About DC motor

I am trying to make a robotic arm. Following link will provide the motor details:

http://www.phidgets.com/products.php?category=38&product_id=3268E_0

My question is about rated torque and stall torque. The torque I need is somewhere around 50 kg.cm which lies in between of the rated torque and stall torque.

I wanted to use this motor along with arduino uno and arduino motor shield R3.

https://www.arduino.cc/en/Main/ArduinoMotorShieldR3

I am confused whether it will be safe to use the motor given that the required torque is more than the rated torque..?

I am confused whether it will be safe to use the motor given that the required torque is more than the rated torque..?

Don't be confused if it needs torque greater than the rated torque then the motor is not powerful enough. The stall torque has nothing to do with it.