A gun drill is mainly composed of a drill head, a drill rod and a drll handle. It has the following advantages:
1. High processing accuracy and good economic performance;
2. High stability of cutting performance;
3. Small deviation of the center line;
4. Excellent drilling quality and chip removal performance;
5. High processing efficiency;
6. The tool length can be customized according to customer requirements, with the longest reaching 6000mm;
7. It can be used on ordinary horizontal, vertical machine tools and machining centers;
8. The drill tip of the tool head can be repaired multiple times.
The working principle of a gun drill is that coolant is supplied to the cutting area through the cooling channels Inside the tool, then the coolant and chips are discharged through the V-shaped channel formed between the processed hole and the drill rod. At the same time, the cutting fluid also provides lubrication for the outer cylindrical part of the drill bit.
When the processing depth of holes with diameters ranging from φ2.0 to φ50mm reaches or exceeds 10 times the diameter, it ts advisable to consider using a gun drill. Using a gun drill can achieve precise processing results. The holes produced have accurate positions, high straightness.
coaxiality, and excellent surface finish. It is also convenient for processing various types of deep holes. For special deep holes, such as cross holes, blind holes, and flat-bottom blind holes, it can also be well handled.
The diameter ranges from φ2.0 to D. Since the total length of the gun drill can reach 6000mm. in order to ensure the stability of the processing, the tool must have multiple supports, and the distance between the supports should not be greater than 40-50 times the diameter of the gun drill.
SPEC
|
Material |
Solid tungsten carbide head + steel rod |
|
Coating |
Uncoated or Coated |
|
Chemical Composition |
10% Co & 90% WC |
|
Grain Size |
1.2 μm |
|
Hardness (HRA) |
≥90 |
|
Magnetic Force |
23 (KA/M) |
|
T.R.S |
3200 (N/mm2) |
|
Magnetic Saturation |
10.3 (Ms) |
|
Purpose |
kind of tool to drill the hole |
|
Density |
14.05 (g/cm3) |
Tungsten Cemented Carbide Grade
Main
Hot Products
Company Information
Kunshan Zhiyi Dingli Cemented Carbide Tool Co., Ltd. offers deep hole drilling expertise from our Suzhou facility, specializing in gun drills up to 6000mm in length. Our gun drills achieve excellent straightness and surface finish in holes from 2.0mm to 50mm. We serve the hydraulic cylinder, oilfield equipment, and aerospace sectors where deep-hole accuracy is mission-critical.
Our gun drills serve deep-hole drilling operations in over 15 countries, including major oil and gas equipment manufacturers in the United States, Middle East, and Southeast Asia. We offer free technical consultation on deep hole drilling process optimization.
Production Flow Chart
Packing & Delivery
Packing
1>Put the goods encased with plastic bag or plastic case in wooden box/carton/iron box,etc.
2>Other packing will be accept according to your needs.
FAQ
Q1: What is the maximum drilling depth?
A1: Up to 6000mm total length with practical drilling depth around 5000mm depending on diameter and material.
Q2: What surface finish can be achieved?
A2: Typically Ra 0.4 to 0.8 microns under proper conditions. As fine as Ra 0.2 microns with optimized parameters.
Q3: Can you supply gun drill bushings?
A3: Yes, matching bushings and support guides with support spacing no greater than 40 to 50 times drill diameter.
Q4: How many times can the tip be reconditioned?
A4: The carbide drill tip can be reconditioned 3 to 5 times. The steel rod body lasts much longer.
Q5: Can gun drills handle blind holes and cross holes?
A5: Yes, with specialized tip geometry and modified coolant flow. Please provide hole geometry details.
About Color Aberration
Product pictures are all physical photography, due to photo-taking technology, light, display parameters, etc., there may be differences between the received physical objects and photos, please refer to the physical.
Cargo Receipt
All our products go through strict inspection and count before shipment. Please check the goods in person when they receive them.
Please refuse to sign and contact us if you find that the CTN number and model is wrong or the product is damaged in transit.
Hot Tags: gun drill & deep hole drill, China gun drill & deep hole drill manufacturers, suppliers, factory
