Dimensional Inspection Service in Turkey

QCmatic provides comprehensive dimensional quality control inspection and measurement services across Türkiye, ensuring every manufactured part, casting, or machined component fully meets drawing tolerances and international quality standards.
Our inspection engineers use advanced instruments – from CMMs to optical scanners – to verify every critical dimension with traceable accuracy.

We serve both international buyers and Turkish manufacturers who demand reliable verification before shipment, PPAP submission, or customer approval.

What Is Dimensional Inspection?

Dimensional inspection is the precise measurement and verification of a product’s geometry, ensuring it conforms to its engineering drawings, CAD models, and GD&T (Geometric Dimensioning and Tolerancing) specifications.

It confirms compliance with international standards such as:

• ISO 286-1 / ISO 286-2 – Fits and tolerances
• ISO 1101 – Geometrical product specifications (GPS)
• ISO 8015 – Fundamental principles of tolerancing
• ASME Y14.5 – GD&T standard for US and global clients

This process is essential for:

• Product qualification and approval (PPAP, FAI, ISIR)
• Supplier quality verification
• Assembly fit and interchangeability
• Root cause analysis and dimensional problem-solving
• Process capability and repeatability studies (Cp, Cpk)

Why Dimensional Inspection Matters

Even small deviations in dimensions can cause:

• Assembly failures or misalignment
• Leakage in hydraulic or sealing systems
• Vibration, imbalance, or noise in rotating components
• Reduced lifespan or early failure in service
• Costly rework and warranty issues

By performing dimensional inspection, QCmatic ensures your parts meet design intent, fit perfectly in assembly, and maintain long-term reliability.

Types of Dimensional Inspection Performed

Our dimensional inspection services cover all types of components – machined, cast, forged, welded, or plastic-injected – across a broad range of sizes and tolerances.

Linear and Angular Measurement

We measure dimensions such as:

• Length, width, height, and thickness
• Hole and slot dimensions
• Angles, chamfers, and tapers

Diameters and Cylindrical Features

Using calibrated instruments and CMMs, we measure:

• Internal diameters (bores, holes)
• External diameters (shafts, pins)
• Concentricity, roundness, and runout

Threads and Fastener Features

We inspect:

• Metric and Unified threads (pitch, major/minor diameters, flank angle)
• Taper threads and pipe threads
• Thread form using optical comparators or GO/NOGO gauges

Geometrical Characteristics (GD&T)

We evaluate all form, orientation, and location tolerances, including:

• Flatness and straightness
• Perpendicularity and parallelism
• Position and symmetry
• Circular and total runout
• Cylindricity and concentricity

Surface and Profile Measurements

• Surface roughness (Ra, Rz, Rt) with portable profilometers
• Contour and freeform surface analysis
• Edge radii and chamfer validation

Coordinate Measuring Machine (CMM) Inspection

For complex geometries or tight tolerances, QCmatic uses Coordinate Measuring Machines (CMMs) to capture 3D dimensional data with micron-level accuracy.

We offer:

• Bridge-type CMM inspection for high-precision machined components
• Portable Arm CMM for large parts or on-site inspections
• Laser Scanning and Optical Measurement for non-contact surface mapping
• Reverse Engineering Measurement – converting physical components to CAD data

All CMMs are calibrated in accordance with ISO 10360 and ISO/IEC 17025 traceability requirements.

Equipment and Tools Used in Dimensional Measurement

QCmatic’s dimensional inspection labs and on-site teams utilize a wide range of calibrated instruments, including:

• Coordinate Measuring Machines (CMM)
• Portable Measuring Arms and Laser Trackers
• Optical measurement systems
• Surface plates and height gauges
• Vernier, digital, and micrometer calipers
• Inside and outside micrometers
• Bore gauges and plug gauges
• Thread gauges and ring gauges
• Dial indicators and depth gauges
• Profilometers and contour testers

All devices are maintained and calibrated regularly with certificates traceable to national and international standards.

