Frequently asked questions
Direct answers to the questions buyers, engineers and quality teams ask us most often.
At a glance
- 48production machines18 milling · 20 turning · 10 gear
- 75-axis machining centres
- Ø670largest turned part× 1,512 mm, one clamping
- M6gear moduleup to Ø260 mm
- 9certified management systemsIATF 16949 · AS9100D · ISO 9001
- 16export countries95% of output exported
Company
2 questionsWho is Yağmaksan?
A contract manufacturer of precision machined and geared components, in Çorum, Türkiye, since 1994.
- 115 employees: 30 office, 85 production
- 95% of output exported to 16 countries
- EU logistics centre in Berlin: Yağmaksan GmbH
Who are your customers?
OEMs in energy, rail, aerospace, industrial machinery, machine tools and food machinery. References include Siemens Energy, GE, Alstom, Knorr-Bremse, Voith, Georg Fischer, GEA, Bühler and Turkish Aerospace.
Capabilities
8 questionsWhat is the largest part you can machine?
- Turning: Ø670 × 1,512 mm, in one clamping
- Milling: travels up to 1,600 × 800 × 700 mm
- 5-axis: Ø550 × 500 mm, up to 800 kg
- Gears: Ø260 mm, module 6
- Swiss-type: bar work up to Ø42 × 320 mm
How many machines do you have?
48 production machines: 18 milling, 20 turning and 10 gear machines. With metrology, grinding and other equipment, all 61 items are listed on the machine park page.
Do you do 5-axis simultaneous machining?
Yes. On 7 five-axis machining centres: DMG Mori DMU 50, GF Mikron Mill E700 U, 2 × GF Mikron Mill P800 U, 2 × Spinner U630 and Spinner U620.
Do you cut gears?
Yes, up to module 6. 6-axis CNC hobbing, gear shaping (Fellows type) and broaching of splines and keyways; gear blanks are turned in-house. See gear manufacturing.
Do you do Swiss-type turning?
Yes. Series parts such as pins, bolts and fasteners from bar up to Ø42 × 320 mm.
Do you weld?
Yes, in a separate welding facility. TIG and MIG/MAG welding plus a Fronius robotic TIG/CMT cell; AWS and EN qualified welders, WPS. See welding and fabrication.
Which processes do you subcontract?
At approved suppliers, managed by us:
- Heat treatment: vacuum nitriding, case hardening
- Coating and painting: Alodine, manganese and zinc phosphate, industrial painting
- Forging and casting: approved forges and foundries
We inspect returning parts and measure hardness and coating thickness in-house.
Which materials do you machine?
- Steels: structural, carbon, medium and high alloy, free-cutting and case-hardening steels
- Stainless steels: austenitic, ferritic, martensitic, duplex
- Non-ferrous: 2xxx, 5xxx, 6xxx and 7xxx series aluminium, CuSnPb bronze
- Engineering plastics: POM (Delrin), ABS, PTFE
See materials.
Quality
6 questionsWhich certifications do you hold?
9 certified management systems: IATF 16949:2016, AS9100D:2016, ISO 9001:2015, ISO/IEC 27001:2022, ISO 14001:2015, ISO 45001:2018, ISO 50001:2018, ISO 28001:2007, ISO 10002:2018. Certificate numbers, validity and PDFs: certifications.
What tolerances can you hold?
Our machine and measuring values:
- 5 µm positioning: 5-axis (GF Mikron Mill P800 U)
- 4 µm positioning: turn-mill (DMG Mori NTX 2000)
- 3 µm repeatability
- CMM accuracy 1.5 + L/350 µm (Zeiss Contura G2)
The achievable part tolerance depends on geometry, material and clamping; send the drawing for a firm answer.
Do you measure parts in-house?
Yes. 4 CMMs (Zeiss Contura G2, 2 × Hexagon Global S, Aberlink), plus contour, roughness, hardness and coating-thickness measurement and spectrometer analysis.
Do you provide first article inspection reports?
Yes. With ballooned drawings and CMM reports, in the format you specify.
Do you provide material certificates?
Yes. EN 10204 3.1 inspection certificates from the material supplier, traceable to the batch.
Are you AS9100 certified?
Yes. AS9100D certified since April 2024.
Commercial and logistics
6 questionsHow long does a quotation take?
Between 2 and 15 working days for a complete request, depending on project size and machining complexity.
Is there a minimum order quantity?
No. We work from single prototypes to series; about 700,000 parts a year in more than 4,000 part types.
Which delivery terms do you offer?
EXW, FCA, DAP or DDP, from Çorum or from our Berlin warehouse.
Do EU customers pay customs duty?
No. Industrial goods shipped from Türkiye with an A.TR certificate enter the EU duty-free under the Customs Union; only import VAT applies. See sourcing from Türkiye.
Can you hold stock?
Yes. For call-off orders, in Çorum or Berlin, on agreed terms.
Which languages do you work in?
Turkish, English and German.
Data security
3 questionsAre my drawings safe with you?
Yes. Drawings are handled under our information security management system certified to ISO/IEC 27001:2022 and are never shared with other customers.
Will you sign our NDA?
Yes, before you send drawings.
Which file formats do you accept?
STEP, IGES, DXF, PDF and ZIP, up to 50 MB per request through the quote form.
Locations
2 questionsWhere are you located?
- Production: Çorum Organised Industrial Zone; Ankara 220 km, Port of Samsun 165 km
- Welding and sub-processes: a separate facility in the same zone
- Berlin: Yağmaksan GmbH, EU logistics centre
See facilities.
Can we audit you?
Yes. We welcome customer audits; contact us to schedule a date.
Frequently asked questions
What does Yağmaksan do?
Contract manufacturing of precision machined and geared components — 5-axis milling, turning, gear cutting, grinding, welding and assembly — for OEMs in energy, rail, aerospace and machinery.
How do I request a quote?
Use the quote form or email info@yagmaksan.com with drawings, material, quantity and target date.
Where is Yağmaksan based?
Çorum, Türkiye (production) and Berlin, Germany (Yağmaksan GmbH, logistics).
Last updated:
Related pages
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Capabilities
Milling, turning, gear cutting, grinding, welding and assembly in our own plants, measured in-house.
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Quality
Certified systems, in-house CMM laboratory and full documentation.
Send us your drawing.
STEP, IGES, DXF or PDF. Quotation within 2–15 business days, depending on size and complexity.