EN ISO 7787-3:2017 PDF

Name: EN ISO 7787-3:2017 — Dentistry - Laboratory cutters - Part 3: Carbide cutters for milling machines (ISO 7787-3:2017)
SKU: EN ISO 7787-3:2017
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Dentistry - Laboratory cutters - Part 3: Carbide cutters for milling machines (ISO 7787-3:2017)

Название (английский):

EN ISO 7787-3:2017

Dentistry - Laboratory cutters - Part 3: Carbide cutters for milling machines (ISO 7787-3:2017)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 14
Дата публикации:: 24 мая 2017 г.
Издание:: CEN EN 7787 edition 2 version 1
ICS:: 11.060.20

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Описание (английский):

ISO 7787-3:2017 specifies dimensional and other requirements for the three most commonly used carbide cutters for milling machines which are predominantly used in the dental laboratory. Other characteristics of laboratory cutters (for example, spiralled blades or cross-cut) are not covered by this document. Cutters intended for use with CAD/CAM systems are excluded from the scope of this document.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 7787-3:2017 (ISO 7787-3:2017) - adopted by CEN - defines dimensional and performance requirements for the most commonly used carbide laboratory cutters for milling machines in the dental laboratory. The standard ensures interchangeability, quality and safe use of tungsten‑carbide cutting heads mounted on steel (or equivalent) shanks for dental milling tasks. Cutters intended for CAD/CAM systems and special blade forms (e.g., spiral or cross‑cut) are explicitly excluded.

Key topics and technical requirements

Scope: Specifies three principal cutter head shapes:

Cylindrical, side‑cutting only
Cylindrical, hemispherical
Conical truncated, side‑cutting only

Materials: Shank made of steel or suitable material; working part made of tungsten carbide. Manufacturer selects exact grades/treatments.

Dimensions & shapes: Nominal diameters, head lengths and total lengths are defined in tables (d ±0.08 mm; l ±0.5 mm) for each cutter type. Shank types must be Type 2 or Type 4 per ISO 1797.

Run‑out (concentricity): Total indicated run‑out must not exceed 0.08 mm (measured per ISO 8325).

Sampling & acceptance: Type testing uses a sample of 10 instruments from a validation batch. Pass/fail rules: if ≤ 8 pass → fail; if 9 pass → test 10 more - all 10 must pass to comply.

Measurement & test methods: Dimensional and run‑out tests are to follow ISO 8325 and validated measuring equipment. Designation code numbers follow ISO 2157.

Marking and designation: Requirements for identifying cutters and using ISO designation codes are included.

Applications and users

This standard is primarily used by:

Dental‑laboratory equipment and rotary instrument manufacturers to design and certify carbide cutters.

Quality managers and regulatory affairs teams ensuring product conformity for European markets (EN adoption).

Dental technicians and laboratory managers specifying compatible cutters for milling machines used in prosthetic and appliance fabrication.

Test laboratories performing type approval and dimensional/run‑out verification.

Practical benefits include improved tool interchangeability, predictable machining performance, and simplified procurement when specifying dental laboratory carbide cutters.

Related standards

ISO 1797 - Shanks for rotary and oscillating instruments

ISO 8325 - Test methods for rotary instruments (measurement/run‑out)

ISO 2157 - Nominal diameters and designation codes for rotary instruments

ISO 1942 - Dentistry vocabulary

Keywords: ISO 7787-3:2017, EN ISO 7787-3, dentistry, laboratory cutters, carbide cutters, milling machines, dental laboratory, run‑out, tungsten carbide.

EN ISO 7787-3:2017 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

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Dentistry - Laboratory cutters - Part 3: Carbide cutters for milling machines (ISO 7787-3:2017)