The difference between single support and double support of planetary reducer

1. structural difference

   The single support punches three pin holes on the planet carrier, puts three pins, and then fixes the gear on the pins. One side of the gear is the planet carrier, the other side is suspended, and a block is placed behind to separate it.The double-supported planetary carrier passes throughCNC

   
   

   Make sure that the pin holes on the upper and lower sides are completely concentric(Otherwise, the gears will not mesh with the gears.), and then put in the gear, and finally fix it with pins. Both sides of the gear are supported by the planet carrier.

2. Force difference

   The single-support structure means that only one side of the gear on the planet carrier is stressed.

   The double support structure is that the gears on the planet carrier are stressed on both sides.

3. The difference in performance

The single-supported gear will be biased in the opposite direction of the output shaft transmission, and the friction coefficient between the planetary gear and the planetary ring gear will increase. As a result, the noise of the planetary reducer will increase, the efficiency will decrease, the temperature will increase, and even serious can cause oil leakage.

In addition, the planetary reducer is mainly used to cooperate with the servo motor, and the servo motor is characterized by small size, high precision, and frequent forward and reverse use. The gear pins on the planet carrier of the planetary reducer are prone to rigid deformation, so the clearance of the single-support planetary reducer will become larger

The double support structure of the planetary reducer will not, because both sides of the gear are supported by the planetary frame, so the gear will not be biased to one side when the reducer is driven, and the gear pin will not be rigidly deformed.

4. The difference in cost

The double support structure of the planetary reducer first uses the middle of the planet carrierCNCMake a pocket, and then drill holes in the upper machining center. It is also necessary to ensure that the pin holes on the upper and lower sides are completely concentric. If the pin holes on the two sides are deviated, the entire planetary carrier will be scrapped.Therefore, the processing cost of the double support structure of the planetary reducer is about 20% more than that of the single support structure of the planetary reducer.

The internal structure diagram of the planetary reducer includes: planetary carrier, planetary gear, sun gear, ring gear and other parts.

Planetary reducerDouble support, both sides of the gear are supported by the planet carrier,The planetary reducer with double support structure uniformly adopts double support independent立The planetary bracket not only ensures stability but also ensures high precision, ensuring stable and reliable quality.Independent one-piece planetary carrier, double support structure, fully cast two-stage combination, coaxial square flange output, low backlash, precise positioning, good rigidity, large bearing capacity, low noise, long life, light and small size, Beautiful appearance, easy installation, etc. The connection between the input end and the motor adopts a collet-type locking mechanism and undergoes dynamic balance analysis to ensure concentric power transmission at the joint interface at high input speeds.