12 1/4inch Replaceable Tricone Bit Cutter Plam

12 1/4inch Replaceable Tricone Bit Cutter Plam: Disclosed is a deslagging type palm for a tricone bit, comprising a threaded cone back, a palm back and a shaft head . The threaded cone back, the palm back and the shaft head are successively connected, wherein the palm as a whole has a streamline shape, the palm back and two sides of the palm are all provided with a deslagging groove , and the two sides and the palm back of the palm respectively have at least one chip discharging groove. The edge of the chip discharging groove has a streamline shape and the groove is a curved groove or an arc-shaped groove. The lower edge of the chip discharging groove of the palm back of the palm is divided into three segments, wherein one segment forms an angle between 20-50° with a horizontal surface of the palm, the middle segment is arc-shaped, the final segment and the horizontal surface of the palm are in parallel.