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Why Sensor Components require high-precision CNC machining?

Sensor components are often compact, complex, and require micron-level precision to ensure accurate signal detection and environmental durability.

At Reko, we specialize in machining miniature housings, connectors, and mechanical structures for various sensors — guaranteeing consistent accuracy and stability under harsh conditions.

In the aerospace industry, aluminum is among the most widely used metals. As the third most abundant metal on Earth, aluminum perfectly meets the high standards required in aerospace applications. Its lightweight, high strength, and good toughness make it ideal for aircraft structural components, engine parts, and aerospace electronic devices.

We process components for diverse sensor types including temperature, pressure, flow, position, acceleration, and optical sensors, covering core structural parts such as housings, brackets, connectors, and heat sinks. Equipped with advanced five-axis machining centers, 3D coordinate measuring machines, and an experienced engineering team, we not only meet complex structural and high-precision machining demands but also shorten delivery cycles while ensuring quality.

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Why choose REKO?

ISO 9001:2015 Quality Management System
Ensures every component meets stringent quality requirements

High-Precision Machining Capabilities
CNC machining accuracy up to ±0.001mm, meeting the demands of high-end sensor components

Strict Quality Control Processes
Comprehensive dimensional inspection, surface inspection, and functional testing throughout production to guarantee component consistency

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The industries we serve

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Aerospace

Sensors are used for pressure monitoring in hydraulic systems, temperature control in engines, altitude and position detection, and vibration monitoring for structural safety.

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Medical

Medical sensors are essential for patient monitoring, imaging systems, diagnostic devices, and surgical instruments, ensuring accuracy and reliability in healthcare.

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Automotive

Sensors are critical in engine management, braking systems, emission control, driver assistance systems (ADAS), and electric vehicle battery monitoring.

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Electronic

Consumer electronics rely on sensors for motion detection, touch and pressure input, temperature control, and environmental monitoring in devices like smartphones, laptops, and wearables.

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Communication

In telecommunications, sensors support thermal management of network equipment, signal stability monitoring, and environmental control in base stations and data centers.

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Industrial automation

Sensors enable robotics, process control, quality inspection, and predictive maintenance, ensuring efficiency and safety in automated production lines.

Types of sensors we can process

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Temperature sensor

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Pressure & Oil Sensor

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Speed Sensor

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Position & Level Sensor

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Flow and Fluid Sensors

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Custom Sensor Connectors

Material & Surface Treatment for Sensor Component

Aluminum
Stainless Steel
Mild Steel
Brass
Plastic

Stainless Steel

It offers exceptional corrosion resistance, structural strength, and environmental durability, making it a reliable choice for demanding industrial and sanitary environments.

Common Brand Names: 6061, 6063, 6082, 7075, 2024

Surface Treatment: Anodizing, Hard anodizing, Sandblasting, Conductive anodizing, Nickel plating

Sensor Components Type: Enclosure, Bracket, Connector, Sensor housing

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Anodizing

Features:

Improves corrosion resistance, wear resistance, and provides electrical insulation; can also allow decorative coloring for aluminum sensor housings.

Typical Applications:

Aluminum enclosures, brackets, heat dissipation housings, and sensor shells.

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Electroplating

(Nickel / Gold / Tin)
Features:

Enhances conductivity, wear resistance, and corrosion protection. Gold and tin plating ensure stable signal transmission in harsh environments.

Typical Applications:

Connector pins, terminals, sensor contacts, and shielding components.

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Electroless Nickel Plating

Features:

Provides uniform coating with high hardness and excellent corrosion resistance; suitable for complex shapes and precision parts.

Typical Applications:

Sensor housings, shafts, miniature gears, and parts requiring both conductivity and wear resistance.

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Passivation

Features:

Improves corrosion resistance of stainless steel without changing dimensions or appearance; enhances cleanliness for sensitive applications.

Typical Applications:

Stainless steel housings, sensor diaphragms, pressure sensor components, and medical sensor parts.

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Polishing

Features:

Creates a smooth surface, reduces friction, and improves sealing performance in contact areas.

Typical Applications:

Sensor diaphragms, sealing rings, precision shafts, and optical sensor components.

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Coating

(PTFE / Insulation Coatings)
Features:

Provides mild corrosion resistance, reduces light reflection, and enhances appearance when combined with oil or wax.

Typical Applications:

Fasteners, brake system parts, tools, and interior steel components.

Industry Challenges in Sensor Manufacturing

Manufacturing sensors is far from simple. From ultra-tight tolerances and delicate geometries to diverse material requirements and demanding surface finishes, every step presents unique challenges. Consistency, reliability, and compliance with strict industry standards make sensor production even more complex. Overcoming these obstacles requires advanced CNC machining capabilities and rigorous quality control.

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Ultra-tight Tolerances

Machining housings and components with ±0.01mm or better tolerances is critical but difficult to maintain consistently.

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Thin-walled & Micro Features

Many sensor parts have thin walls, deep cavities, or micro-holes that are prone to deformation during machining.

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Material Machinability

Engineering plastics and stainless steels used in sensors have very different cutting behaviors, challenging tool selection and stability.

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Surface Finish Consistency

Functional surfaces often require Ra 0.8μm or finer, making surface finish control a challenge in mass or small-batch production.

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Surface Treatments for Reliability

Anodizing, passivation, and plating must ensure corrosion resistance and airtight sealing, while avoiding defects like uneven coating.

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Assembly Fit & Sealing Grooves

Machining precise sealing grooves and connector threads requires both accuracy and repeatability.

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Heat & Stress Control

During CNC machining, heat and cutting forces can distort small or delicate sensor parts.

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Inspection & Quality Validation

Tiny features and surface-treated parts require advanced inspection methods (CMM, profilometry), increasing complexity.

Customer Case Study

Client: Global drivetrain manufacturer

Client Overview:

We provided precision CNC machining services for a leading sensor manufacturer from Switzerland. The client specializes in high-end pressure sensors, with extremely stringent requirements on dimensional accuracy, surface quality, and sealing performance.

Material:

316L Stainless Steel

Part Application:

Pressure Sensor Housing

Surface Treatment:

Internal Cylindrical Grinding + Electrolytic Polishing

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Manufacturing Challenges:

Internal surface roughness requirement: Ra < 0.3 μm Ensuring consistent dimensions and long-term sealing performance

In this project, we successfully met the customer's requirements by combining high-precision CNC machining with subsequent polishing processes. The resulting parts demonstrated excellent corrosion resistance, stability, and long-term reliability in real-world applications, ensuring that the customer's sensor products maintained precise performance even under harsh operating conditions.

Sensor FAQs for CNC Machining

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