizing the high yield strength characteristics of Q355B structural steel, the component is engineered to provide maximum structural reinforcement for heavy-duty drum systems.

The process ensures excellent resistance against deformation and cracking during full-load startup, continuous heavy-load operation, and emergency braking conditions.

Precision Control

Geometric tolerances are controlled in strict accordance with GB/T 1184-K standards.

Dedicated inspection procedures are implemented for spoke disc end-face runout to ensure:

End-face flatness maintained within 0.1 mm/m
Stable rotational balance and assembly alignment
Reliable structural performance under dynamic loading conditions

Surface Treatment

All components undergo strict deburring and edge-conditioning processes.

A dual-side grinding deburring system is applied to:

Remove burrs and sharp edges
Eliminate stress concentration risks through controlled edge radiusing
Ensure oxide-scale-free and corrosion-free end surfaces

The finished surface provides improved fatigue resistance and long-term operational durability.

Material Adaptability

Manufactured from certified Q355B high-strength structural steel in compliance with GB/T 1591 standards.

Material sourcing and mechanical properties are strictly controlled to ensure:

Yield Strength ≥355 MPa
Excellent structural rigidity and impact resistance
Reliable performance in mining, port handling, and heavy-duty bulk conveying systems

The component is specifically engineered for harsh heavy-load operating environments requiring long-term dimensional stability and structural reliability.