JB/T 8259.1-2014
Overhead projectors.Part 1: Film rolls, cores and winders.Dimensions (English Version)

Standard No.

JB/T 8259.1-2014

Language

Chinese, Available in English version

Release Date

2014

Published By

Professional Standard - Machinery

Latest

JB/T 8259.1-2014

Replace

JB/T 8259.3-1999

Scope

This part of JB/T 8259 specifies the diameter and length of the film winding mandrel, the keyway and socket dimensions at both ends of the mandrel, the maximum outer diameter of the film roll, and the key and pin dimensions on the film winder. It also specifies the installation of the film winder. Screw hole location and size. This section applies to Type A (250 mm × 250 mm) and Type B (285 mm × 285 mm) transmissive projectors.

JB/T 8259.1-2014 history

• 2014 JB/T 8259.1-2014 Overhead projectors.Part 1: Film rolls, cores and winders.Dimensions
• 1999 JB/T 8259.3-1999 Overhead projectors film rolls, cores and winders dimensions
• 1998 JB/T 8259.1-1998 Overhead projectors-projection stages dimensions
• 0000 JB/T 8259.3-1995

JB/T 8259.1-2014 Overhead projectors.Part 1: Film rolls, cores and winders.Dimensions has been changed from JB/T 8259.3-1999 Overhead projectors film rolls, cores and winders dimensions.