Force Plus Force: Key Parameters and Usage Knowledge of Worm Gear Reducers

        Worm gear reducer For single-stage gearboxes with worm gears mounted below, the Archimedes cylindrical worm gear reducer is suitable for applications where the sliding velocity at the worm-gear meshing point does not exceed 7.5 m/s; the worm speed does not exceed 1500 r/min; the operating ambient temperature ranges from -40°C to +40°C; and the gearbox can operate in both forward and reverse directions.

　 　Main parameters of worm gear reducers

　　1) Module m of worm gear reducer For a transmission with E = 90°, the axial module Mx of the worm and the normal module Mt of the worm wheel are equal and both are denoted by M.

　　2) Worm gear pitch circle diameter d1 When using a hob to cut worm gears, in order to reduce the number of specifications required for the worm gear hob, the pitch diameter d1 of the worm is also standardized and must be matched with the module m.

　　3) Center distance a For standard cylindrical worm gear drives, the last digit of the center distance should be either 0 or 5. The center distance of reducers should be selected from the standard series values; for center distances greater than 500 mm, the preferred number series R20 may be used.

　　4) Gear ratio i The standard nominal values of the transmission ratio i for conventional cylindrical worm gear reducers—among which those marked with ① represent the basic transmission ratios and should be given priority in selection.

　　5) The displacement coefficient x2 of the worm wheel The primary purpose of modifying the geometry of a standard cylindrical worm gear drive is to adjust the center distance. Additionally, this modification can enhance the drive’s load-carrying capacity and efficiency, and eliminate root cutting in the worm wheel.

　　Worm gear reducers are ideal products for applications requiring speed reduction and transmission in food machinery, chemical machinery, woodworking machinery, pharmaceutical machinery, agricultural machinery, textile equipment, metallurgical equipment, medical machinery, and more.

　　1. The enclosure features an integral structure, boasting a beautiful and elegant appearance with excellent rigidity.

　　2. Box-type designs include the basic type (with the box body available in either vertical or horizontal structures equipped with base plates) and the specialized type (with the box body shaped like a rectangular parallelepiped, featuring fixed screw holes on multiple faces, and available in various configurations—some without base plates, while others come with separately installed base plates).

　　3. The input shaft connection methods include the basic type (single-input shaft and dual-input shaft) and a version with a motor flange.

　　4. The output shaft designs come in two types: basic type (single-output shaft, dual-output shaft) and hollow-output shaft.

　　5. The positions and orientations of the output and input shafts include: the input shaft can be positioned either below or above; the output shaft can point either upward or downward; and the input shaft can also point either upward or downward.

　　6. Two or three reducers can be combined to form a multi-stage reducer, achieving an extremely high transmission ratio.

　　 Precautions for using worm gear reducers:

　　1. Before using the worm gear reducer, check whether the reducer’s structural form, center distance, transmission ratio, input shaft connection method, output shaft structure, and the directions of the input and output shafts are all correct. The input speed of the worm gear shall be ≤1500 r/min.

　　2. When using, replace the reducer’s sealing plug with the vent plug provided with the reducer.

　　3. Before use, you must check the oil level either through the oil-level sight hole or by opening the oil plug.

　　4. When using, apply the load gradually; do not start under full load.

　　5. The standard operating temperature range for the gearbox is maintained between -5°C and 40°C.

　　6. Avoid exposing the gearbox to sunlight or harsh environmental conditions.

　　7. Ensure good ventilation near the motor fan to avoid hindering heat dissipation.

　　8. If the gearbox has been stored for more than four months, check whether the oil seals are immersed in lubricating oil and whether the oil seals still retain their elasticity.