Planetary Gearbox ratio | SMD Gearbox

1. PLANETARY GEARBOX RATIO PLANETARY GEARBOX :- In Planetary gearbox we can see how different gears works and moves together. It consist of a Sun Gear, Ring Gear and two or more planet Gears. The Planet Gears are mounted on a moving carrier which itself rotate relative to Sun Gear. The Ring Gears have fixed position in relation to the outside world Thus this gear system is named as Planetary gear Set because its looks similar to the Planetary Solar System. A planetary gearset uses spur gears that move opposite of each other within the same plane and are used as Speed Reducers. Planetary Gearbox are used when there is a Space or Weight constraint or where large amount of speed reduction or Torque is needed. In this type of Gearbox both Input and Output have same centre of Rotation this means that the centre of the input gear revolves around the centre of the output gear and the input and output shafts are aligned and the load is evenly distributed and the gears are more resistant to damage. ADVANTAGES OF PLANETARY GEARBOX :- 1)Coaxial arrangement of Input and Output. 2)Suitable for wide range of Applications. 3)High Efficiency. 4)Equal Load Distribution. 5)Favourable Volume output. 6) Flexible and Reliable power transmission. 7)Compact size and light weight. 8)High Accuracy. 9)Wide Ratio. 10) High Torque. APPLICATION OF PLANETARY GEARBOX :- CNC Machines Rotary Table Applications Material Handling Systems Industrial Conveyors Industrial Printing Pick and place system Linear Actuators Plasma Cutting System Positioning Tables Pumps Operation Gantry Robots Packaging Machine Machine Tools Feeding Machines Operating Table SMD GEARBOX

2. SELECTION OF PLANETARY GEARBOX :- The choice of Planetary Gearbox, its size and gearing ratio should be defined by the outcome. It is a careful balance between Size, Efficiency, Performance and Cost.While selection of gearbox there are few things which needs to be considered: 1)The Input Speed and delivery Torque of the Motor. 2)The output Shaft Size of the motor and motor mountings. 3)The Input Shaft size of the Gearbox and its corresponding gear mountings. 4)The Ratios needed for the Applications. 5)Operating Temperature. 6)Radical and Axial Load acting on the Gearbox Output Shaft. 7)Power Generated by Motor. 8)Place where the Gearbox is to be installed. CALCULATION OF PLANETARY GEARBOX :- ✓Number of Teeth : S + 2P = R S- No. of Teeth on Sun Gear, P – No. of Teeth on Planet Gear, R – No. of Teeth on Ring Gear. ✓To check if the Planetary Gears taken are possible or not, use below formulae. If the answer is a integer then the no. of planetary gears taken is correct. R-S/N = ? Where n = No. of Planet Gears. ✓Formula to Calculate the overall Ratio for Planetary Gearset. = Where Wr, Ws,Wp and Wc is the angular velocity of Ring, Sun, Planet and Carrier accordingly and Nr, Ns and Np is the number of teeth for ring, Sun and Planet. SMD GEARBOX

3. SMD PLANETARY GEARBOX :- SMD Gearbox is used for Various Applications such as Automation, Automobile, Pharmaceutical, Aerospace, Medical, Agriculture, machine tool etc. SMD Planetary Gearbox has a huge demand in Indian as well as overseas Market as they provide less Backlash than most of its Competitor. This gearbox is available in 2 Models i.e. Planetary Gearbox with Shaft Output( SNP Series) and Planetary Gearbox with Flange Output (SNDU Series) and is made available in various sizes such as SNP40, SNP60, SNP90, SNP120, SNP150 etc. This Planetary reducer consist of High torque capacity and low inertia and also can be used for Indexing purpose with high Accuracy. SMD Provides Reduction Ratio from 1:3 to 1:100 and any mounting modifications can be done. This Epicyclic Gearbox is self lubricated by silicon Grease and is also very easy to Install. SMD technocrats are in close contact with the customers to provide UpToDate solutions to the customers and suggest them a proper gearbox according to their requirement. (SMD Planetary gearbox with Shaft and Flange Output) SMD GEARBOX