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Precision CNC Milling from China Custom Broaching for Aluminium CNC Machining
OEM
Precision China CNC milling for custom metal & plastic parts. Competitive pricing, tight tolerances, fast delivery. Request a quote.
minimum order
1 piece
Quantity
$5.00 - $5.00 / piece
Precision China CNC milling for custom metal & plastic parts. Competitive pricing, tight tolerances, fast delivery. Request a quote.
| Key Attributes | |
| Machining Capabilities | CNC Machining Processes:Broaching, Drilling, Etching/Chemical Machining, Laser Machining, Milling, Turning, Wire EDM, Rapid Prototyping |
| Materials Supported | Aluminum, Brass, Bronze, Copper, Hardened Metals, Stainless Steel, Steel Alloys, Plastic |
| Micro-Machining or Not | Micro Machining |
| Key Processes | CNC Milling, Turning, Drilling |
| Tolerance Standards | Industry-standard precision |
| Surface Treatments | Anodizing, Plasting, Polishing, etc. |
| Applications | Control Systems, Automotive Components |
| Place of Origin | Guangdong, China |
| Model Number | CUSTOM |
| Service Type | Customized OEM/ODM Manufacturing |
| Drawing Formats | PDF, CAD, IGES, STEP |
| Delivery Time | 7-30 Days |
| MOQ | 10 pcs |
· Product Overview
Introducing the YITECH Precision Inertial Mounting Disc — a high-rigidity, CNC-turned rotary component engineered for optical systems, servo motors, robotics, and precision instrumentation.
This disc delivers:
- Triangular 3-hole hub (M3/M4 standard) for balanced, vibration-resistant mounting
- Stepped concentric geometry: Hub (Ø22 mm) → Shoulder (Ø30 mm) → Rim (Ø60 mm) — ensures axial location and torsional stiffness
- Solid billet construction (A6061-T6 aluminum or 304 stainless steel) — zero warpage, ±0.005 mm dimensional control
- Mirror-finish turning (Ra ≤ 0.5 μm) — smooth rotation, minimal wear, and optical neutrality
- Dynamic balance certified (G2.5 per ISO 1940-1) — suitable for speeds up to 10,000 RPM
Unlike cast or stamped discs, this part guarantees runout ≤ 0.01 mm and mass symmetry within ±0.5% — essential when imbalance causes vibration, noise, or premature bearing failure.
Ideal for engineers building compact, high-performance rotary subsystems where every gram and micron counts.
· Core Specifications
| Parameter | Specification |
|---|---|
| Material Options | • A6061-T6 Aluminum (lightweight, non-magnetic, anodizable) • AISI 304 Stainless Steel (corrosion-resistant, higher density) • AISI 4140 Alloy Steel (high-inertia, for torque-critical apps) |
| Surface Finish | Turned satin (standard, Ra ≤ 0.5 μm); optional: Black anodize (Type II), PVD TiN, or passivated SS |
| Overall Dimensions | Ø60 mm (outer rim) × Ø22 mm (hub) × Thickness = 8.0 mm (standard); customizable: Ø40–120 mm × Hub Ø15–40 mm × Thickness 5–20 mm |
| Hub Features | 3× M3 threaded holes (120° spacing, depth = 5 mm); optional: M4, blind holes, or smooth-through |
| Shoulder | Stepped diameter: Ø30 mm (standard); acts as axial stop & stress reliever |
| Tolerances | • Outer OD: ±0.005 mm • Hub bore concentricity to OD: ≤ 0.008 mm TIR • Thickness: ±0.02 mm • Hole position (X/Y): ±0.01 mm |
| Manufacturing Process | Precision CNC turning (lathe) → facing → drilling/tapping → deburring → balancing → surface treatment |
| Weight | ~115 g (Al, standard); ~285 g (304 SS) |
| Max Speed | 10,000 RPM (balanced, Al); 6,000 RPM (SS, due to higher mass) |
| Inertia (Jz) | 1.85 × 10⁻⁵ kg·m² (Al, standard) — calculable for custom sizes |
| Operating Temp. | -40°C to +120°C (Al); -60°C to +250°C (304 SS) |
| Compliance | ISO 9001, RoHS, REACH, FDA-compliant (for medical-grade variants) |
· Application Scenarios
This disc excels in high-precision rotary and structural integration:
- Optical Systems & Laser Benches
→ Mounting flange for lenses, filters, beam splitters, or mirrors
→ Triangular holes ensure repeatable angular alignment (±0.1°)
→ Non-reflective finish reduces stray light - Servo Motors & Robotics
→ Inertial mass for torque smoothing and vibration damping
→ Direct-mount to motor shaft (via hub) for minimal backlash - CNC & Metrology Equipment
→ Rotary reference disc for encoder calibration or tool setting
→ Stepped shoulder provides precise axial location - Medical Devices
→ Structural ring for centrifuges, imaging gantries, or surgical robots
→ Non-magnetic (Al) or biocompatible (304 SS) options available - Aerospace & Defense
→ Inertial reference for INS modules or gimbal systems
→ Vibration-resistant design meets MIL-STD-810G shock specs
💡 Why engineers choose this disc:
- 3-hole symmetry = balanced mounting — eliminates rotational wobble
- Stepped design = axial precision — no need for shims or spacers
- Solid billet = no hidden defects — critical for high-reliability systems
- Customizable in days — not weeks like traditional machining
· Production Process Introduction
· Packaging and Shipping Methods
- Standard Packaging: 1 disc per anti-static PE bag; 50 discs per EPE tray; 500 discs per cardboard box.
