· Product Overview

· Core Specifications

Material & Process Standards

• Raw Material: 304 Stainless Steel (general industrial grade) or 316 Stainless Steel (corrosion-resistant grade), offering excellent machinability, tensile strength, and resistance to harsh chemicals
• Processing Technology: Precision CNC turning, one-piece forming, and precision threading for seamless integration
• Precision Tolerance: ±0.005mm for critical dimensions, ensuring perfect alignment with shafts and mating components
• Surface Finish: Precision polished finish (Ra ≤ 0.8μm), with optional passivation or electropolishing for enhanced corrosion resistance
• Structural Features: Multi-step cylindrical profile, precision internal bore, and external threaded end for secure mounting
• Quality Certification: ISO 9001 certified, with full dimensional inspection via CMM (Coordinate Measuring Machine)

· Application Scenarios

• Industrial Automation: Linear motion systems, robotic arm bearings, and conveyor system guide sleeves
• Fluid Handling Equipment: Pump and valve components, fluid transfer sleeves, and hydraulic/pneumatic system seals
• Medical Devices: Surgical instrument bearings, diagnostic equipment components, and implantable device housings
• Marine & Offshore: Subsea equipment bearings, corrosion-resistant fluid transfer sleeves, and offshore platform components
• Aerospace: Lightweight bearing components for aircraft systems, UAV linear motion parts, and satellite equipment

· Production Process Introduction

1. Raw Material Preparation: Cut 304/316 stainless steel bars to the required dimensions
2. CNC Rough Turning: Remove excess material to form the basic cylindrical profile
3. Precision Finishing: Turn the multi-step structure, internal bore, and external threads with tight tolerances
4. Deburring & Polishing: Remove all sharp edges and burrs, and polish critical surfaces to ensure smooth operation
5. Surface Treatment (Optional): Apply passivation or electropolishing for enhanced corrosion resistance
6. Quality Inspection: Use CMM to verify dimensions, bore concentricity, and thread fit
7. Cleaning & Packaging: Ultrasonically clean the sleeve to remove machining debris, then package for shipment

· Packaging and Shipping Methods

Packaging

• Individual Sleeve: Wrapped in anti-static PE bags and protected with foam padding to prevent scratches and deformation
• Bulk Orders: Packed in foam-lined partitioned cartons to avoid friction and damage between parts
• Outer Packaging: Export-grade moisture-proof and shock-proof corrugated boxes, suitable for long-distance international transportation

Shipping Methods

• Express Delivery (DHL/FedEx/UPS): 3–7 working days for samples, prototypes, and small-batch urgent orders
• Air Freight: 7–15 working days for medium-batch production runs
• Sea Freight: 20–35 working days for large-volume bulk orders
• All shipments include real-time tracking and reinforced packaging for precision components

· Process

· Frequently Asked Questions (FAQ)

• MOQ (Minimum Order Quantity): 100 pieces for standard configurations; 10–50 pieces for prototype/sample orders (sample fee applicable)
• Lead Time: 5–10 working days for prototypes; 10–15 working days for standard production; 15–25 working days for large custom orders (expedited production available for urgent needs)
• Customization Capability: Full customization is supported—adjust dimensions, bore size, thread specs, material grade (304/316), and surface finish (passivation, electropolishing). We accept production based on your 2D drawings (PDF/DXF) or 3D files (STEP/IGS).