Which is better, a straight bit or a cross bit?

The name "cross-shaped drill bit" comes from the fact that a cross-shaped hard alloy blade is welded to the top of the drill bit. Also known as a cross-shaped button bit, the cross-shaped drill bit body is made of 50Cr steel and formed by hot extrusion, with the top blade made of hard and wear-resistant alloy. When it comes to threading, some have threads, while others do not; those without threads are directly connected to the drill rod. Common sizes for cross-shaped drill bits include φ28, φ32, φ34, φ36, φ38, and φ40, with the 40-size being the most commonly used. Cross-shaped drill bits are mainly used in mining, tunnel excavation, and construction projects, allowing for drilling in rock or coal formations without reducing drilling efficiency even when generating large chips. A search for Yimei Machinery Manufacturing Co., Ltd. will provide more information.

The features of cross-shaped drill bits include simple manufacturing processes, easy use, low prices, and strong adaptability to rock conditions. With simple manufacturing processes, easy regrinding, and reliable operation, cross-shaped drill bits are highly adaptable to various rock conditions. They are commonly used with light internal combustion, electric, pneumatic, and hydraulic rock drills to drill holes with diameters below D50mm in various types of rocks. Due to their low cost and other characteristics, cross-shaped drill bits are still widely used in China's mining industry for drilling small and medium-sized rock holes.