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High-grade alloy hole opener

Product Detail

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Effective working length of 25MM, it can process thick steel plates and perforate curved surface materials such as thick-walled metal pipes. When cutting chilled materials, the temperature of the cutting edge should be filled with coolant.

The cutting edge is formed at one time by a fully automatic CNC grinder. It has high precision, the alloy cutting edge is not easy to fall off, the cutting edge is sharp, the cutting is light, the edge of the hole is free of burrs, smooth, and not concave.

The hole opener is made of cemented carbide, the design is novel, reasonable, and the lengthened type

It can be clamped on jackhammers, bench drills or other machines. The drilling is light and fast, and the drilling is stable and labor-saving.

The diameter of the drilled hole is smooth and correct, and it can be used for metal drilling of thick cast iron, thick steel plate, thin stainless steel, thick non-standard iron, etc.

Suitable for drilling various metal plates such as stainless steel plate, section steel, castings, aluminum alloy, iron plate, stainless steel, etc.

Can be installed on three-jaw chuck equipment such as electric drills, aircraft drills, bench drills, etc.

Six characteristics

Applicable machine

Flat brick processing equipment

Applicable  (2)


Square handle four pit electric hammer drill

(square handle not available)

Applicable  (1)


Electric hammer drill with round handle, two pits and two grooves

Installation procedure of hole opener



Install the center drill into the extension rod



Insert the center drill to the bottom



Put screws into the connecting rod.



Tighten the set screw with a wrench



Put the hole opener into the connecting rod



Tighten the hole opener and extension rod

Three groups of different blades are designed in layers, and the cutting resistance is small

Chip removal is smoother, cutting is stable, and drilling is smooth

Suitable speed

1.According to the different materials and tool specifications, please select the appropriate speed.
2.In continuous cutting, please choose a lower speed.


Cycle speed

stainless steel Ordinary steel lAluminum plate
20-35m/min 40-60m/min 60-100m/min


1. Check the integrity of the hole drill before use.
2. The three sides of the corresponding handle should be clamped when the hole drill is installed in the electric drill.
3. Keep the verticality of the hole drill and the workpiece when drilling the hole.
4. Use a small feed force when starting drilling, and use a medium feed force after positioning.
5. During drilling operation, the speed should not be too low to avoid jamming of the knife edge and causing tool collapse.
6. When the center drill drills through the workpiece, the force should not be too large to avoid violent collision between the blade and the workpiece.
7. After the hole drill drills through the workpiece, the hole drill should be withdrawn from the workpiece while the hole drill is rotating.
8. When continuously drilling holes, use cutting fluid to cool the cutting edge.

Detail highlights

Three blade combined tooth profile

The tooth shape of the cutting edge is composed of the inner edge, the middle edge and the outer edge, which reduces the probability of tooth breakage,

Small cutting power, smooth chip removal and long service life.

Detail highlights

It is widely used

For stainless steel, I-beam, bridge, Tong, aluminum alloy

Iron, glass fiber reinforced plastic and other metals, with bench drill can open 2-25mm thickness


There are pictures, there are real fashion!

Whether the quality is good or not is up to the buyer


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