Choosing the Best Gearbox for your Servo Motor | Gearbox manufacturer in delhi

Servo gearboxes differ from the standard industrial gearboxes in that they are designed to operate with higher peak input speeds together with a wide operating range. Other factors such as low inertia, backlash and the exact numeric ratios can also be important. A common choice to be paired up with the servo motors is the planetary design which has compact dimensions and high performance. However planetary is not the only option and other factors such as the mounting arrangement can lead to selection of alternatives. These key decision factors here are the required torques, gear ratio, level of backlash that is acceptable and the mounting configuration. Precimotion is a leader of gearbox manufacturers in delhi by providing enhanced services, relationship and profitability. We provide quality machinery services & products such as servo planetary gearboxes, engineering solutions and many more that exceed the expectations of our esteemed customers. Gearbox manufacturer in delhi

Many machine designers look for the servo gearboxes with low backlash. Generally the catalogue values for backlash are listed for a torque of 2% of the rated value measured in arcmins at the output shaft. Zero backlash is not a practical option as the lack of clearance leads to the elevated running temperatures, but figures as low as 1 arcmin are possible. This is only 1/60th of a degree. More commonly low backlash gearboxes are widely available at 3 to 5 arcmins.

Of course low backlash comes with a cost. Not only does purchase cost rise, but noise levels can also be higher. Gearboxes will run hotter and higher temperatures will degrade the lubricant in the long term so reducing the lifetime. Therefore the low backlash should be specified where it is needed for reversing drives where positioning accuracy is needed. Drives that always run in one direction can operate with medium backlash gearboxes unless the external forces can cause movement away from the stopped position.

Servo gearboxes are designed for the cyclic duties and the profile of the cycle plus the frequency will influence the selected size of the gearbox. For example there will be the catalogue values for acceleration torque, rated torque and emergency stop torque. The acceleration torque required is simple to calculate and must be below the catalogue limit, if necessary with the factors applied for high frequency of operation and high ambient temperature. The rated torque is the limit for the average required for torque over a period of time. The emergency stop torque is a limiting value that applies for 1000 stops over the life of the gearboxes.

Different types of servo gearboxes offer a choice of mounting configurations. Where there is a male shaft, this can have a key and the keyway but is often supplied without a keyway. Slight backlash is virtually impossible to avoid in keyways which can lead to the fretting wear on highly dynamic drives. Therefore a plain shaft to be fitted with a friction locking bush is often preferred. Similarly hollow shafts can be supplied with or without the keyways. Where the option without keyway is chosen, the hollow shaft is extended to the one side beyond the gearbox casing and a shrink disc type of locking assembly makes the connection.