- Bulk Options: 1,000–10,000+ units per pallet (custom tray inserts available).
- Shipping Methods:
- 📦 Express (DHL/FedEx/UPS): 3–7 business days (global)
- ✈️ Air Freight: 5–10 days (orders ≥ 500 pcs)
- 🚢 Sea Freight: 20–35 days (container loads)
- White-Label Services:
- Laser engraving (brand logo, part #, QR code)
- Branded retail boxes (for direct sales)
- Kitted solutions (e.g., “Optical Mount Kit”: 10 discs + M3 screws + alignment target + balance cert)
· Frequently Asked Questions (FAQ)
Q1: What is the MOQ?
A:
A:
- Standard disc (Ø60×22×8 mm, Al, 3×M3, satin): 200 pcs
- Custom size/hole/thread/material: 500 pcs
- Samples: 3–5 pcs free for verified B2B customers (shipping paid)
Q2: What's the lead time?
A:
A:
- In-stock designs: 5–7 working days after payment
- Custom CAD: 7–10 working days (includes design review & FAI)
- Rush service (≤5 days): Available for +15% fee
Q3: Can I customize the hole count (e.g., 4-hole square), thread type (UNC, metric), add a keyway, integrate O-ring grooves, or switch to titanium?
A: Yes — full customization is our core strength:
A: Yes — full customization is our core strength:
- Hole pattern: 3-hole (120°), 4-hole (90°), 6-hole (60°), or custom angular spacing
- Threads: M3/M4/M5 (metric), #4-40/#6-32 (UNF), or smooth-through
- Features: Keyway (DIN 6885), O-ring groove (ISO 3601), magnetic insert, or radial slots
- Materials: A6061-T6 (standard), 304/316 SS, 4140 steel, or Grade 2 titanium
- Finishes: Brushed (standard), black anodize, clear, PVD TiN, or dry-film lubricant
👉 Send a sketch, STEP file, or description — we’ll provide a 3D model, inertia calculation, tolerance analysis, and quote within 2 hours.
Q4: Is dynamic balancing included? Can you certify it?
A: Yes — dynamic balancing is standard for all discs > Ø40 mm. We provide:
A: Yes — dynamic balancing is standard for all discs > Ø40 mm. We provide:
- Balance certificate (PDF) with:
• Residual unbalance (g·mm)
• Correction plane(s)
• G-value (per ISO 1940-1)
• Test speed (RPM)
For ultra-high-speed apps (>15,000 RPM), we offer G1.0 balancing (+$0.80/unit).
Q5: Do you provide GD&T drawings or inertia calculations?
A: Yes — for every order, we provide:
A: Yes — for every order, we provide:
- Free downloadable CAD files (STEP, IGES, DXF)
- PDF GD&T drawing (ASME Y14.5 compliant)
- Inertia matrix (Jx, Jy, Jz) and center of mass (for simulation)
- BOM-ready part numbering (SolidWorks/Onshape compatible)
· Why Choose YITECH?
✅ Balanced by Design — Not just machined, but dynamically balanced
✅ Symmetry = Reliability — 3-hole pattern ensures zero rotational error
✅ Modular & Scalable — From prototype (200 pcs) to production (50k+)
✅ Engineered for Performance — Used in photonics, medical robotics, and aerospace systems
✅ Symmetry = Reliability — 3-hole pattern ensures zero rotational error
✅ Modular & Scalable — From prototype (200 pcs) to production (50k+)
✅ Engineered for Performance — Used in photonics, medical robotics, and aerospace systems
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