135-25 straight column cutting teeth high wear-resistant alloy layer suitable for coal mining machine tunneling machine

Description :

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135-25 straight column cutter is a core cutting tool designed specifically for heavy-duty mining machinery such as coal mining machines and tunneling machines. This model of cutting tooth mainly solves the problems of crushing and excavation in hard rock, semi coal rock, and high wear conditions. Through the combination of high-strength tooth body and wear-resistant alloy head, it achieves efficient rock breaking. The straight column structure design ensures its stability during the rotary cutting process, effectively transmitting torque and resisting impact loads. 135-25 straight column cutters are widely used in coal mining, tunnel excavation, road construction and other fields. They are key vulnerable parts to ensure the continuous operation efficiency of equipment, and their performance directly affects the overall project schedule and operating costs.

  The specifications of 135-25 straight column cutters strictly follow the standards of the mining tool industry. The main body is made of high-quality alloy structural steel through heat treatment process, ensuring that the substrate has high toughness and bending resistance. The tooth head is embedded with a hard alloy wear-resistant layer, with a hardness usually above HRA85, significantly improving the wear resistance of abrasive particles. The diameter and length of the straight column are precisely matched to ensure a tight fit with the gear seat or locking device, preventing loosening and detachment during operation. This product has undergone strict flaw detection and tensile testing to ensure that there are no defects such as cracks or slag inclusions inside. The dimensional tolerance of 135-25 straight column cutting teeth is controlled at the micrometer level to ensure interchangeability and comply with the geometric dimensions and physical performance requirements of mining cutting teeth in GB/T or relevant industry standards.

  When selecting 135-25 straight column cutters, it is important to consider the compatibility between geological hardness and equipment model. This model is suitable for medium to hard rock layers. If the working condition is extremely hard rock or high quartz content formation, it is recommended to choose a higher alloy grade or structurally strengthened variant model; If it is soft coal or soil layer, the more cost-effective ordinary alloy version can be selected. Compared with conical cutters, the straight column design is easier to install and has more uniform force distribution, making it suitable for most drum type coal mining machines. When purchasing, it is necessary to confirm the consistency between the diameter of the tooth seat aperture and the diameter of the cutting tooth handle to avoid early failure due to excessive fit clearance. 135-25 straight column cutters are not suitable for non rotating impact crushing equipment, and the selection should specify that the equipment operates in rotary cutting mode.

  Before installing the 135-25 straight column tooth cutter, the debris in the tooth seat hole should be cleaned, and an appropriate amount of lubricating grease should be applied to reduce assembly resistance and prevent rust. It is recommended to use specialized hydraulic tools or hammer strikes to assist in installation, ensuring that the cutting teeth are at the bottom and the snap spring or locking ring is installed in place. In daily maintenance, it is necessary to regularly check the wear of the cutting teeth. When the alloy head wears down to the substrate or breaks, it should be replaced in a timely manner to avoid damaging the tooth seat. Common faults include alloy head detachment, tooth bending or excessive wear, often caused by overload, excessive impact or material fatigue. Reasonably adjusting the traction speed and drum speed of the coal mining machine can extend the service life of 135-25 straight column cutters, reduce unit consumption costs, and maintain the optimal cutting state of the equipment.

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