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A surface grinder is a machine used to obtain a smooth surface on metal workpieces. Large surface grinders are similar to surface grinders but larger and more powerful. They also come in several types, including:
One of the things that make large floor surface grinders stand out is their specifications. With various specifications, buyers can get machines that meet their needs perfectly. Large surface grinders have a three-phase motor with a power rating of 7.5 kW. Its voltage is usually between 380 to 440V, and the frequency is 50 to 60 Hz. The machine motor runs at a full-load speed of 1470 RPM. Some manufacturers make motors with variable speeds controlled with an inverter/ driver.
The grinding wheel has a size of 250mm x 25mm (10” x 1”). Some manufacturers customize the size to 300mm (12”) or 350mm (14”). The grinding head weighs about 2.5kg (5.5 lbs). There are different types of grinding heads, such as diamond grinding heads and rubber pads with a backing plate.
The floor surface grinders' fuel type is gasoline, diesel, or electric, depending on the manufacturers and buyers' choices. The disc type can also be customized, such as a diamond disc, resin disc, or rubbber disc. Their outer diameter differs from 100mm to 350mm (4” to 14”). Different handle types and telescopic handle height will vary in length and height.
Large surface grinders need regular maintenance to operate perfectly. Some maintenance tips include regularly cleaning the machine surfaces to remove dust and debris. Lubricating the moving parts of the machine is also necessary to ensure a smooth operation. Regularly inspecting the grinder will help users identify parts in need of repair or replacement, such as grinding wheels and bearings.
Precision is core business in the auto industry, which is why large surface grinders are the backbone of this industry. All parts need to be perfectly flat for the least possible surface contact and friction to reduce wear and tear.
The same is true for the aerospace industry, which uses grinding machines of a different scale to achieve very light, smooth, and flat parts that fit together. Without large surface grinders, planes would not be able to fly.
Tool and die makers rely heavily on large surface grinders to ensure that molds, tools, cutting blades, and dies fit together less tightly for greater efficiency. The military also utilizes grinders to achieve faultless parts in military tanks, vehicles, and equipment, especially anything that uses an aircraft.
Large surface grinders are also crucial to achieving precision in the furniture, electronics, and metalworking industries. Without them, these industries would be compromised, and faulty products would be released into the market.
Industrial surface grinders for sale come in many different types, all of which serve functions to cater to specific needs. When deciding what models to stock, it is essential to conduct a thorough target market analysis to determine the needs of the customer base. Some of the key factors to consider when doing the analysis include the following:
Working Terrain/Materials
A majority of the surface grinding machines are manufactured for use on metal workpieces. Nonetheless, metals differ greatly in density and thickness, and some alloys are more challenging to work with than others. For example, aluminum alloys feature a less dense molecular structure than ferrous metals like stainless steel, which have a higher density. As a result, the surface grinder machine employed to grind aluminum will differ from that used to grind iron or stainless steel.
Fixing Method
When working with large and heavy workpieces, the fixation method becomes as important as the grinder itself. Such workpieces are generally cumbersome and thus require more complicated fixation techniques to keep them stationary as they undergo the grinding process. The customer base is likely to be split between those wanting to use magnetic taps and those desiring mechanical clamps. Surface grinders with mechanical clamps are more common in metal workshops that grind large stainless steel plates. Magnetic clamps are widely used in schools' STEM programs, where students are tasked with various engineering projects that involve grinding various materials.
Desired Precision
A major distinguishing factor between surface grinders is the precision they are designed to achieve. Some machines work fine tolerances of up to 0.001 mm, while others have lower precision. Generally, a more precise grinder will have a higher spindle speed, while less precise grinders will have lower spindle speeds.
Available Space
Large surface grinders are generally more massive than their small counterparts. When choosing models to stock, it would help to determine the space one's target market has to accommodate large grinding machines. Generally, businesses with limited space prefer machines with smaller footprints that can easily be integrated into existing production lines with minimal disruption.
Q1: What are the main advantages of surface grinding machines?
A1: Surface grinders are milling machines that can produce high-quality finishes on large workpieces by ensuring uniformity throughout the entire surface. They are also excellent at removing a large material from workpieces. Surface grinders have a relatively low initial cost compared to other milling machines. Advanced automatic models are available but also have the option of being operated manually, making them more affordable than fully automated machines.
Q2: What are the limitations of large surface grinders?
A2: Surface grinders cannot be used for irregularly shaped workpieces, and their accuracy is limited to flat surfaces. Large grinders also have a fixed spindle speed, which may not be suitable for some materials.
Q3: Are large surface grinders safer than other grinding machines?
A3: Many manufacturers are now making large surface grinders with safety features like emergency stop buttons, adjustable grinding head covers, and anti-restart systems that prevent the accidental start of the grinder while changing blades. Surface grinding machines are generally safer than cylindrical grinding machines because the operator does not have to feed the workpiece into the revolving wheel.
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