Dongguan Lanbo Electronics Technology Co., Ltd.

Custom CNC Turned Black Anodized Aluminum Cylindrical Knob

Custom CNC Turned Black Anodized Aluminum Cylindrical Knob
Part No :

Custom CNC Turned Black Anodized Aluminum Cylindrical Knob product parameters

We offer full custom CNC turning services for non-standard precision components. We manufacture lathe parts strictly according to your CAD drawings, or provide engineering design support and production arrangements based on your specific requirements.

Item	Details
Product Name	Custom CNC Turned Black Anodized Aluminum Cylindrical Knob
Manufacturing Process	CNC turning, square mounting shank milling, cross fixing hole drilling, precision deburring, black anodizing surface finishing
Materials Available	6061‑T6 aluminum alloy (standard), SUS304 / SUS316 stainless steel, C36000 brass, carbon steel
Surface Treatment	Black anodizing (standard), natural anodizing, hard anodizing, sandblasting + anodizing, nickel plating, zinc plating
Tolerance Standard	Dimensional tolerance ±0.01mm; high coaxiality between cylindrical body and square shank; precise cross hole position tolerance; strict surface finish and anodizing film thickness control
Inspection Standards	Micrometer & caliper dimension measurement, coaxiality inspection, hole position verification, surface visual check, anodizing film thickness testing under ISO quality management system
Customization Service	Custom body diameter, overall length, square shank size and cross hole dimension per drawings or samples; support prototype trial production, OEM & ODM mass‑volume orders

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Detailed description

Custom CNC Turned Black Anodized Aluminum Cylindrical Knob

Our Custom CNC Turned Black Anodized Aluminum Cylindrical Knob is a solid manual adjustment component with square mounting shank and cross fixing hole. As a professional CNC turning manufacturer based in Dongguan, we produce customized aluminum cylindrical knobs with ±0.01mm ultra‑precise tolerance strictly following customers’ 2D & 3D engineering drawings. We support full OEM & ODM customization for knob size, shank specification and hole position. These black anodized knobs are widely used for manual adjustment, clamping control and operation tuning in industrial equipment, testing instruments and automation fixtures.

Introduction to CNC Lathe Turning Technology

CNC lathe turning is one of the most precise and efficient manufacturing methods for rotational metal components used in industrial automation and precision equipment. Using programmable multi‑axis turning centers, metal bars are processed through continuous cutting, facing, grooving, threading and boring with computer‑controlled accuracy.
Compared with manual machining and conventional milling, precision CNC turning achieves stable dimensional tolerance down to ±0.01mm, smooth surface quality and outstanding consistency during mass production. It is widely applied to fabricate pins, shafts, bushings, connectors and threaded parts for mold, electronics, medical, automotive and automation machinery.
Equipped with secondary milling and cutting capacity, CNC turning supports complex customized profiles including stepped cylinders, grooved structures and multi‑sided profiles, satisfying diversified precision positioning component demands for industrial equipment.

Product Definition & Industrial Value

Black anodized aluminum cylindrical knob is an integrated manual operation part composed of large‑diameter cylindrical grip body, square mounting shank and transverse fixing hole. The cylindrical body provides comfortable holding and sufficient torque for turning, square shank prevents slipping after installation, and cross hole enables reliable locking with pins or screws. It solves common pain points such as loose installation, slipping during adjustment and poor operation feel, greatly improving tuning convenience and operation reliability for industrial equipment and instruments.

Our Product Service

We provide one‑stop custom CNC turning service for black anodized aluminum cylindrical knobs for global industrial equipment and instrument manufacturers. Our product scope covers custom adjustment knobs, hand‑turning parts, clamping handles and other non‑standard operation hardware. We complete full turning, shank milling, hole drilling and surface finishing strictly based on customer engineering drawings. Value‑added services include diversified surface treatment, full‑dimension inspection, prototype sampling and large‑batch OEM production.

5 Core Advantages

Integrated solid cylindrical grip structure

The knob is machined from a single piece of metal bar through one‑piece CNC turning, with no splicing or assembly gaps. It delivers high structural strength, resistance to cracking and deformation under long‑term torsion. The large‑diameter cylindrical surface offers sufficient holding area and turning torque, making manual adjustment labor‑saving and smooth even for frequent operation.

Square shank + cross locking hole design

The square mounting shank effectively prevents idle rotation and slipping after assembly, ensuring stable torque transmission during turning. The transverse fixing hole can be matched with pins or set screws for secondary locking, so the knob will not loosen or shift even under long‑term frequent adjustment and vibration working conditions.

Premium black anodizing surface treatment

Standard black anodizing film forms a dense protective layer on the aluminum surface, which improves surface hardness, wear resistance and corrosion resistance. The matte black appearance presents a high‑grade industrial texture, matches the dark tone of most equipment shells, and also provides certain insulation and scratch‑resistant performance.

