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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryIndustryCNC machiningRünenbergGrieder Mechanik AG
Grieder Mechanik AG Logo
Verified· 4 sourcesOwner confirmed
Last updatedNovember 5, 2026

Contact

Summary

About the company

The core activity of the company Grieder Mechanik AG consists in the production and assembly of mechanical components and parts, in particular through turning, milling, drilling, sawing and welding. As a full-service partner for CNC machining or as an expert for innovative and customized solutions in contract manufacturing.

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Presence

Service area

Offering

Products & services

Industry:CNC machining
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Trust Score4.4/5

Grieder Mechanik AG

Mechanical engineering
Metal processor
✓ Offered5
CNC Machining
CNC machining in the turning-milling range for prototypes, individual parts and small series; contract manufacturing in metalworking including turning, multitasking, milling and drilling.
Express Service
Express production for urgently needed spare parts and rework with high priority; fast response time and delivery the next day.
Full Service in CNC Metalworking
Full-service contract manufacturing with procurement, coordination, production and delivery; support for metalworking, sheet metalworking, EDM, surface and heat treatments, welding and assembly.
Assembly of Sub-Assemblies
Manufacturing and assembly of complete sub-assemblies from parts produced in-house, supplemented by soldering work and cable assemblies.
Consulting
Consulting on materials and manufacturing during the project phase to optimise design and costs.
✕ Not offered1
Automotive mechanics
We do not offer anything in the automotive mechanics field.
Expertise

Expert

Jonas Köpfer
Jonas Köpfer
Owner & Managing Director

over 20 years of experience in contract manufacturing, starting as a polymechanic and progressing through all stages. Strong focus on profitability. Daily optimizations are mandatory.

Qualifications & certifications
Technischer Kaufmann eidg. Dipl.2002
Inhaber Jay Kay Holding AG2022
Trust & reputation

ranQ Trust Score of Grieder Mechanik AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of November 2026

Grieder Mechanik AG scores 62.0 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.70.824%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.27.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.78.08%
Grieder Mechanik AG scores 85.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Grieder Mechanik AG scores 98.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).98.322%
Grieder Mechanik AG scores 65.7 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.65.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.15

Grieder Mechanik AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 2 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Common questions

Answers

Which parts does Grieder Mechanik AG manufacture?
We manufacture mechanical components and parts according to customer requirements. This includes prototypes, single parts and small series. Depending on the need, we also take care of the complete assembly.
Which CNC Machining services do you offer?
Our focus is on CNC turning, milling, drilling and multitasking machining. In addition, we also handle sawing and welding. This covers many steps of metal processing from a single source.
Do you also offer express production?
Yes, we offer an express service for urgently needed spare parts and rework. These orders are treated with high priority. Delivery is often possible the next day depending on the order.
Do you also handle procurement and coordination?
Yes, as a full-service partner we can, if desired, take on procurement, coordination, production and delivery. We also support surface and heat treatments as well as eroding. This ensures you receive a fully coordinated solution.
Do you also perform auto mechanics?
No, we do not offer services in the field of auto mechanics. Our focus is on the mechanical manufacturing and assembly of metal parts. We are happy to advise you on suitable manufacturing and design solutions.
For which order sizes is Grieder Mechanik AG suitable?
We manufacture prototypes, individual parts, and small series. Our services are therefore suitable for both development projects and ongoing production and spare parts. We flexibly adapt the scope of manufacturing to your needs.
What materials do you process in mechanical engineering?
We mainly process metallic materials and are happy to advise you on material selection. Depending on the task, we choose the appropriate process for precise and economical results. We also support you in the project phase for special requirements.
Can you deliver complete assemblies instead of individual parts?
Yes, we also undertake assembly of assemblies. We manufacture the parts in-house and, if necessary, add soldering work and cable harnessing. This way you receive fully functional assemblies from a single source.
How do you support planning a new project?
We already advise you in the project phase on materials and manufacturing. The goal is to optimize design, feasibility and costs early. This helps avoid later adjustments and unnecessary effort.
Credentials

Certifications & memberships

ISO 9001
Knowledge

Articles about Grieder Mechanik AG

1 article
5 min read

How CNC Machining Makes Parts Unnecessarily Expensive

What we repeatedly notice in practice: the biggest cost drivers rarely come from the machine itself, but from the CAD model. At Grieder Mechanik AG we often see in CNC machining that a single design decision triggers several additional steps, such as another clamping, a special tool, or more complex inspection. That is why looking at the design early pays off more than looking at the part price later.

November 12, 2026·Read article
Comparisons

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Contact

Location

Hauptstrasse 5
4497 Rünenberg
Opening hours
Mon
07:00 - 17:00
Tue
07:00 - 17:00
Wed
07:00 - 17:00
Thu
07:00 - 17:00
Fri
07:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-114.377.486
Founded
1960 · 66 years
Last commercial register change
August 14, 2026
Employees
1 to 10

Active in 12 of 26 cantons

  • AGAargau
  • BSBasel-City
  • BLBasel-Country
  • BEBern
  • JUJura
  • LULucerne
  • SHSchaffhausen
  • SZSchwyz
  • SOSolothurn
  • SGSt. Gallen
  • ZGZug
  • ZHZurich
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology