CNC Machined Aluminum 6061-T6 Gearbox Housing with 0.01mm Concentricity for Industrial Automation
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
Negotiable
Product Description
CNC Machined Aluminum Gearbox Housing for Industrial Automation
Product Overview
Gearbox housings are precision components where every dimension is critical, often featuring internal cavities inaccessible to standard tools. We specialize in machining these complex parts for robotics, conveyors, and custom automation equipment, delivering precision bearing bores, tight flatness tolerances, and accurate mounting features within demanding timelines.
Key Features
- Bearing Bore Precision: Concentricity between input/output bores within 0.01mm. Bore roundness within 0.005mm. Achieved through single-setup boring on 4-axis CNC or precision jig boring with CMM verification.
- Mating Surface Flatness: 0.02mm or better on sealing faces. Machined as the final operation to prevent clamping-induced distortion, verified with CMM surface flatness scanning.
- Integrated Mounting Features: Tapped holes, dowel pin holes, and mounting bosses machined in the same setup as bores. Position tolerance within 0.05mm relative to datum A-B.
- Material Options: Al 6061-T6 (general industrial), Al 7075-T6 (high-strength applications), Al 5052-H32 (marine/corrosive environments). All materials include certification.
- Sealing Surface Finish: Ra 1.6 or better on all sealing faces. Achieved with finishing passes using sharp inserts for reliable long-term sealing performance.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | CNC Machined Aluminum Gearbox Housing |
| Material Options | Al 6061-T6, Al 7075-T6, Al 5052-H32 |
| Tolerance | ±0.01mm (standard), ±0.005mm (bearing bores, sealing faces) |
| Bore Concentricity | 0.01mm max |
| Mating Surface Flatness | 0.02mm max |
| Surface Finish | Ra 1.6 (sealing faces), Ra 3.2 (general surfaces) |
| Surface Treatment | Anodized (Type II natural/black), Hard anodize (Type III), Powder coating |
| Certifications | ISO 9001:2015, IATF 16949, RoHS, CE, REACH |
| Lead Time - Prototype | 3-7 days |
| Lead Time - Production | 7-15 days |
| MOQ | 1 piece (prototype), 100+ (production) |
| Origin | Dongguan, China |
Applications
- Industrial Robotics: Robot joint gearbox housings, harmonic drive housings, planetary gearbox casings, servo gearbox enclosures
- Automation Equipment: Conveyor drive gearbox housings, packaging machine gearboxes, material handling system reducers
- Electric Motors: EV motor gearbox housings, e-bike reduction gear casings, power tool transmission housings
- Agricultural Machinery: Hydrostatic transmission housings, PTO gearbox casings, fertilizer spreader gearboxes
- Marine Applications: Marine propulsion gearbox housings, winch drive casings, thruster gear units
- Custom Machinery: Prototype gearbox housings for R&D, custom reduction drives, specialized transmission casings
Manufacturing Process
- DFM Review: Analyze bore layout, check wall thickness, verify datum structure, assess material selection
- Programming & Fixturing: CAM programming with optimized tool paths, custom fixture design, soft jaws matching housing profile
- Roughing: Bulk material removal with controlled cuts, leaving 0.5mm stock on critical surfaces
- Semi-Finishing & Finishing: Precision boring, finishing passes, thread milling with light DOC to minimize stress
- Inspection: CMM full layout inspection, bore analysis, surface finish verification
- Surface Treatment & Finishing: Anodizing, deburring, cleaning, protective packaging
Why Choose Our Precision Manufacturing
- Gearbox Housing Specialization: 20+ years experience machining hundreds of housings from 50mm to 400mm sizes
- 4-Axis & 5-Axis Capability: Multi-face machining in 1-2 setups for superior concentricity and positional accuracy
- In-House CMM Inspection: Full CMM report for every part, ensuring bore diameters, positions, and flatness meet specifications
- Aluminum Expertise: Comprehensive knowledge of 6061 vs 7075 material characteristics and optimal machining techniques
- Assembly Support: Sub-assembly services including bearing pressing, shaft installation, and seal fitting
- Revision Management: Maintained revision history and seamless transition between design changes
Frequently Asked Questions
Can you hit 0.01mm concentricity between two bearing bores?
Yes, but only if we can machine both bores in a single setup. For bores on opposite sides, we recommend 4th-axis setup or manual boring bar for final sizing to maintain precision.
Al 6061 or Al 7075 for a robot gearbox housing?
For most robot joint gearboxes, 7075 is recommended due to its 40% higher yield strength. Use 6061 for cost savings or very large housings where 7075 becomes cost-prohibitive.
Do you hard anodize the bore surfaces?
We typically don't recommend hard anodizing bearing bores as it changes diameter and surface finish. For bearing seats, precise sizing for bearing fit is preferred, with hard anodizing applied to external surfaces.
What's the lead time for a prototype gearbox housing?
3-7 days from drawing approval. Material availability is verified before schedule commitment to ensure timely delivery.
Can you make a gearbox housing from stainless steel?
Yes, we machine SS 304, SS 316, and 17-4 PH for corrosive or high-strength applications. Aluminum remains preferred for most industrial applications due to weight and machining efficiency.
Do you provide assembly services for the gearbox?
We offer sub-assembly services including bearing pressing, shaft installation, and seal fitting. Full gearbox assembly depends on complexity and can be discussed based on requirements.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Sinbo Precision Mechanical Co., Ltd.
Location
Factory 1: No.7,Mingzhu 2 road,Shebei,Huangjiang,Dongguan,Guangdong,China 523752 Factory 2: No.19,Mingzhu 1 road,Shebei,Huangjiang,Dongguan,Guangdong,China 523752
Contact Person
Yang