· Product Overview

· Core Specifications

• Material: 304 Stainless Steel (316 Stainless Steel optional for harsh/sterile environments)Offers high tensile strength (≥515 MPa), excellent corrosion resistance (passivated finish), and fatigue resistance for continuous load cycles.
• Manufacturing Standard: ISO 9001-Certified Precision CNC Turn-Mill Process
  • Key Processes: CNC turning (outer stepped profile + internal concentric sleeve) → Milling (radial set screw holes) → Surface passivation (rust protection) → Deburring (smooth mating surfaces).
  • Key Parameters:
    • Shaft Compatibility: 10–25mm (customizable to specific shaft diameters)
    • Dimensional Tolerance: ±0.01mm (ensures concentric shaft alignment)
    • Load Capacity: Up to 150 N·m (varies by shaft size)
    • Set Screw Spec: M4–M6 (metric; locked via hex key)

· Application Scenarios

• Industrial Automation: Robotic arm actuator shaft couplings, conveyor drive system pulley mounts, and gearbox shaft connections.
• Precision Machinery: CNC router spindle hubs, 3D printer extruder drive couplings, and lathe tool holder mounts.
• Aerospace & Defense: Small-scale vehicle drive shaft components and avionic sensor actuator couplings.
• Heavy-Duty Equipment: Hydraulic pump shaft mounts and manufacturing line mechanical part couplings.
• Medical Machinery: Sterile 316 stainless steel versions for diagnostic equipment drive systems.

· Production Process Introduction

1. Raw Material Sourcing: Procure certified 304 stainless steel bars (metallurgically tested for strength and corrosion resistance).
2. CNC Turn-Mill Machining:
   • Shape the outer stepped cylindrical body and internal concentric sleeve via precision CNC turning.
   • Mill radial holes for set screws (aligned to ensure uniform shaft grip).
3. Surface Passivation: Apply a chemical treatment to enhance the stainless steel’s natural rust resistance.
4. Deburring & Finishing: Remove sharp edges (for safe assembly) and polish internal sleeve surfaces (for smooth shaft insertion).
5. Quality Inspection: Conduct CMM (Coordinate Measuring Machine) scans (concentricity + dimensional accuracy) + torque load testing.
6. Packaging Preparation: Wrap the hub to protect the passivated surface.

· Packaging and Shipping Methods

• Packaging: Individual hubs are sealed in anti-scratch, dust-proof plastic bags; bulk orders are packed in foam-lined partitioned boxes (prevents deformation and surface damage during transit).
• Shipping: Flexible logistics options:
  • Express Delivery (DHL/FedEx/UPS: 3–5 business days)
  • Air Freight (7–10 business days)
  • Sea Freight (20–30 business days)All shipments include full tracking and damage insurance.

· Process

· Frequently Asked Questions (FAQ)

• MOQ (Minimum Order Quantity): 100 pieces per shaft size specification; small sample packs (5–10 pieces) are available for fit/torque testing.
• Lead Time: Standard lead time is 7–12 working days after order confirmation; expedited production (5–7 working days) is available for urgent orders (additional fees apply).
• Customization Capability: Full customization is supported—we can adjust shaft compatibility size, add more set screws (for higher grip), modify outer profile dimensions, or switch to 316 stainless steel (for harsh environments) based on your technical drawings. Our engineering team will validate design feasibility for torque load performance.