135-30 straight column wear-resistant layer cutting tooth alloy bean reinforcement coal mining machine tunneling machine accessories

Description :

  The cutting tooth 135-30 straight column is a key vulnerable component on mining machinery equipment such as coal mining machines and tunneling machines, mainly used for crushing and cutting operations in coal, rock, and semi coal rock tunnels. This model of gear adopts a straight column structure design, combined with high-strength alloy heads, which can effectively solve the problems of fast wear and high fracture rate of the gear seat under hard rock working conditions. Its core function is to strip large coal and rock blocks through rotary cutting, suitable for mining environments with medium to hard rock layers, ensuring continuous and efficient operation of machinery, reducing downtime and replacement frequency, and is an indispensable basic consumable material in mining engineering.

  The specification parameters of the 135-30 straight column of the cutting tooth strictly follow the standards of mining machinery accessories, with a total length usually around 135mm and a handle diameter that fits a 30mm tooth seat hole. The main material is selected from high-quality alloy structural steel, which has undergone overall quenching or tempering treatment. The substrate hardness reaches HRC45-50, ensuring sufficient bending strength. The head is embedded with hard alloy balls (alloy beans) and connected using high-frequency induction brazing technology. The weld seam is full without pores and has high bonding strength. The wear-resistant layer has undergone special surface treatment, significantly improving its impact toughness and wear resistance, meeting relevant industry standards such as MT/T246, ensuring dimensional stability and service life under harsh working conditions.

  When selecting the 135-30 straight column for cutting teeth, it is important to carefully check the aperture and depth of the equipment tooth seat to ensure that the 30mm handle can be smoothly inserted and securely fixed. This model is suitable for coal mining machine drums or tunneling machine cutting heads equipped with corresponding gear seats, especially suitable for formations with strong abrasion such as quartz sandstone and limestone. If the working condition is extremely hard rock layer or there are a large number of interlayers, it is recommended to check whether the protrusion height and angle of the alloy head match; For soft coal seam mining, although it can be used, energy consumption may increase due to excessive penetration. Compared with conical cutters, straight column cutters focus more on radial cutting force, and the installation direction needs to be confirmed based on the arrangement of the drum spiral line when selecting.

  Before installing the cutting tooth 135-30 straight column, clean the coal powder and rust in the tooth seat hole, and apply an appropriate amount of lubricating grease for disassembly. Use specialized snap springs or retaining rings to secure, ensuring that the cutting teeth can rotate freely within the tooth seat, avoiding the formation of a "flat head" due to single-sided wear and accelerating failure. In daily maintenance, it is necessary to regularly check for missing teeth and alloy head detachment. If wear exceeds 10% of the original diameter or the alloy head cracks, it should be replaced in a timely manner to avoid damaging the tooth seat body. Common faults include handle fracture and alloy head detachment, often caused by overload impact or welding defects. Maintaining a reasonable traction speed and cutting thickness can extend its service life.

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