· Product Overview

• A stepped cylindrical profile (for multi-diameter assembly compatibility)
• A flange (for axial load support and stable mounting)
• A side set-screw hole (to lock the bushing onto shafts)
• Internal threads (for secure connection to mating components)CNC-machined to ultra-tight tolerances and finished with a passivated polished surface, these bushings deliver consistent fit, durability, and corrosion resistance—ideal for precision industrial and instrumentation applications.

· Core Specifications

• Material: 304 Stainless SteelFood-safe (FDA 21 CFR 175.300 compliant), corrosion-resistant (72-hour salt spray test passed), tensile strength ≥515 MPa.
• Manufacturing Standard: ISO 9001-Certified
  • Key Processes: CNC Turning (stepped profile + flange) → Precision Tapping (internal threads + side set-screw hole) → Deburring → Surface Passivation.
  • Standard Parameters:
    • Internal Thread: M6 (customizable to Metric/Imperial specs)
    • Side Set-Screw Hole: M3 (for shaft locking)
    • Stepped Outer Diameters: 15mm/12mm (customizable to assembly needs)
    • Dimensional Tolerance: ±0.02mm (ensures precise shaft/mating component fit)
  • Surface Finish: Passivated polished (non-porous, scratch-resistant, and rust-proof).

· Application Scenarios

• Industrial Automation: Conveyor system shaft guides, robotic joint shaft bushings, or gearbox component mounts.
• Pneumatic/Hydraulic Equipment: Valve component connectors, cylinder shaft positioning bushings, or fluid line interface parts.
• Precision Instrumentation: Analytical device shaft supports, sensor mounting bushings, or calibration equipment components.
• Food & Beverage Processing: Sanitary shaft bushings (304 SS meets food-contact standards) for packaging machine components.

· Production Process Introduction

1. Raw Material Sourcing: Procure certified 304 stainless steel round bars (traceable to quality standards).
2. CNC Turning: Use high-precision CNC lathes to machine the stepped cylindrical profile, flange, and internal bore.
3. Precision Tapping: Drill and tap the internal threads (for component connection) and side set-screw hole (for shaft locking).
4. Deburring & Finishing: Remove sharp edges from threads, holes, and stepped transitions (prevents assembly damage).
5. Surface Passivation: Apply a chemical passivation treatment to enhance 304 SS’s natural corrosion resistance.
6. Quality Inspection: Verify dimensional accuracy (CMM scans), thread fit (thread gauges), and passivation integrity → pair bushings for consistent assembly.

· Packaging and Shipping Methods

• Packaging:
  • Individual Pairs: Wrapped in anti-scratch protective film + sealed in moisture-proof plastic bags (marked “Paired Shaft Bushings”).
  • Bulk Orders: Packed in foam-lined partitioned boxes (prevents thread deformation, hole damage, and surface scratches) + moisture-absorbing desiccants.
• Shipping Options:
  • Express Delivery (DHL/FedEx: 3–5 business days for sample pairs).
  • Air Freight (7–10 business days for small-batch production).
  • Sea Freight (20–25 business days for bulk orders).All shipments include full tracking and damage insurance.

· Process

· Frequently Asked Questions (FAQ)

• MOQ (Minimum Order Quantity): 500 paired sets for standard configurations; 200 pairs for custom designs (with valid technical drawings).
• Lead Time: Standard lead time is 7–10 working days (includes CNC machining and passivation); expedited production (5–7 working days) is available for urgent orders (additional fees apply).
• Customization Capability: Full customization is supported—adjust stepped diameters, thread specs, flange size, or switch to 316 stainless steel (for extreme corrosion environments) based on your requirements. Our engineering team validates designs for fit and load-bearing performance.