Tunnel Boring Machine Cutter Miner Mining Bits Polycrystalline Diamond Tip Pick Coal Cutting Bits
Parabolic button are widely used as gauge buttons and front buttons of DTH bits,suitable for medium abrasive and hard formations.
1. The cutting head is adjustable, so it has the following four advantages:
(1) When the roof will be broken, the space spacing in the middle line of the roadway can be controlled very short, insure achieve high safety;
(2) Only telescopic bolt machine can be properly configured;
(3) When the roadheader is stuck in the mud, self-help can be carried out by stretching the cutting head;
(4) When the floor is broken, it will not aggravate its mud;