170-25 straight column cutting tooth high wear in resistance gold head coal mining machine excavator accessories

Description :

  The 170-25 straight column cutter is a core rock breaking tool designed specifically for heavy mining machinery such as coal mining machines and tunneling machines. This product is mainly used for coal mining, tunnel excavation, and rock crushing conditions, breaking coal and rock masses through high-frequency impact and shear action. Its structure adopts a straight column design, with uniform force distribution, and can effectively resist bending stress and impact loads during operation. As a vulnerable component, the performance of 170-25 straight column cutters directly determines mining efficiency and equipment operating costs. It is suitable for medium to hard rock geological conditions and is a key component to ensure continuous operations.

  The main body of this model of gear cutter is usually made of high-quality alloy structural steel (such as 35CrMnSi or 42CrMo), which is subjected to overall quenching and tempering treatment to achieve good strength toughness matching. The head is embedded with hard alloy teeth (i.e. "alloy beans"), which are connected using high-frequency induction brazing or salt bath brazing processes to ensure high bonding strength and prevent tooth detachment. In the 170-25 specification, "170" represents a total length of approximately 170mm, and "25" represents a handle diameter of approximately 25mm. The surface has undergone special wear-resistant treatment or sprayed with a wear-resistant layer to further enhance its ability to resist abrasive wear. The product complies with relevant mining machinery industry standards such as MT/T239, with strict control of dimensional tolerances to ensure a tight fit with the tooth seat.

  When selecting, it is important to carefully check the installation hole spacing, handle diameter, and total length. The 170-25 straight column tooth should be compatible with a standard 25mm diameter tooth seat. If the working condition is extremely hard rock or quartz sandstone, it is recommended to choose a configuration with a larger alloy head diameter or higher tungsten carbide content; If it is soft coal or mudstone, conventional configuration can meet the demand. Compared with ordinary conical cutters, straight column cutters have better guidance, smaller deflection angles, and are suitable for straight cutting trajectories. Before procurement, it is necessary to confirm the specific requirements of the equipment model (such as MG series coal mining machine, EBZ series tunneling machine) for the specifications of the cutting teeth, in order to avoid installation failure or early failure due to size deviation.

  Before installation, check whether the tooth seat is deformed or excessively worn to ensure smooth insertion of the cutting teeth and secure fixation of the snap spring. During operation, the spray dust suppression system shall be kept normal, which is environmentally friendly and cools the pick to prevent annealing of alloy head or weld cracking due to high temperature. Regular inspections are required for daily maintenance. If the alloy head cracks or wears to the substrate or tooth body, it should be replaced immediately to avoid damaging the tooth seat. When storing, it should be kept dry and ventilated to prevent rust from affecting the accuracy of the fit. Proper installation and maintenance can significantly extend the service life of 170-25 straight column cutters and reduce the cost of coal consumption per ton.

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