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| 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 CNC-Machined Rotary Hub Adapter — a high-integrity mechanical interface engineered for secure shaft coupling, motor-to-load alignment, and modular assembly in servo systems, encoders, pumps, and automated machinery.
This robust cylindrical component features:
- A central through-bore (Ø10 mm standard) with precision internal threading or smooth finish for shaft mounting
- Two opposing M3 set-screw holes (with flat-bottom counterbores) for axial clamping and zero-backlash fixation
- A stepped outer profile for bearing seat support, housing integration, or O-ring sealing
- Mirror-finish machined surfaces with concentricity ≤ 0.01 mm and surface roughness Ra ≤ 0.2 μm
- Made from AISI 304 stainless steel (corrosion-resistant) or A6061-T6 aluminum (lightweight, high-stiffness)
Unlike generic stamped or cast adapters, this part is fully CNC-machined from solid bar stock, ensuring dimensional stability, zero porosity, and repeatable performance — critical for high-speed rotation, cyclic loading, or precision positioning applications.
Ideal for engineers building custom drive trains, encoder mounts, rotary tables, or compact actuation modules where zero slippage, minimal runout, and long-term reliability are non-negotiable.
· Core Specifications
| Parameter | Specification |
|---|---|
| Material Options | • AISI 304 Stainless Steel (standard) • A6061-T6 Aluminum (lightweight variant) • Optional: 316L SS, 17-4 PH, or Ti-6Al-4V |
| Surface Finish | Brushed satin (Ra ≤ 0.4 μm) or mirror-polished (Ra ≤ 0.1 μm); optional black anodizing (Al only) |
| Overall Dimensions | Ø45 mm × H30 mm (standard); customizable: Ø30–60 mm × H20–50 mm |
| Central Bore | Ø10 mm ±0.005 mm (smooth or internal M10×1 thread); depth = full through |
| Set-Screw Holes | 2× M3×0.5, opposing, flat-bottom counterbored (depth = 6 mm); compatible with grub screws (e.g., DIN 913) |
| Outer Profile | Stepped OD: Ø45 mm (flange) → Ø38 mm (body) → Ø32 mm (base); optional O-ring groove (AS568 #005) |
| Tolerances | • Bore concentricity: ≤ 0.01 mm • Face flatness: ≤ 0.015 mm • Set-screw hole position: ±0.02 mm • Length: ±0.03 mm |
| Manufacturing Process | 4-axis CNC turning + milling + drilling + deburring + passivation (SS) / anodizing (Al) + laser marking |
| Max Operating Speed | 12,000 RPM (static balance verified at 5,000 RPM; dynamic balance available on request) |
| Load Capacity | Axial: 2,800 N; Radial: 1,500 N (static, 25°C); tested per ISO 10100 |
| Operating Temp. | -60°C to +250°C (304 SS); -40°C to +120°C (A6061-T6 Al) |
| Compliance | ISO 9001, RoHS, REACH; FDA-compliant (optional for food/pharma) |
· Application Scenarios
This versatile hub adapter excels in precision mechanical integration:
- Servo & Motor Coupling
→ Direct shaft adapter for NEMA 17/23 motors, BLDC hubs, or planetary gearheads
→ Zero-backlash clamping for high-torque, high-accuracy motion systems - Encoder & Sensor Mounting
→ Rigid base for optical/rotary encoders (ensures minimal eccentricity for signal fidelity)
→ Reference surface for magnetic or Hall-effect sensors - Pump & Valve Actuators
→ Drive shaft coupling for diaphragm pumps, solenoid valves, or proportional flow controls
→ Sealing interface with optional O-ring groove (for IP65+ environments) - Robotics & Automation
→ Joint rotation hubs for robotic arms (with integrated bearing seats)
→ Modular end-effector adapters (quick-release tooling interfaces) - Medical & Lab Equipment
→ Centrifuge rotor adapters, pipette drive mechanisms, or diagnostic instrument spindles
→ Cleanroom-compatible (passivated, particle-free finish)
💡 Why engineers choose this design:
- Set-screw locking eliminates keyways and simplifies assembly
- Stepped OD enables dual-function: bearing support + housing seal
- Solid-bar construction prevents vibration-induced fatigue
- Lightweight option (Al) extends battery life in mobile platforms
· Production Process Introduction
· Packaging and Shipping Methods
- Standard Packaging: 1 unit per anti-static PE bag; 50 units per cardboard box with EPE dividers.
