Question 1

Do CBN wheels wear out?

Accepted Answer

Holding disc impacting your workpiece

All CBN grinding wheels have a metal disc upon which abrasive material is affixed. As personnel continue to use this grinding wheel it will experience wear and tear.

Question 2

How do I contact superabrasive?

Accepted Answer

If you have any questions regarding warranty, contact Superabrasive at +8617394688408.

Question 3

What is the best grit for CBN wheels?

Accepted Answer

Q: Which Grit CBN wheels should I buy? 
A: That depends on your style. If you reshape tools often or make some of your own tools on occasion, get the 80-grit wheel as your low grit wheel. If you don't do that type of grinding much, then get the 180 grit.

Question 4

Can you grind carbide with a CBN wheel?

Accepted Answer

About grinding Carbide with CBN: CBN is a superabrasive and will grind cemented carbide. To sum up, CBN and Carbide products vary considerably in quality/hardness With a good wheel and average carbide (which is usually the case) intermittent use it can be done, but physics with eventually catch up wear out the wheel.

Question 5

What speeds do CBN grinding wheels run?

Accepted Answer

between 5500- 7500 SFPM

For CBN wheels, we recommend a SFPM speed of between 5500- 7500 SFPM. You can calculate this using the formula below or download the SFPM calculator. Truing and dressing your grinding wheel are two essential actions to perform before executing your first cut. They are also necessary for general wheel maintenance.

Question 6

Can you sharpen carbon steel on a CBN wheel?

Accepted Answer

sharpening, operate your grinder at a slower speed. Min - 1,100 Max - 2,200 rpm. is recommended. used on hardened tool steel and tungsten carbide. Never grind carbon steel, aluminum or other soft metals as it will cause permanent damage to the Flexible CBN wheel.

Question 7

Is higher grit more smooth?

Accepted Answer

The grit is a rating of the size of abrasive materials on the sandpaper. The higher the grit number, the smoother the finish; the lower the grit number, the coarser the finish but quicker the material removal rate.

Question 8

What is the difference between SDC and CBN grinding wheel?

Accepted Answer

Different heat resistance: The heat resistance of diamond SDC grinding wheels is even higher than 800 degrees Celsius. CBN cubic boron nitride can withstand high temperatures of 1250-1350 degrees Celsius.

Question 9

Why is CBN better for machining steel than diamond?

Accepted Answer

The popularity of CBN is due to its hardness, thermal resistance which is higher than diamonds, allowing work at 1900 °C (3500 °F), and the good chemical resistance of CBN to ferrous alloys. CBN is used mainly for grinding high quality tool steels.

Question 10

Can CBN wheels be used with a high speed grinder?

Accepted Answer

CBN does not break down while sharpening steel, and is a superior material for high speed grinding of woodworking tools. CBN wheels have been used in industrial grinding applications for many years.

Question 11

What is the most aggressive metal grinding disc?

Accepted Answer

Diamond and CBN grinding wheels are the most aggressive grinding wheels on the market right now. Both provide dominant performance due to their high stock removal rates and ability to grind the most difficult materials.

Question 12

What Do Grit, Mesh, and Micron Mean?

Accepted Answer

Grit refers to the size of particles embedded in an abrasive material. The higher the grit, the finer the abrasive. There are different standards for grit used internationally and by manufacturers. For example, just because a polish or compound is labeled as 14,000 grit doesn't mean that all its content is that size. It depends on the methods used to make and grade the compound. Some manufacturers use an average particle size and some use a "nothing larger than" standard, and so on. Read the label or ask the retailer if you're not sure of the standard used.
Mesh refers to the number of evenly spaced holes in a screen per square inch. This refers to a traditional technique used to winnow material through a series of screens with increasingly finer mesh sizes. Particles stopped by a screen of a particular mesh were measured by that mesh number.
A micron is a unit (one 10-6 of a meter) used to measure the size of particles in an abrasive material.

Question 13

How do diamond and CBN abrasives compare in hardness?

Accepted Answer

Diamond is harder than CBN at room temperature. CBN is less hard, but it handles heat and chemical stress better. Use diamond for carbide and other non-ferrous materials, and use CBN for hardened steels and similar alloys.

Question 14

Should you use a diamond wheel on steel?

Accepted Answer

Diamond wheels are not the best choice for steel, especially hardened or ferrous steel. For those materials, you should use CBN instead. Diamond wheels perform better on non-ferrous hard materials such as stone, glass, ceramics, and carbide.

Super Abrasive Diamond Corporation

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