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Hot-sell 2S Low Profile Smart Servo

  • Monday, 24 January 2022
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SA19 and SA18 are the two best low-profile smart servos we sold this year. According to different usage and different speed and torque requirements, both the parameters and the internal structure of these two servos are distinctive. For example, SA19 is a brushless motor servo, but the SA18 is a coreless motor servo. For the spec, the SA18 servo can reach 0.11sec/60°& 18kg-cm at 8.4V, and the SSA19 servo can even reach 0.073sec/60°& 19kg-cm at 8.4V.  


Follow is briefly spec of the speed and torque, please check:

Spec of SA19

Operating speed

0.095sec/60°@ 6.0V

0.083sec/60°@ 7.4V

0.073sec/60°@ 8.4V


Stall Torque

16 kg-cm (222 oz-in) @ 6.0V

18 kg-cm (250 oz-in) @ 7.4V

19 kg-cm (264 oz-in) @ 8.4V


Spec of SA18

Operating speed

0.13sec/60°@ 6.0V

0.12sec/60°@ 7.4V

0.11sec/60°@ 8.4V


Stall Torque

13 kg-cm (181 oz-in) @ 6.0V

16 kg-cm (222 oz-in) @ 7.4V

18 kg-cm (250 oz-in) @ 8.4V


FAQ of the smart servo

Q1: When the servo is used as a winch servo, does it have the same torque and speed as the standard servo?

A: Yes, when it used as a winch servo, the speed and torque are the same, but the specified working voltage requirements are required to achieve the corresponding parameters.


Q2: How to change to winch servo mode? 

A: To change the winch servo mode, we need to use our programming card to achieve. Please also download our programming software and the corresponding servo firmware from our website in advance, then link the servo to the computer through the programming card, and select the mode you need to complete the mode change, then you will got a winch servo.

Our default shipping mode is to be used as a regular servo. You can note that change to winch mode before shipment if needed.


Any info please feel free to contact us.


Tags:rc drift servo upgrade | low profile rc servo | waterproof low profile rc servo | smart servo

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