Hi guys 
I need help in selecting this Dc motor cuz i can’t find the datasheet 
<Wholesale - High Torque Electric Motor 24V 600 RPM DC Gear Box Motor 25MM 2pcs>
Is this (600 RPM) speed at no load or at the given torque (8kg-cm) ?
Here is the link for the Motor
http://www.dhgate.com/product/high-torq … 3147131328
Almost guaranteed to be at no load.
Agree with MAC. 600 RPM with no load. The motor will stall when there is 8kg/cm torque. But will most likely stall well before that because no motor is perfect and neither are batteries.