- Bulk Options: 200–5,000 units per pallet (custom tray inserts available).
- Shipping Methods:
- 📦 Express (DHL/FedEx/UPS): 3–7 business days (global)
- ✈️ Air Freight: 5–10 days (orders ≥ 200 pcs)
- 🚢 Sea Freight: 20–35 days (container loads)
- White-Label Services:
- Laser engraving (logo, part number, QR code)
- Branded packaging (custom boxes, inserts, datasheets)
- Kitted solutions (e.g., “Encoder Mount Kit” with hub + M3 screws + O-rings)
· Frequently Asked Questions (FAQ)
Q1: What is the MOQ?
A:
A:
- Standard hub (Ø45×30 mm, 304 SS, M3 set-screws): 100 pcs
- Custom geometry (bore size, OD steps, threads, material): 200 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 (new layout): 8–12 working days (includes design review & FAI)
- Rush service (≤6 days): Available for +20% fee
Q3: Can I customize the bore (e.g., Ø8/12/14 mm), add internal threads, or include an O-ring groove?
A: Yes — full customization is our strength:
A: Yes — full customization is our strength:
- Bore diameters: Ø6–Ø20 mm (±0.005 mm for interference fits)
- Threads: Internal M8/M10/M12 (for shaft locking) or external threads for stacking
- Features: O-ring groove (AS568 #005–#010), keyway, flat for set screw, or bearing seat radius
- Materials: 304 (standard), 316L (marine), 17-4 PH (high-strength), A6061-T6 (lightweight), or titanium
- Finishes: Brushed, polished, black anodized (Al), or PVD-coated (TiN/CrN)
👉 Send a sketch, STEP file, or description — we’ll provide a 3D model, tolerance analysis, and quote within 2 hours.
Q4: Are the set-screw holes positioned for true diametral opposition?
A: Yes. Holes are machined using centering pins and verified via CMM — angular deviation ≤ ±0.5° (true 180° opposition), ensuring balanced clamping force and zero eccentricity.
A: Yes. Holes are machined using centering pins and verified via CMM — angular deviation ≤ ±0.5° (true 180° opposition), ensuring balanced clamping force and zero eccentricity.
Q5: Do you offer dynamic balancing or certification reports?
A: Yes — for high-RPM applications (>6,000 RPM), we offer:
A: Yes — for high-RPM applications (>6,000 RPM), we offer:
- Dynamic balancing (G2.5 grade, per ISO 1940-1)
- Full QA report (CMM data, runout, torque test, material cert)
- ISO 17025 lab-certified test reports (upon request)
· Why Choose YITECH?
✅ Engineered for Zero Backlash — Set-screw design + tight tolerances = no slippage, even under shock load
✅ Material Flexibility — Choose stainless for durability or aluminum for weight savings
✅ Rapid Customization — From concept to metal in under 10 days
✅ Global Compliance — Trusted by automation integrators, medical device makers, and robotics OEMs
✅ No Minimum Complexity — Small batches, complex geometries, and iterative prototyping welcome
✅ Material Flexibility — Choose stainless for durability or aluminum for weight savings
✅ Rapid Customization — From concept to metal in under 10 days
✅ Global Compliance — Trusted by automation integrators, medical device makers, and robotics OEMs
✅ No Minimum Complexity — Small batches, complex geometries, and iterative prototyping welcome
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