语言切换

Language

News

Home page

全部分类

How to choose a hollow drill bit

Release time:

2019-08-23

Hollow drill bits are also called core drill bits, magnetic drill bits, magnetic base drill bits, hole openers, drill bit categories: high-speed steel drill bits, carbide drill bits, tungsten steel drill bits; cutting depth: 35MM, 50MM or 100mm; specifications: 12MM to 160MM; the main materials of drill bits are high-speed steel; powder metallurgy; carbide. Suitable for motors: magnetic drill/magnetic base drill/drilling machine/lathe/milling machine, complete types and specifications, suitable for various brands of imported magnetic base drills (magnetic drills) and general drilling machines, milling machines, boring machines, etc. This product is used in conjunction with imported magnetic base drills, and the drilling efficiency is 8 to 10 times that of ordinary drills.

Hollow drill bit is also called core drill bit, magnetic drill bit, magnetic base drill bit, hole opener,

Drill bit classification: high-speed steel drill bit, carbide drill bit, tungsten steel drill bit;

Cutting depth: 35MM, 50MM or 100mm;

Specifications: 12MM to 160MM; drill bit

The main materials are high speed steel, powder metallurgy and cemented carbide.

Suitable for electric motors: magnetic drill/magnetic drill/drilling machine/lathe/milling machine, with complete types and specifications, suitable for various brands of imported magnetic drill (magnetic drill) and general drilling machine, milling machine, boring machine, etc.

This product is used in conjunction with imported magnetic drill bits, and its drilling efficiency is 8 to 10 times that of ordinary drill bits.

Commonly used shank types for hollow drill bits: straight shank, universal shank, Nitto shank, and Harmonic shank.

As the name implies, it is a drill without a core. It is named after the result of the cutting tool. People have used twist drills as cutting tools for more than 100 years. Since the core of the twist drill is completely at a negative cutting angle, the cutting resistance is very large, so 50%-60% of the cutting force of the twist drill is caused by the core of the drill. In addition to the above factors, it is impossible to make a twist drill very large. To process larger and deeper holes, it is necessary to start from drilling small holes and expand them step by step until the hole size reaches the required size.

The advent of hollow drills has expanded the cutting range of drills. Large and deep holes can be processed using relatively small power. The size of hollow drills can also be made very large. Only better or better steel is used on the cutting ruler. This not only reduces the processing cost, but also makes the processing technology that was thought to be impossible possible.

Hollow drill bit specifications

The small specifications of the hollow drill bit are: diameter 12mm, drilling depth 25mm, cutting depth 35mm

Hollow drill bit is also known as core drill bit, hole opener, center drill bit, steel plate drill bit, magnetic drill bit, rail drill bit, etc.

The specifications of hollow drill bits are:

1. The smallest diameter is 12mm and the largest can be 160mm;

2. The drilling depths are 25mm, 35mm, 50mm, 75mm, 100mm, etc.;

3. Cutting depth is 35mm: diameter ranges from 12mm to 50mm.

Cutting depth is 50mm: diameters range from 12mm to 160mm.

Cutting depth is 75mm: diameters range from 16mm to 160mm.

Cutting depth is 100mm: diameters range from 18mm to 160mm.

Salesman two-dimensional code

Business License