ISO 1793-1975 rus PDF

Full title and description

Ст ISO 1793-1975 (rus) — Cinematography — Reels for 16 mm motion-picture projectors (up to and including 120 m capacity: 18 cm size) — Dimensions. This entry denotes the Russian-language version/recording of ISO 1793:1975 (original English text published by the International Organization for Standardization), reproduced or offered as a Russian translation or Russian-market copy.

Abstract

ISO 1793:1975 defines the nominal dimensions and associated tolerances for 16 mm motion-picture projection reels sized for up to 120 metres of film (18 cm diameter reels). The standard specifies the external and internal geometry necessary to ensure mechanical compatibility with projection equipment and to promote interchangeability of reels used in projection and handling of 16 mm cinematographic film.

General information

• Status: Withdrawn (revised by a later edition).
• Publication date: July 1975 (Edition 1, 1975-07).
• Publisher: International Organization for Standardization (ISO). Russian-language edition/translation may be issued by a national standards body or commercial publisher as indicated by the "rus" designation.
• ICS / categories: 37.060.10 — Motion picture equipment.
• Edition / version: Edition 1 (1975).
• Number of pages: 4 pages (original ISO 1793:1975 publication).

Scope

The standard applies to 16 mm projection reels of the 18 cm (approximately) size and capacities up to 120 m of film. It sets out dimensional requirements for reel flanges, hubs, centre holes and other features that affect fit and operation on projection machines and rewind equipment. ISO 1793:1975 is limited to mechanical dimensions and interchangeability; it does not prescribe materials, finishes or methods of manufacture beyond those needed to meet the dimensional specifications.

Key topics and requirements

• Specified overall flange diameter and allowable tolerances for the 18 cm (120 m capacity) reel.
• Hub (core) diameter and hub-to-flange clearances required for proper winding and machine mounting.
• Centre-hole dimensions and tolerance for compatibility with standard projector spindles and rewind equipment.
• Reference dimensions for flange thickness, rim profile and any location features relevant to mechanical engagement.
• Marking and identification recommendations sufficient to ensure capacity recognition and handling (as applicable within the dimensional specification).
• Interchangeability criteria to ensure reels conforming to the standard work reliably with commercial 16 mm projection hardware of the period.

Typical use and users

Manufacturers of film reels and projection equipment, cinema and educational-venue projection technicians, film laboratory and archiving staff, equipment restorers and conservators, and standards/quality personnel specifying or verifying mechanical compatibility for 16 mm projection systems. Institutions preserving or restoring historical 16 mm collections also reference these dimensional standards for safe handling and equipment selection.

Related standards

ISO 1793:1975 was later revised and superseded by ISO 1793:2005 (new edition covering larger capacity sizes and updated dimensions). Other ISO/TC 36 cinematography standards addressing film dimensions, projector usage and projection conditions (for example standards on image area, projector usage, screen luminance and related film format specifications) are related and should be consulted when specifying complete projection systems or preservation practice.

Keywords

ISO 1793-1975, 16 mm reel, 18 cm reel, projection reel dimensions, cinematography standards, reel interchangeability, Russian translation, Ст ISO 1793-1975, film projection hardware.

FAQ

Q: What is this standard?

A: ISO 1793:1975 is an International Organization for Standardization document that specifies the dimensions for 16 mm cinematographic projection reels sized for up to 120 m (18 cm) capacity. The "Ст ISO 1793-1975 rus" notation indicates a Russian-language version or listing of that 1975 standard.

Q: What does it cover?

A: It covers nominal external and internal dimensions and tolerances for the 18 cm / 120 m capacity 16 mm projection reel — flange and hub dimensions, centre-hole sizing and related features needed for mechanical compatibility with projectors and rewind equipment. It does not set material or finish specifications beyond what is required for dimensional conformity.

Q: Who typically uses it?

A: Reel and projector manufacturers, projectionists, film laboratory technicians, archives and museums, equipment restorers, and anyone concerned with mechanical interchangeability of 16 mm reels for projection and handling.

Q: Is it current or superseded?

A: ISO 1793:1975 is withdrawn and has been revised; the later edition ISO 1793:2005 supersedes the 1975 edition. The 2005 edition expands the scope (different capacities/sizes) and is the current normative reference for reel dimensions unless a more recent revision has since been published.

Q: Is it part of a series?

A: It is part of the body of ISO/TC 36 cinematography standards covering film formats, handling and projection. Related standards address image area, projector usage and screen luminance; ISO 1793 specifically addresses reel dimensions within that family.

Q: What are the key keywords?

A: 16 mm reel, 18 cm, projection reel dimensions, ISO 1793, reel interchangeability, cinematography standards, Russian translation.