42CrMo alloy steel gear sleeve 170 specification high-strength wear-resistant transmission connector

Description :

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Gear sleeve is a key fastener used in mechanical transmission systems to connect shafts with hubs or gears, mainly solving the problems of torque transmission and axial fixation during power transmission. The 170-42Crmo model gear sleeve is designed for high load conditions and is suitable for heavy machinery, mining equipment, and large transmission devices. Its core function is to achieve seamless fit through internal or external spline structures, ensuring efficient power transmission while bearing large radial and axial loads, preventing loose or detached connecting components, and ensuring the stability of equipment operation.

  The gear sleeve is made of high-quality 42CrMo alloy structural steel, which has undergone quenching and tempering treatment and surface high-frequency quenching process. The hardness can reach HRC50-55, and it has extremely high strength and toughness. The execution standard refers to the relevant mechanical component specifications in GB/T, and the dimensional accuracy meets the requirements of IT7-IT8 levels. The 170 specification refers to a key matching diameter or outer diameter size of 170mm, and the specific internal hole key parameters need to be determined based on the matching shaft system. The addition of chromium and molybdenum elements in the chemical composition of the material significantly improves its fatigue resistance and wear resistance, ensuring that it is not easily deformed or fractured under long-term alternating loads, meeting industrial durability standards.

  When selecting, it is necessary to focus on checking parameters such as shaft diameter, spline modulus, number of teeth, and pressure angle to ensure complete matching with the mating parts. The 170-42Crmo gear sleeve is suitable for applications that require high-strength connections, such as connecting the main drive shaft of crushers, ball mills, winches, and other equipment. Not suitable for precision instrument transmission with low load, low speed, or extremely strict noise control. If there is a strong impact or corrosive environment in the working condition, it is recommended to further confirm the surface treatment process or choose stainless steel material alternatives. Ordinary carbon steel gear sleeves are prone to corrosion or early failure in such environments, which affects transmission accuracy.

  Before installation, it is necessary to thoroughly clean the shaft surface and the inner hole of the gear sleeve, apply an appropriate amount of lubricating grease to reduce assembly resistance and prevent micro motion wear. When installing using hot installation or hydraulic pressing, it is necessary to strictly control the heating temperature or pressing speed to avoid damaging the spline tooth surface. During daily maintenance, it is necessary to regularly check the connection parts for looseness, abnormal noise, or oil leakage. If pitting or peeling of the tooth surface is found, it should be replaced in a timely manner. The typical service life depends on the load size and lubrication condition. It is generally recommended to conduct a comprehensive inspection every 2000-3000 hours of operation to ensure the safety and reliability of the transmission system and avoid major equipment accidents caused by fastener failure.

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