Critical and Key Dimensions: Our Focus

At QCmatic, dimensional inspection begins with understanding Critical-to-Quality (CTQ) and Key Characteristics (KC) that affect function and safety.
We classify features as:

• Critical Dimensions (CD): Essential for product function or assembly
• Important Dimensions (ID): Related to performance or fit
• Reference Dimensions (RD): Non-functional dimensions for visual control

By focusing on these priorities, we ensure cost-effective and value-driven inspection, minimizing unnecessary measurement effort while guaranteeing product integrity.

Typical Components Inspected

We routinely perform dimensional inspections on:

• Castings (gray and ductile iron, aluminum, steel)
• Forged and machined shafts, housings, brackets
• Hydraulic cylinder parts and valve bodies
• Precision machined parts and turned components
• Stamped or welded assemblies
• Plastic injection molded parts and tooling components

Industries We Serve

Our services cover nearly every industrial sector in Türkiye and abroad:

• Automotive and Heavy Vehicles
• Aerospace and Defense
• Machinery and Equipment Manufacturing
• Energy and Power Generation
• Oil, Gas, and Petrochemical
• Agricultural and Construction Equipment
• Medical Devices and Precision Instruments

Our Dimensional Inspection Process

Step 1 – Technical Review

We review engineering drawings, CAD files, and tolerances (ISO 286, ASME Y14.5) to define inspection criteria.

Step 2 – Measurement Planning

A measurement plan is created, including selected tools, fixture design, environmental control, and sequence.

Step 3 – Measurement Execution

Measurements are conducted in controlled conditions using calibrated equipment by trained inspection engineers.

Step 4 – Data Analysis

Measured results are compared with nominal values, and deviations are statistically analyzed (Cp, Cpk, GR&R if requested).

Step 5 – Reporting and Documentation

A detailed Dimensional Inspection Report is prepared, containing:

• Nominal vs actual dimensions
• Deviation and tolerance results
• Pass/fail marking
• Photos or measurement graphics
• PDF or Excel output, or customer-specific templates (PPAP, ISIR, FAIR)

Our Inspection Coverage in Türkiye

QCmatic performs both on-site and in-laboratory dimensional inspections throughout Türkiye, including:

Ankara, İstanbul, Bursa, Konya, İzmir, Eskişehir, Kocaeli, Sakarya, Düzce, Kayseri, Manisa, Balıkesir, and other industrial cities.

Advantages of Working with QCmatic

Feature	Advantage
Multidisciplinary Expertise	Services performed by mechanical, metallurgical, and industrial engineers with strong metrology knowledge.
Calibrated Equipment	All tools are traceable to ISO/IEC 17025 calibration standards.
Compliance & Reporting	Reports according to PPAP, FAIR, ISIR, or customer formats.
International Experience	Working with European, American, and Middle Eastern clients for supplier verification.
On-site or Lab Options	We provide flexible inspection anywhere in Türkiye.
Transparent Communication	All reports include photographic and statistical data for easy interpretation.

Frequently Asked Questions (FAQ)

What standards are followed in dimensional inspection?

We follow ISO 286, ISO 1101, ASME Y14.5, and ISO 10360 for calibration and measurement accuracy.

Can QCmatic perform on-site inspection at my supplier’s facility?

Yes, we perform on-site inspections across Türkiye using portable CMM arms and digital measurement tools.

What industries commonly use dimensional inspection?

Dimensional inspection is essential in automotive, aerospace, machinery, hydraulic systems, and casting industries.

Can I receive a full dimensional report before shipment?

Yes – our clients often request pre-shipment dimensional reports to ensure conformance before export.

Does QCmatic offer reverse engineering services?

Yes, using 3D laser scanning and CMM data, we can create accurate CAD models of physical parts.

Contact QCmatic – Dimensional Inspection Service in Türkiye

For international buyers, OEMs, and suppliers who need precise dimensional verification, QCmatic delivers accuracy, traceability, and transparency.

📞 Phone: +90 533 197 19 81
📧 Email: [email protected]
📍 Address: Bestepe Mah. Nergiz Sok. 7/2 No: 87, Yenimahalle, Ankara, TURKEY