Power Tools 100% Satisfaction Twist Cobalt Drill Bits

• Customization: Available
• Customized: Non-Customized
• Standard: DIN, JIS, AISI, API
• Model NO.: twisted
• Length: Jobber-length
• Type: Twist Drill Bit
• Material: High Speed Steel
• Usage: Wood Drilling, Metal Drilling, Masonry Drilling
• Color: Silver/Gold
• Brand: OEM Production
• Size: 3.2mm - 13mm
• Features: Twisted
• Transport Package: Nude
• Specification: 1/8, 5/32, 3/16, 1/4, 5/16, 3/8, 1/2
• Trademark: 7H PLUS / FUWALLS / GUORUI
• Origin: Shandong China
• HS Code: 8207504000
• Production Capacity: 10000

Product Description

Product Description

 

A drill bit is a cutting tool used in a drill to remove material to create holes, almost always of circular cross-section. Drill bits come in many sizes and shapes and can create different kinds of holes in many different materials. In order to create holes drill bits are usually attached to a drill, which powers them to cut through the workpiece, typically by rotation. The drill will grasp the upper end of a bit called the shank in the chuck.

Drills come in standardized drill bit sizes. A comprehensive drill bit and tap size chart lists metric and imperial sized drills alongside the required screw tap sizes. There are also certain specialized drill bits that can create holes with a non-circular cross-section.

 

Detailed Photos

 

 

• The point angle, or the angle formed at the tip of the bit, is determined by the material the bit will be operating in. Harder materials require a larger point angle, and softer materials require a sharper angle. The correct point angle for the hardness of the material influences wandering, chatter, hole shape, and wear rate.

• The lip angle is the angle between the face of the cut material and the flank of the lip, and determines the amount of support provided to the cutting edge. A greater lip angle will cause the bit to cut more aggressively under the same amount of point pressure as a bit with a smaller lip angle. Both conditions can cause binding, wear, and eventual catastrophic failure of the tool. The proper amount of lip clearance is determined by the point angle. A very acute point angle has more web surface area presented to the work at any one time, requiring an aggressive lip angle, where a flat bit is extremely sensitive to small changes in lip angle due to the small surface area supporting the cutting edges.

 

Applicable

 

FAQ

1.What is your advantage ?

Great products with competitive and professional service on export business 

2. Can you give warranty of your products ?

Yes, we are sure our quality .If any concern may contact us directly 

3. How could we believe your company ? 

We consider honesty as the core of our company 

4. How is the delivery time ?

Once receive done payment ,within one week will arrange the delivery .

5. What is your payment terms ? 

T/T 30% advance, and balance payment once finish production .