Universal Tool Grinder

The motor could be rotated in 360°, increasing the grinding range. With variety of option attachments (such as 50B, 50C, 50D, 50E, 50K, 50H, 50S, etc.) could be provided for different purposes, grinding fast with high accuracy.

Universal Cutter Grinder

This is a smart universal cutter grinder; mainly used for Drills, Step drills, NC Drills, Screw Taps, Counter Sink Drills, End Mill Lips, Round Bars, and Gravers. Its main advantage is the sharpening graver.

Drill Bit Grinder

The portable electric drill bit grinder is a most popular grinder by our clients, with advantages such as convenient design, easy to operate, economical price, grinding fast and high accuracy, and low maintenance.

End Mill Grinder

End Mill Grinder can be used for grinding end mill and ball end mill, which grinding 2-flute, 3-fulte, 4-fulte end mills are available, two types of grinding wheel for choice: SDC and CBN.

Screw Tap Grinder

Screw tap grinder can be used to sharpen front angle freely, with Taiwan diamond wheel that keeps accurate angle after grinding and long service life, simple to set up, easy to operate.

Lathe Tool Grinder

Lathe Tool Grinder can be sharpened lathe tungsten carbide/HSS cutter, CNC lathe carbide turning insert, and etc. High precision and simple operation is an ideal machine for replacing traditional grinding by hand.

WHAT WE OFFER

TOP 6 REASONS TO CHOOSE OUR PRODUCTS

1

The ‘Grinder’ brand is the sub-brand of PURROS Machinery Co., Ltd., which is deeply trusted by clients, and it is known around the world in grinder industry.

2

We have been focusing on the R&D of grinding machine over 12 years of experience, and designed more than 5000 grinders.

3

More than 1200 clients have been served worldwide by our company, solved the key problems for our clients that grinding must be a highly skilled, and low accuracy by hand.

4

Over 50 distributors worldwide, mutual benefit and win-win result is the business principle we insist on, shared values brought us together, and deeply rooted in the grinding industry.

5

The global network provides clients with one-stop drill grinding solutions; good service wins a good business future.

6

PURROS’s sense of worth: Make the grinding work easy, and to become a global leader in the grinder industry. Work together to create the future!

Several forms of wear by which a drill bit is worn

The drill bit is semi-closed cutting, and the heat of drilling is difficult to spread outward, so it is easier to form a high cutting temperature. Therefore, the main cause of bit wear is thermal wear, for high-speed steel bit, mainly phase change wear. In addition, there are contact fatigue, excessive deformation, edge breaking, brittle […]

Methods of drilling twist drill and points for attention

Drilling methods: Before drilling, the workpiece plane should be leveled. No convex platform is allowed in the center to facilitate the correct centering of the twist drill.  Align the tailstock so that the center of the twist drill is aligned with the axis of rotation of the workpiece. Otherwise, the diameter of the hole may […]

Selection of Cutting Fluid in Drilling

Selection of Cutting Fluid in Drilling   Material for twist drills Material to be drilled low carbon steel medium-carbon steel hardened steel High Speed Steel Twist Drill Use 1%~2% low concentration emulsifier, electrolyte aqueous solution or mineral oil Use 3%~5% medium concentration emulsifier or extreme pressure cutting oil Use extreme pressure cutting oil Cemented carbide […]

How to grind the worn bit by hand?

How to grind the worn bit by hand? First of all, we should observe the wear of the two main cutting edges of the drill. If the degree of wear on both sides is different, the wear on one side is slightly higher than that on the other. More attention should be paid to grinding. […]

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