Who made the first cordless grinder?

Angle grinders have a long and rich history dating back to early 20th century Germany. These versatile power tools first emerged around , though different accounts point to different inventors. They were initially created to cut difficult metals that were nearly impossible to work with using standard tools at the time.

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The high-speed angle grinder as we know it today was invented in by the German company Ackermann+Schmitt (now FLEX-Elektrowerkzeuge GmbH) in Steinheimander Murr. This innovation revolutionized metalworking and popularized angle grinders, bringing them into workshops and construction sites around the world.

Over 69 years, angle grinders have become one of the most ubiquitous power tools used today. There are many brands for consumers to choose from, though the largest manufacturers are still concentrated in Germany and China, such as Bosch, FLEX, and Kynamco.

Another account credits American inventor Louis Lincoln Beach with creating the first angle grinder in . Beach wanted a quieter and more precise tool than standard circular saws, so he developed an attachment for circular saws that led to the angle grinder. His invention started being sold commercially in for cutting stair railings, and other companies soon copied his design.

According to a third story, the angle grinder has its origins in when an inventor created a tool to more easily make milkshakes while working in a restaurant. The tool was quickly adopted by metalworkers and farmers to grind and sharpen. These early angle grinders eventually evolved into the popular power tools we know today.

In the early s, companies worked to develop safer and more portable angle grinders and rotary tools, the precursors to modern angle grinders. Notable inventions include the Rutland Tool in and adjustable-jaw grinders in that allowed users to set the head at different angles. Electric models also started being sold for industrial and home use.

As power tools became more available and affordable in the 20th century, the popularity of angle grinders also grew. New technologies like cordless angle grinders have made these tools even more functional and versatile. Today, angle grinders are used in many industries and home improvement projects and continue to improve through innovation.

Over the past century, the angle grinder has experienced a fascinating evolution. From its origins in Germany and the U.S. to how it has become an indispensable tool around the world, the history of this ubiquitous power tool tells a story of industrialization, innovation, and revolution. The high-speed angle grinder pioneered new possibilities in metalworking and shaped how we build in the 21st century.

Today, many well-known power tool brands offer angle grinders in different sizes and specifications, such as 4-inch, 5-inch, 7-inch and 9-inch models with motor power up to W or even higher. Major angle grinder manufacturers have gradually shifted production from Europe and North America to China due to its competitive manufacturing costs and capability.

Reputable Chinese brands include BOSCH, Makita, Dewalt, FLEX, KYNKO, etc. Among these brands, KYNKO specializes in industrial heavy-duty angle grinders and has over 30 years of experience as an original design and equipment manufacturer. KYNKO produces angle grinders of different sizes, from 100mm to 230mm, that demonstrate high power, durability and performance.

KYNKO is a leading OD&OEM angle grinder manufactuer in China with 30 years experience. Which mainly produce Industrial Professional class heavy-duty angle grinder with variety size.

Below we show 2 models of our angel grinder:

100/115/125mm angle grinder

100/115/125MM easy to grasp with slim body.

It is professional class angle grinder and for heavy duty work.

It's mainly used for cutting&grinding work.

Using NMB + NSK bearing,long life span.

180/230mm angle grinder

180/230MM angle grinder with CB, CCC, CE, etc. certificate. /W strong power

It is industrial professional class and heavy duty angle grinder.

Application: Metal, stone, tile.etc tile, cutting&grinding.

FAQ:

Q: What sizes of angle grinders are available?

A: Angle grinders come in a variety of sizes to suit different applications. Common sizes include:

&#;110mm (4.5 inches) - well suited for cutting and grinding small workpieces. Light and compact.

&#;125mm (5 inches) - versatile and suitable for most DIY cutting and grinding tasks. Good power-to-size ratio.

&#;150mm (6 inches) - larger grinder good for heavy-duty jobs where more powerful cutting and grinding is needed.

&#;180mm (7 inches) and 230mm (9 inches) - powerful grinders used for industrial applications like foundries and steel fabrication.

Are you interested in learning more about Cordless Angle Grinder Manufacturer? Contact us today to secure an expert consultation!

Q: What is the MOQ (minimum order quantity) for angle grinders?

A: The MOQ for KYNKO brand angle grinders is 50 units. For OEM (original equipment manufacturer) angle grinders, the MOQ is units.

Q: Can I get angle grinder samples to test?

