Rear Cone

Seamless Metal Spinning Rear Cone for Grain Conveying Systems

1. Product Overview

• Industry: Agricultural Machinery / Bulk Material Handling
• Component: Rear Cone / Conveyor End Cone
• Process: CNC Metal Spinning (Seamless Cold Forming)

2. Material Specification

• Material: Q235B Carbon Steel (GB/T 700-2006)
• Yield Strength: ≥235 MPa
• Tensile Strength: 370–500 MPa
• Elongation: ≥26%
• Density: 7.85 g/cm³

3. Dimensions & Tolerances

• OD: Ø625 mm × H171 mm
• Thickness: 4.0 mm ±0.15 mm
• Roundness: ≤0.3 mm
• Perpendicularity: ≤0.2 mm/m
• Surface Roughness: Ra ≤1.6 μm

4. Manufacturing Process

Core Process: CNC Metal Spinning (CNC1250 lathe)

• Spindle Speed: 500–900 rpm
• Feed Rate: 4–8 mm/s
• Controlled Deformation: 3.8–4.2 mm

Process Flow:
Blank → Leveling → CNC Spinning → Deburring → Cleaning → Inspection

Key Feature:
✔ Seamless one-piece forming (no weld seam)
✔ Stable wall thickness control
✔ High impact resistance for agricultural environments

5. Quality Control

• System: ISO 9001:2015

Inspection Includes:

• Chemical composition (C ≤0.22%, Mn ≤1.4%)
• Ultrasonic defect detection
• CMM dimensional control
• Full wall thickness inspection (±0.01 mm)
• Final inspection (GB/T 2828.1, AQL 2.5)

6. Production & Delivery

• Capacity: 50 pcs/day
• Lead Time: 5–8 working days

Packaging: Anti-rust + EPE foam + wooden pallet
Delivery: 3–6 days domestic logistics

7. Applications

• Grain harvesters
• Agricultural conveyor systems
• Crop processing equipment

Function:

• Material guiding & discharge control
• Anti-clogging flow stabilization
• Protection of conveyor end structure

8. Extended Applications

• Mining conveyor systems
• Construction waste handling
• Forestry machinery

9. Operating Conditions

• Temperature: -20°C to 120°C
• Load: ≤1.0 MPa
• Environment: Dusty / humid / high vibration

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