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CNC Machined Aluminum 6061-T6 Gearbox Housing with 0.01mm Concentricity for Industrial Automation

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CNC Machined Aluminum 6061-T6 Gearbox Housing with 0.01mm Concentricity for Industrial Automation

Detail Information

Product Description

Detail Information

Material Options:

Al 6061-T6, Al 7075-T6, Al 5052-H32

Bore Concentricity:

0.01mm Max

Mating Surface Flatness:

0.02mm Max

Surface Finish:

Ra 1.6 (sealing Faces), Ra 3.2 (general Surfaces)

Tolerance:

+/-0.01mm (standard), +/-0.005mm (bearing Bores, Sealing Faces)

Bore Roundness:

0.005mm

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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Sinbo Precision Mechanical Co., Ltd.

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products details

CNC Mechanical Parts

CNC Turning Parts

CNC Milling Parts

CNC Machining Services

Cold Forging Parts

CNC Turning Milling Parts

CNC Aluminum Parts

CNC Stainless Steel Parts

CNC Brass Parts

CNC Stamping Parts

Machining Plastic Parts

Bending Sheet Metal Parts

New Energy Auto Parts

Energy Storage Connectors

Contactor Terminal

Battery Terminal Connector

CNC Manufacturing Solutions

CNC Machined Aluminum 6061-T6 Gearbox Housing with 0.01mm Concentricity for Industrial Automation