135-30 straight column cutting teeth thickened wear-resistant layer coal mining machine excavator accessories

Description :

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135-30 straight column cutter is a core cutting tool designed specifically for heavy-duty mining machinery such as coal mining machines and tunneling machines. This category is mainly used for crushing rocks, coal seams, and semi coal rock formations, solving the problems of fast tool wear and frequent replacement under high-intensity operations. Its typical working conditions include hard rock fragmentation during coal mining, tunnel excavation, and road construction. As a consumable, the performance of 135-30 straight column cutters directly determines the overall work efficiency and operating costs of the machine. It is suitable for continuous cutting operations in medium to hard rock formations and is an indispensable key component in mining machinery matching.

  This model of tooth cutter is made of high-quality alloy steel as the base, with a hard alloy blade embedded in the head, and a wear-resistant layer formed by high-frequency quenching or laser cladding process. The "135" of the 135-30 straight column tooth usually refers to a total length of about 135mm, and the "30" refers to a handle diameter of about 30mm. The specific dimensions need to be confirmed according to the drawing. The implementation standard refers to coal industry standards such as MT/T 248, and the hardness usually reaches HRC50-55 or above, with a bending strength not lower than the specified value. The wear-resistant layer has uniform thickness and high bonding strength, ensuring no detachment or cracking during high-speed rotary cutting, ensuring dimensional accuracy and geometric stability, and meeting batch interchangeability requirements.

  When selecting, it is important to distinguish between the applicable scenarios of straight column and conical cutters. 135-30 straight column cutters are suitable for cutting coal seams or soft rocks with relatively uniform cutting resistance and strong abrasion resistance; If encountering uneven joint development or extremely hard rocks, it is necessary to evaluate whether to use conical or special shaped cutters instead. The purchaser should verify whether the aperture of the equipment tooth seat matches the 30mm handle to avoid eccentric wear or detachment due to excessive clearance during fitting. In addition, different grades of hard alloys should be selected based on the rock's Proctor coefficient. If the working conditions contain high abrasive components such as quartz sand, the reinforced 135-30 straight column tooth with a thicker wear-resistant layer should be preferred to extend its service life.

  Before installing the 135-30 straight column tooth cutter, it is necessary to clean the coal powder and rust inside the tooth seat, apply lubricating grease or fix it with a snap spring to ensure that it is installed in place and rotates flexibly. 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 must be replaced immediately in groups to avoid uneven load damage to the tooth seat caused by a single missing piece. Common faults include alloy head detachment and handle fracture, often caused by impact overload or material defects. It is recommended to establish a ledger to record the usage time and wear pattern of 135-30 straight column cutters in each batch, in order to optimize the selection and maintenance cycle and reduce comprehensive energy consumption.

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