Summary of advantages and disadvantages of coarse

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Summary of advantages and disadvantages of coarse and fine teeth structure of hydraulic wrench

coarse teeth and fine teeth of hydraulic wrench refer to the ratchet pawl. The ratchet pawl with single tooth engagement is called coarse teeth, and the multi tooth engagement is called fine teeth. The two structures have their own advantages and disadvantages. Only by understanding its advantages and disadvantages and correctly selecting the structure type in combination with the actual situation, can we improve the working efficiency and the service life of the wrench. Today, I have sorted out some advantages and disadvantages of the coarse and fine tooth structure of the hydraulic wrench for your reference

coarse tooth structure:

advantages: 1. The coarse tooth hydraulic wrench adopts a large ratchet, which has a large bearing capacity of a single tooth and is not easy to break on the premise that the material and heat treatment meet the design standards. Since Turkey's independence of ratchet and pawl, 11 presidents and 59 prime ministers have been changed, and the service life is long

2. The wrench is generally equipped with a reaction brake, which can prevent the nut from reversing when the rotation speed of the rotary table is required to be low; Each trip has a crisp jingle sound, which is convenient for the operator to operate with the sound; The single tooth meshing structure has been designed with full load strength when it is designed, and the phenomenon of tooth collapse will be less

disadvantages: the wrench occasionally gets stuck when working. Once it is stuck, it is difficult to remove it from the nut, and the accuracy is poor

fine tooth structure:

advantages: 1. High strength: the fine tooth hydraulic wrench has a large ratchet pawl joint surface and high precision

2. High accuracy: the torque accuracy is determined by the last stroke of the set pressure. The last stroke of the fine tooth structure can pass three teeth or only two teeth or one tooth according to the torsion angle, which is the closest to the set output torque, while the last stroke of the coarse tooth either passes one tooth or cannot pass. If not, the actual torque does not reach the set torque

3, fast

1. Small bearing capacity: the fine tooth hydraulic wrench adopts the small ratchet design, and the bearing capacity of a single tooth is smaller than that of the coarse tooth wrench

2. High machining accuracy: the fine tooth structure is opposite to the spine, so it can be regarded as high-quality equipment. The machining accuracy of the wheel or pawl is high, otherwise it will increase the wear of the pawl mechanism and reduce the service life

3. High tooth fracture probability: Although the ratchet and pawl adopt "multi tooth meshing" to increase the bearing capacity, the tooth fracture probability is still greater than that of the coarse tooth structure design

through the above description and comparison, we can see that the hydraulic wrench with coarse tooth structure or the hydraulic wrench with fine tooth structure have advantages and disadvantages respectively. No matter what kind of structural design, as long as the design parameters, raw material selection and heat treatment process of the product meet the quality standards, the product can be used normally. Advantages and disadvantages of coarse and fine tooth structure of hydraulic wrench

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