End Socket

Application – Spun End Closures for Mechanical Systems

This precision metal spun copper end socket is designed for mechanical end closures, pressure sealing, and protective housings in hydraulic cylinders, gearboxes, pipelines, and compressor systems.
Engineered for high load, thermal conduction, and corrosion-resistant environments.

Material – T2 High-Conductivity Copper (Spinning Grade)

Manufactured from T2 copper (≥99.9% Cu, GB/T 5231-2012), optimized for metal spinning formability and conductivity performance.

• Electrical conductivity: ≥98% IACS
• Tensile strength: ≥205 MPa
• Yield strength: ≥60 MPa
• Elongation: ≥30% (excellent for spinning deformation)
• Density: 8.96 g/cm³

Provides excellent ductility for deep spinning + superior thermal/electrical performance.

Geometry & Spinning Accuracy

• Diameter: Ø815 mm
• Height: 132 mm
• Wall thickness: 8.0 mm (±0.15 mm)
• Roundness: ≤0.3 mm
• Perpendicularity: ≤0.2 mm/m
• Surface roughness: Ra ≤1.6 μm
• Standard: GB/T 1804-m

Ensures high precision for mechanical sealing interfaces and assembly alignment.

Core Manufacturing Process – CNC Metal Spinning + Secondary Machining

1. CNC Metal Spinning (Primary Forming)

Formed using large-diameter CNC spinning lathe (KMS-1200) with controlled plastic deformation:

• Spindle speed: 400–800 rpm
• Roller feed rate: 3–8 mm/s
• Incremental reduction (per pass): 0.8–1.2 mm
• Total wall reduction: 7–8 mm

Process Characteristics:

• Axisymmetric near-net shape forming
• Uniform wall thickness distribution
• Controlled material flow with minimal thinning
• Reduced residual stress vs welded fabrication

2. CNC Machining (Critical Features)

• Machining of sealing faces and interfaces
• Cutting speed: 150–200 m/min
• Feed: 0.1–0.2 mm/rev
• Flatness of sealing surface: ≤0.1 mm/m

Ensures tight sealing performance and dimensional repeatability.

3. Pre- & Post-Spinning Treatment

Pre-treatment:
Degreasing → neutralization → drying → precision leveling (≤0.2 mm/m)

Post-processing:

• Mechanical deburring (high-speed abrasive finishing)
• Edge radiusing (R ≥2.5 mm)
• Surface polishing (Ra ≤1.6 μm)
• High-pressure air cleaning

Process Control – Closed-Loop Spinning Precision

• Real-time monitoring of diameter, height, wall thickness (15 Hz sampling)
• CNC path control via CAD/CAM (UG / G-code)
• Ultrasonic wall thickness measurement (±0.01 mm)
• CMM dimensional verification (±0.005 mm)

Ensures repeatable precision for large copper spun components.

Quality Assurance – NDT & Full Traceability

• ISO 9001:2015 certified manufacturing
• Spectrometer analysis (Cu ≥99.90%)
• Ultrasonic testing (no internal defects)
• X-ray RT inspection (JB/T 4730.2 Level II)
• Surface inspection (20× magnification, defect-free)
• AQL 2.5 final inspection

Each component includes full traceability (material batch + process data + operator tracking).

Performance Characteristics

• Operating temperature: -20°C to 250°C
• Pressure rating: ≤2.5 MPa
• Media compatibility: hydraulic oil, lubricants, industrial fluids

Engineering Advantages of Spun Copper End Caps:

• Seamless structure (no weld-induced defects)
• Superior sealing integrity
• High thermal conductivity for heat dissipation
• Enhanced fatigue resistance under cyclic loads

Production Capacity & Lead Time

• Monthly capacity: up to 900 pcs
• Small batch: 8–12 days
• Mass production: 15–22 days
• Urgent orders: 5–7 days

Custom Metal Spinning Capability

• Diameter range: Ø300–1200 mm
• Height range: 50–300 mm
• Material options: T2 / T3 / TP2 copper
• Connection types: flange / threaded / custom interface

Supports OEM design based on pressure, sealing, and mechanical interface requirements.

Application Scenarios

Core Applications

• Hydraulic cylinder end closures
• Gearbox and compressor housings
• Industrial pipeline end caps
• Pressure vessel auxiliary components

Extended Applications

• New energy equipment (thermal management housings)
• Marine machinery (corrosion-resistant copper parts)
• Precision equipment dust-proof covers
• Mining machinery heavy-duty end caps

Engineering Value – Why Metal Spinning Over Fabrication

Compared with welded or cast components:

• No weld seams → eliminates leakage risk
• Better grain flow alignment → improved strength
• Lower material waste vs machining-from-solid
• Higher concentricity for rotating/mechanical systems

After-Sales & Engineering Support

• 24-month warranty
• Free replacement for dimensional or process defects
• Technical documentation (drawings, material certs, QC reports)
• 24h response, 1–3 day engineering solution
• Long-term refurbishment and maintenance services

Get a Quote

• Precision Custom Metal Spinning Parts
• 👉 Upload your drawings and receive a quotation within 24 hours.