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GB/T 6335.2-2010Rotary and rotary impact masonry drill bits with hardmetal tips Part 2: Technical specifications (English PDF)

旋转和旋转冲击式硬质合金建工钻第2部分：技术条件

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 23, 2010

Implementation date

July 1, 2011

Scope

GB/T 6335.2-2010 is the English-translated version of 旋转和旋转冲击式硬质合金建工钻第2部分：技术条件.

GB/T 6335.2-2010 is the Chinese standard "Rotary and rotary impact masonry drill bits with hardmetal tips Part 2: Technical specifications".

Its scope clause reads: GB/T 6335 provisions of this part of the Rotary and rotary impact masonry drill bits carbide (hereinafter referred to as the hammer drill) the size and location Tolerance, appearance and surface roughness, and material hardness, performance testing, marking and packing of the basic requirements.

This section applies to drilling diameter in brick, masonry and light wall materials such as 4mm ~ Rotary and rotary impact type of rigid 25mm Alloy construction workers drilling. This section does not apply to a rock bit. Its clauses include symbol.

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Document preview — GB/T 6335.2-2010

National Standard of the People's Republic of China

ICS: 25.100.30
Classification: J 41
Replacing: GB/T 6335.2-1996

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 Normative references
3 Symbol
4.1 size and position tolerances

1 Scope

GB/T 6335 provisions of this part of the Rotary and rotary impact masonry drill bits carbide (hereinafter referred to as the hammer drill) the size and location

Tolerance, appearance and surface roughness, and material hardness, performance testing, marking and packing of the basic requirements.

This section applies to drilling diameter in brick, masonry and light wall materials such as 4mm ~ Rotary and rotary impact type of rigid 25mm

Alloy construction workers drilling. This section does not apply to a rock bit.

2 Normative references

The following documents contain provisions by GB/T 6335 this part of the reference in terms of this section. For dated reference documents

Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section

Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

GB/T 6335.1 Rotary and rotary impact masonry drill bits with hardmetal tips - Part 1. Size (GB/T 6335.1-2010,

ISO 5468.2006, Rotaryandrotaryimpactmasonrydrilbitswithhardmetaltips-Dimensions, MOD)

GB/T 18376.2 carbide grade Part 2. geology, mining tools with carbide grade

3 Symbol

d --- Impact Drill diameter;

l --- overhang.

4. Technical Requirements

4.1 size and position tolerances

Hammer drill size should be consistent with the provisions of GB/T 6335.1, the position tolerances according to Table 1.

Table 1 millimeters

Item d

<=50 > 50 ~ 100 > 100 ~ 200 > 300 ~ 400 > 400 ~ 550

Radial shank positioned round the axis of the tool body

Runout

4-8 1.0 1.5

> 25 ~ 8 1.5

Cylindrical carbide blade of the cutter body axis

The Symmetry

4-6 0.20

> 0.35 6-8

> 8 ~ 16 0.50

> 16 1.00

The cutting edge of the cutter body axis oblique circle beat

4 ~ 25 0.50

NOTE. Drills shock tolerance position detection method in accordance with Appendix A.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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Editions of GB/T 6335.2

Edition	Title	Revision	Status
GB/T 6335.2-2010	Rotary and rotary impact masonry drill bits with hardmetal tips Part 2: Technical specifications	current edition	Current
GB/T 6335.2-1996	Rotary and rotary impact masonry drill bits with hardmetal tips Part 2: Technical specifications	previous edition	Superseded

This page sells the current edition, GB/T 6335.2-2010. Earlier editions are listed for reference only.

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