During the assembly of a worm gear reducer, the question arises as to whether to install the worm wheel or the worm first.

　　During the assembly of a worm gear reducer, there is no universally fixed sequence for installing the worm wheel and the worm. The specific assembly steps may vary depending on the reducer’s model, design, and manufacturing process. However, as a general guideline, the following basic principles and recommendations can be followed:

　　Assembly Principles

　　Preparation work

　　Cleaning and Inspection: Ensure all components are free of dust, oil, and other contaminants, and inspect the turbine, worm gear, bearings, and other parts for damage or wear.

　　Tool preparation: Gather the necessary assembly tools, such as wrenches, screwdrivers, hammers, circlip pliers, and others.

　　Bearing installation

　　Bearing positioning: First, install the bearings at both ends of the turbine and worm gear. Use appropriate tools to position the bearings in their designated locations, ensuring secure and accurate installation and alignment.

　　Check bearing clearance: Ensure that, after installation, the bearing rotates smoothly without abnormal noise, and verify that the bearing clearance meets the specified requirements.

　　Turbine installation

　　Installing the Turbine: After the bearing has been installed, place the turbine into the lower housing, paying careful attention to its orientation and position to ensure it is correctly aligned and securely mounted.

　　Fixed Turbine: The turbine is secured in place using bolts or other fasteners to ensure it remains stationary during operation.

　　Worm Gear Installation

　　Worm Gear Positioning: After the turbine has been installed, carefully insert the worm gear into the worm gear bore, taking care not to apply excessive force to avoid scratching the worm gear or damaging other components.

　　Adjustment of meshing: Adjust the backlash between the worm and the worm wheel to ensure smooth engagement and efficient power transmission.

　　Fixed Worm Gear: Use fasteners to secure the worm gear in place, ensuring its stability during operation.

　　Precautions

　　Fit Accuracy: Throughout the assembly process, pay particular attention to the fit accuracy of the turbine and worm gear to ensure smooth meshing and reliable power transmission.

　　Lubrication: Apply an appropriate grease to the bearings and the worm‑gear meshing areas to reduce wear and noise and improve transmission efficiency.

　　Sealing: When installing the worm gear’s bearings and oil seals, ensure that they provide effective sealing to prevent lubricant leakage.

　　During installation, particular attention should be paid to the mating accuracy of the turbine and worm gear to ensure smooth meshing and efficient power transmission.

　　Lubricate with an appropriate grease to reduce wear and noise and improve transmission efficiency.

　　When installing the worm gear’s bearings and oil seals, ensure that they provide a reliable seal to prevent lubricant leakage.