· Product Overview

· Core Specifications

• Material: High-Grade Alloy Steel (Customizable to Stainless Steel or Other Alloys)Provides superior tensile strength, fatigue resistance, and compatibility with black oxide coating for enhanced durability.
• Manufacturing Standard: ISO 9001-Certified Precision CNC Machining Process
  • Dimensional Tolerance: ±0.02mm, ensuring seamless fit and reliable functionality between the shaft and sleeve.
  • Surface Finish: Black Oxide Coating – offers corrosion resistance, wear protection, and a sleek, uniform appearance.
  • Thread Specification: Customizable (Metric/Imperial) to meet assembly requirements.

· Application Scenarios

• Industrial Machinery & Automation: Integral to linear actuators, gearboxes, and robotic systems for precise motion control and power transmission.
• Automotive & Heavy Equipment: Used in drivetrain components, suspension systems, and engine sub-assemblies for torque transfer and structural support.
• Precision Instruments & Tools: Deployed in measuring equipment, surgical instruments, and custom tooling where dimensional consistency and corrosion resistance are critical.
• Fluid & Power Systems: Ideal for hydraulic and pneumatic cylinders, valves, and pumps for reliable component joining and operation.

· Production Process Introduction

1. Raw Material Sourcing: Procure certified alloy steel bars with uniform mechanical properties and composition.
2. Precision CNC Machining:
   • For the shaft: Utilize multi-axis CNC lathes to machine the long shaft, including threading and precision diameters.
   • For the sleeve: CNC mill and turn to create the precision bore, slots, and external features.
3. Black Oxide Treatment: Apply black oxide coating to both components for corrosion resistance, wear protection, and aesthetic uniformity.
4. Quality Inspection: Conduct CMM (Coordinate Measuring Machine) dimensional scans, thread integrity tests, and surface finish audits to ensure compliance with strict standards.
5. Packaging Preparation: The long shaft is secured in a custom foam-lined tube to prevent bending; the sleeve is wrapped in anti-scratch film. Both are packed in a rigid, labeled box for transit.

· Packaging and Shipping Methods

• Packaging: The long shaft is placed in a custom foam-lined tube to avoid deformation; the sleeve is wrapped in anti-scratch film. Both are packed in a sturdy box. For bulk orders, shafts are secured in partitioned tubes, and sleeves in trays.
• Shipping: We offer express delivery (DHL/FedEx/UPS), air freight, and sea freight. Shipping methods are tailored to order volume (noting the long shaft’s dimensions) and delivery timelines, with full tracking and damage insurance.

· Process

· Frequently Asked Questions (FAQ)

• MOQ (Minimum Order Quantity): MOQ is 100 sets (shaft + sleeve). Custom designs require a MOQ of 150 sets.
• Lead Time: Standard lead time is 10–18 working days after order confirmation. Expedited production is available for urgent orders with prior coordination and additional charges.
• Customization Capability: Full OEM/ODM customization is supported. We can modify shaft length, diameter, thread type, sleeve geometry, and material based on your technical drawings or samples. Our engineering team collaborates closely to deliver tailored solutions.