Lightweight high‑strength aluminum material

Adopting 6061‑T6 aluminum alloy as standard material, the knob achieves excellent strength‑to‑weight ratio. It is significantly lighter than steel knobs, reduces the overall weight of equipment, and maintains good corrosion resistance, suitable for both indoor and outdoor industrial application scenarios.

Full‑parameter drawing‑based customization

All key dimensions including cylindrical body diameter, overall length, square shank specification and cross hole position can be fully adjusted according to your 2D/3D drawings or physical samples. We accept both small‑batch prototype verification orders for new product development and large‑volume mass production for formal projects.

OEM Custom Service Range

We provide comprehensive customized solutions for custom black anodized aluminum cylindrical knobs and all kinds of precision CNC turned components. Available materials include 6061‑T6 aluminum alloy, SUS304/SUS316 stainless steel, C36000 brass and carbon steel, with sufficient bar stock to match different strength, weight and corrosion resistance requirements.
Our custom product range includes operation knobs, locating pins, bushings, stepped shafts, threaded fittings and other rotational precision machined parts. Selectable surface treatments: black anodizing, natural anodizing, hard anodizing, nickel plating, zinc plating and sandblasting.
We can supply single parts or matched hardware kits according to assembly needs. Custom machining will be developed based on your drawings or samples. Small batch prototype testing is available before formal mass production.

Typical Application Scenarios

Our Custom CNC Turned Black Anodized Aluminum Cylindrical Knob is widely used in industrial equipment adjustment, instrument and meter control, fixture clamping operation, testing equipment tuning, control cabinet operation components and automation equipment manual regulation.

Frequently Asked Questions

FAQ 1

Q: Can you produce custom CNC turned parts according to my drawings or samples?
A: Yes, we mainly focus on OEM & ODM customized precision turning services. We accept 2D files like PDF/DWG and 3D files such as STEP, IGES. You can also send physical samples for us to reverse-engineer and optimize the structure. Our engineering team will review your design and offer professional suggestions on cost saving and manufacturability (DFM) for free.

FAQ 2

Q: What kinds of metal materials can you use for CNC turning processing?
A: We support a full range of common precision machining metals, including SUS304/SUS316 stainless steel, 1018/1045 carbon steel, 6061/7075 aluminum alloy, C36000 brass, copper and titanium. We can select suitable raw materials based on your product usage, working environment, strength requirements and budget.

FAQ 3

Q: Can I get trial samples before mass production? How long is the sample lead time?
A: Trial samples are available for all customized turning orders. The sample production cycle is 3–7 working days after drawing confirmation. After you test and confirm the sample quality and dimensions, we will arrange mass production. Small batch trial orders are also acceptable if you do not need large volume at first.

FAQ 4

Q: What surface finishing options do you provide for CNC turned metal parts?
A: We offer multiple surface treatments to meet anti-rust, anti-corrosion, wear resistance and appearance demands: passivation, electropolishing, zinc plating, nickel plating, black oxide, powder coating, anodizing for aluminum, sandblasting and polishing. If your products are exported to Europe, we can provide surface treatment that complies with RoHS and REACH standards.

FAQ 5

Q: How do you control the dimensional tolerance of precision CNC turned parts?
A: Our standard tolerance for general turned parts is ±0.01mm, and ultra-precision components can achieve ±0.005mm with grinding processes. We carry out strict three-step quality inspection: IQC for raw material incoming check, IPQC for in-process production monitoring, and FQC full dimension testing before shipment. We provide inspection reports and accept third-party quality inspection as requested.

About our company

Dongguan Lanbo Electronic Technology Co., Ltd. (Brand: LAMBOOR) was established in 2010 with 15 years of experience in precision hardware manufacturing. We own a 3,000 sq.m standardized factory and employ over 100 professional technicians, acting as an integrated one-stop manufacturer specializing in custom precision hardware structural components, covering mold development, stamping, sheet metal, CNC turning, welding and dust-free assembly.

We are fully equipped with Jinfeng/Aomate stamping machines, laser cutting machines, CNC bending machines, together with complete QC testing equipment including 2D projectors, salt spray testers and tensile testers. Certified to ISO9001:2015, we hold multiple utility model patents for hardware molds.

Our products are widely applied in consumer electronics, optical communication, medical devices, automotive and new energy electrical industries, with more than 400 customized projects completed. We maintain long-term partnerships with renowned enterprises including KYOCERA, Foxconn and RICOH.

63% of our annual RMB 30 million revenue comes from overseas exports. Our self-developed progressive mold technology cuts processing costs by 80%. We support rapid prototyping and mass production, delivering stable, cost-effective customized hardware solutions for global clients.