GB/T 4247-2017
Machine bridge reamers with Morse taper shanks

Standard No.

GB/T 4247-2017

Language

Chinese

Release Date

2017

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Lastest

GB/T 4247-2017

Replace

GB/T 4247-2004

Scope

This standard specifies the types and dimensions of bridge reamers for Morse taper shanks. This standard gives the following dimensions in millimeters for bridge reamers with a diameter range d₁ from 6 mm to 50.8 mm: - total length l₃; - total cutting edge length l_{Subscript 2}; ——The length of the tapered cutting edge l₁. These reamers are made right cutting unless otherwise stated.

GB/T 4247-2017 Referenced Document

• GB/T 1443-2016 Self-clamping cones for machine tools and tool holders

GB/T 4247-2017 history

• 2017 GB/T 4247-2017 Machine bridge reamers with Morse taper shanks
• 2004 GB/T 4247-2004 Machine bridge reamers with Morse taper shanks
• 1984 GB/T 4247-1984 Machine bridge reamers with Morse taper shanks