A: Yes, we provide product samples of our angle grinders for testing and evaluation. Please contact us with your product specifications and request details. We would be happy to provide samples so you can rigorously test the performance and quality of our angle grinders before placing an order.

Handheld power tool for cutting or polishing

An angle grinder, also known as a side grinder or disc grinder, is a handheld power tool used for grinding (abrasive cutting) and polishing. Although developed originally as tools for rigid abrasive discs, the availability of an interchangeable power source has encouraged their use with a wide variety of cutters and attachments.

Angle grinders can be powered by an electric motor or compressed air. The motor drives a geared head at a right-angle on which is mounted an abrasive disc or a thinner cut-off disc, either of which can be replaced when worn. Angle grinders typically have an adjustable guard and a side-handle for two-handed operation. Certain angle grinders, depending on their speed range, can be used as sanders, employing a sanding disc with a backing pad or disc. The backing system is typically made of hard plastic, phenolic resin, or medium-hard rubber depending on the amount of flexibility desired.

Angle grinders are used in metal fabrication shops and on construction sites.[citation needed] They are also common in machine shops, along with die grinders and bench grinders.[citation needed]

Safety and health

The use of an angle grinder in cutting is not preferred as large amounts of harmful sparks and fumes (and particulates) are generated when compared with using reciprocating saw or band saw.[1] Angle grinders produce sparks when cutting ferrous metals. They also produce shards cutting other materials. The blades themselves may also break. This is a great hazard to the face and eyes especially, as well as other parts of the body, and as such, a full face shield and other protective clothing must be worn. Angle grinders should never be used without their guard or handle attached. All workpieces should be securely clamped or held firmly in a vise.[2] Through a sound pressure level and vibrations study conducted by the National Institute for Occupational Safety and Health, grinders under an unloaded condition ranged from 91 to 103 dBA.[3]

Regulation

Uses

Angle grinders may be used for removing excess material from a piece. There are many different kinds of discs that are used for various materials and tasks, such as cut-off discs (diamond blade), abrasive grinding discs, grinding stones, sanding discs, wire brush wheels and polishing pads.[citation needed] The angle grinder has large bearings to counter side forces generated during cutting, unlike a power drill, where the force is axial.

Angle grinders are widely used in metalworking and construction, emergency rescues and even for bicycle thefts. Generally, they are found in workshops, service garages and auto body repair shops. There are a large variety of angle grinders to choose from[peacock prose] when trying to find the right one for the job. The most important factors in choosing the right grinder are the power source (battery, corded or pneumatic) and the disc size. Other factors include power of the motor, rpm, and arbor size. Generally disc size and power increase together. Disc size is usually measured in inches or millimetres. Common disc sizes for angle grinders in the United States include 4, 4.5, 5, 6, 7, 9 and 12 inches, with the most popular sizes being the 4.5 and 5" size. In Europe the most common sizes for angle grinder discs are 115 and 125 millimeters. Discs for pneumatic grinders also come much smaller. Pneumatic grinders are generally used for lighter duty jobs where more precision is required. This is likely because pneumatic grinders can be small and light yet remain powerful, because they do not contain heavy copper motor windings, while it is harder for an electric grinder to maintain adequate power with smaller size. Electric grinders are more commonly used for larger, heavy duty jobs. However, there are also small electric grinders and large pneumatic grinders.

Angle grinders have been used to remove wheel clamps from vehicles.[4][5]

History

The high-speed angle grinder was invented in [6] by German company Ackermann + Schmitt (FLEX-Elektrowerkzeuge GmbH) in Steinheim an der Murr.[7] Owing to this, in German, Dutch, Slovak, Czech, Polish, Croatian, Romanian, Hungarian, Bulgarian and Latvian, an angle grinder is colloquially called just a "flex", in Italy and in Spanish-speaking countries it is sometimes called "flexible". In Switzerland it is known as "Perles" from a popular brand of cutting tools. In Polish it is also known as "kątówka"[8] or "gumówka"[9] (= the rubber thing), which refers to the elasticity of certain types of disks. However they are never made out of true rubber due to fire hazard. In Russian, it is known as "&#;&#;&#;&#;&#;&#;&#;&#;" ("bolgarka")[10] (literally "Bulgarian" of the feminine gender), since the first angle grinders in the USSR were Bulgarian made.[11]

See also

References

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