· Product Overview

· Core Specifications

• Material: H62 BrassTensile strength ≥300 MPa, electrical conductivity ≥20 MS/m, and good corrosion resistance (suitable for dry/mild-moisture environments).
• Manufacturing Standard: ISO 9001-Certified
  • Key Processes: CNC Turning (outer diameter + inner bore + thickness) → Precision Drilling (inner bore refinement) → Surface Polishing (smooth shaft compatibility) → Dimensional Sorting.
  • Standard Size Range:
    • Outer Diameter: 10–20mm (multiple sizes included in set)
    • Inner Bore Diameter: 5–12mm (matched to common shaft sizes)
    • Thickness: 5–8mm (varied for load/space requirements)
  • Dimensional Tolerance: ±0.01mm (ensures tight shaft fit)
  • Surface Finish: Polished natural brass (smooth, low-friction, and visually consistent).

· Application Scenarios

• Mechanical Transmission Systems: Wear-resistant liners for rotating shafts, gearbox component support, or conveyor system shaft guides.
• Electrical Equipment: Conductive shaft sleeves, circuit board connection rings, or signal transmission components.
• Hydraulic/Pneumatic Systems: Low-friction seal bushings, small-diameter fluid line liners, or valve component guides.
• Instrumentation & Meters: Precision shaft positioning bushings, sensor component supports, or calibration device liners.

· Production Process Introduction

1. Raw Material Procurement: Source certified H62 brass round bars (compliant with material quality standards).
2. CNC Turning: Use high-precision CNC lathes to machine outer diameters, inner bores, and thicknesses for each size.
3. Inner Bore Refinement: Precision-drill and smooth inner bores to ensure low-friction shaft compatibility.
4. Surface Polishing: Buff outer/inner surfaces to achieve a smooth, consistent finish.
5. Dimensional Sorting: Group bushings by size and verify dimensional accuracy (via calipers/CMM).
6. Set Packaging: Assemble multi-size sets for customer convenience.

· Packaging and Shipping Methods

• Packaging:
  • Individual Sets: Each size is sealed in anti-scratch, anti-static plastic bags → packed in labeled cardboard boxes (marked with size specifications).
  • Bulk Orders: Multi-size sets are packed in foam-lined partitioned boxes (prevents collision/scratch damage) + reinforced outer packaging.
• Shipping Options:
  • Express Delivery (DHL/FedEx: 3–5 business days for sample sets).
  • Air Freight (7–10 business days for small-batch orders).
  • Sea Freight (20–25 business days for large-batch orders).All shipments include full tracking and damage insurance.

· Process

· Frequently Asked Questions (FAQ)

• MOQ (Minimum Order Quantity): 1,000 pieces (multi-size mixed batches are available for smaller volume needs).
• Lead Time: Standard lead time is 7–10 working days (includes CNC production and sorting); expedited production (5–7 working days) is available for urgent orders (additional fees apply).
• Customization Capability: Full customization is supported—adjust outer diameter, inner bore size, thickness, or add threaded features based on your shaft/assembly requirements. Our engineering team validates designs for fit and wear resistance.