An animation demonstrating the working principle of a wobble pump.
Wobble Pump Animation 00:15
The internal working mechanism contains a single joint as opposed to two, causing the stator to wobble, where as in a typical progressing cavity pump the stator is fixed and only the rotor rotates in a smooth 360° motion.
This pump is from our RL Series: https://www.northridgepumps.com/p_1403_nova-rotors-rl-wobble-progressive-cavity-pump