The closest thing I could find to the datasheet for the SG5010 was the minimum specifications found on the website: **broken link removed**
SG5010 weight- 38g
Dimension 40.2x20.2x43.2mm
Stall torque 3.1kg/cm(4.8V); 4.5kg/cm(6V);
Operating speed 0.17sec/60degree(4.8v); 0.4sec/60degree(6v)
Operating voltage 4.8-6V
Temperature range 0℃_ 55℃
Dead band width 20us
I'm not really sure what more you would need. It's a standard, high torque servo with ball-bearings. A simple Google search "SG5010" should show you the insides if that's what you're after. Hope that helps, even a little bit!
-Omar
Hey guys I got one of these and searched for datasheet but I could`t found either, only Chinese: HES-288 datasheet(1/2 Pages) ETC | R/C Servo-Motor
I don`t know Chinese, but the image at the first page show that it operates from 0,7 ms to 2,3 ms